diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index 3b267c1b1693d..01323bba79d8d 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -9423,12 +9423,9 @@ AssignConvertType Sema::CheckAssignmentConstraints(QualType LHSType,
       // vectors, the total size only needs to be the same. This is a bitcast;
       // no bits are changed but the result type is different.
       if (isLaxVectorConversion(RHSType, LHSType)) {
-        // The default for lax vector conversions with Altivec vectors will
-        // change, so if we are converting between vector types where
-        // at least one is an Altivec vector, emit a warning.
-        if (Context.getTargetInfo().getTriple().isPPC() &&
-            anyAltivecTypes(RHSType, LHSType) &&
-            !Context.areCompatibleVectorTypes(RHSType, LHSType))
+        // The default for lax vector conversions will
+        // change, so if we are converting between vector emit a warning.
+        if (!Context.areCompatibleVectorTypes(RHSType, LHSType))
           Diag(RHS.get()->getExprLoc(), diag::warn_deprecated_lax_vec_conv_all)
               << RHSType << LHSType;
         Kind = CK_BitCast;
@@ -9444,12 +9441,8 @@ AssignConvertType Sema::CheckAssignmentConstraints(QualType LHSType,
       const VectorType *VecType = RHSType->getAs<VectorType>();
       if (VecType && VecType->getNumElements() == 1 &&
           isLaxVectorConversion(RHSType, LHSType)) {
-        if (Context.getTargetInfo().getTriple().isPPC() &&
-            (VecType->getVectorKind() == VectorKind::AltiVecVector ||
-             VecType->getVectorKind() == VectorKind::AltiVecBool ||
-             VecType->getVectorKind() == VectorKind::AltiVecPixel))
-          Diag(RHS.get()->getExprLoc(), diag::warn_deprecated_lax_vec_conv_all)
-              << RHSType << LHSType;
+        Diag(RHS.get()->getExprLoc(), diag::warn_deprecated_lax_vec_conv_all)
+            << RHSType << LHSType;
         ExprResult *VecExpr = &RHS;
         *VecExpr = ImpCastExprToType(VecExpr->get(), LHSType, CK_BitCast);
         Kind = CK_BitCast;
@@ -10526,8 +10519,7 @@ QualType Sema::CheckVectorOperands(ExprResult &LHS, ExprResult &RHS,
   QualType OtherType = LHSVecType ? RHSType : LHSType;
   ExprResult *OtherExpr = LHSVecType ? &RHS : &LHS;
   if (isLaxVectorConversion(OtherType, VecType)) {
-    if (Context.getTargetInfo().getTriple().isPPC() &&
-        anyAltivecTypes(RHSType, LHSType) &&
+    if (!OtherType->isVectorType() ||
         !Context.areCompatibleVectorTypes(RHSType, LHSType))
       Diag(Loc, diag::warn_deprecated_lax_vec_conv_all) << RHSType << LHSType;
     // If we're allowing lax vector conversions, only the total (data) size
diff --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp
index ea5c4265d736d..8493f45a2a783 100644
--- a/clang/lib/Sema/SemaOverload.cpp
+++ b/clang/lib/Sema/SemaOverload.cpp
@@ -2216,9 +2216,8 @@ static bool IsVectorConversion(Sema &S, QualType FromType, QualType ToType,
     if (S.Context.areCompatibleVectorTypes(FromType, ToType) ||
         (S.isLaxVectorConversion(FromType, ToType) &&
          !ToType->hasAttr(attr::ArmMveStrictPolymorphism))) {
-      if (S.getASTContext().getTargetInfo().getTriple().isPPC() &&
-          S.isLaxVectorConversion(FromType, ToType) &&
-          S.anyAltivecTypes(FromType, ToType) &&
+      if (S.isLaxVectorConversion(FromType, ToType) &&
+
           !S.Context.areCompatibleVectorTypes(FromType, ToType) &&
           !InOverloadResolution && !CStyle) {
         S.Diag(From->getBeginLoc(), diag::warn_deprecated_lax_vec_conv_all)
diff --git a/clang/test/AST/ByteCode/builtin-bit-cast.cpp b/clang/test/AST/ByteCode/builtin-bit-cast.cpp
index c1d29b2ca4c00..a7c646e5d1864 100644
--- a/clang/test/AST/ByteCode/builtin-bit-cast.cpp
+++ b/clang/test/AST/ByteCode/builtin-bit-cast.cpp
@@ -1,12 +1,12 @@
-// RUN: %clang_cc1 -verify=ref,both -std=c++2a -fsyntax-only %s
-// RUN: %clang_cc1 -verify=ref,both -std=c++2a -fsyntax-only -triple aarch64_be-linux-gnu %s
-// RUN: %clang_cc1 -verify=ref,both -std=c++2a -fsyntax-only -triple powerpc64le-unknown-unknown -mabi=ieeelongdouble %s
-// RUN: %clang_cc1 -verify=ref,both -std=c++2a -fsyntax-only -triple powerpc64-unknown-unknown -mabi=ieeelongdouble %s
-
-// RUN: %clang_cc1 -verify=expected,both -std=c++2a -fsyntax-only -fexperimental-new-constant-interpreter %s
-// RUN: %clang_cc1 -verify=expected,both -std=c++2a -fsyntax-only -triple aarch64_be-linux-gnu -fexperimental-new-constant-interpreter %s
-// RUN: %clang_cc1 -verify=expected,both -std=c++2a -fsyntax-only -fexperimental-new-constant-interpreter -triple powerpc64le-unknown-unknown -mabi=ieeelongdouble %s
-// RUN: %clang_cc1 -verify=expected,both -std=c++2a -fsyntax-only -fexperimental-new-constant-interpreter -triple powerpc64-unknown-unknown -mabi=ieeelongdouble %s
+// RUN: %clang_cc1 -verify=ref,both -std=c++2a -fsyntax-only -Wno-deprecate-lax-vec-conv-all %s
+// RUN: %clang_cc1 -verify=ref,both -std=c++2a -fsyntax-only -triple aarch64_be-linux-gnu -Wno-deprecate-lax-vec-conv-all %s
+// RUN: %clang_cc1 -verify=ref,both -std=c++2a -fsyntax-only -triple powerpc64le-unknown-unknown -mabi=ieeelongdouble -Wno-deprecate-lax-vec-conv-all %s
+// RUN: %clang_cc1 -verify=ref,both -std=c++2a -fsyntax-only -triple powerpc64-unknown-unknown -mabi=ieeelongdouble -Wno-deprecate-lax-vec-conv-all %s
+
+// RUN: %clang_cc1 -verify=expected,both -std=c++2a -fsyntax-only -fexperimental-new-constant-interpreter -Wno-deprecate-lax-vec-conv-all %s
+// RUN: %clang_cc1 -verify=expected,both -std=c++2a -fsyntax-only -triple aarch64_be-linux-gnu -fexperimental-new-constant-interpreter -Wno-deprecate-lax-vec-conv-all %s
+// RUN: %clang_cc1 -verify=expected,both -std=c++2a -fsyntax-only -fexperimental-new-constant-interpreter -triple powerpc64le-unknown-unknown -mabi=ieeelongdouble -Wno-deprecate-lax-vec-conv-all %s
+// RUN: %clang_cc1 -verify=expected,both -std=c++2a -fsyntax-only -fexperimental-new-constant-interpreter -triple powerpc64-unknown-unknown -mabi=ieeelongdouble -Wno-deprecate-lax-vec-conv-all %s
 
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 #  define LITTLE_END 1
diff --git a/clang/test/CodeGen/AArch64/fp8-intrinsics/acle_neon_fp8_untyped.c b/clang/test/CodeGen/AArch64/fp8-intrinsics/acle_neon_fp8_untyped.c
index fdc861836baf7..b7eb951edb7eb 100644
--- a/clang/test/CodeGen/AArch64/fp8-intrinsics/acle_neon_fp8_untyped.c
+++ b/clang/test/CodeGen/AArch64/fp8-intrinsics/acle_neon_fp8_untyped.c
@@ -1,7 +1,7 @@
 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5
 #include <arm_neon.h>
 
-// RUN: %clang_cc1  -triple aarch64-none-linux-gnu -target-feature +neon -target-feature +lut -disable-O0-optnone -Werror -Wall -emit-llvm -o - %s | opt -S -p mem2reg,sroa | FileCheck %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all  -triple aarch64-none-linux-gnu -target-feature +neon -target-feature +lut -disable-O0-optnone -Werror -Wall -emit-llvm -o - %s | opt -S -p mem2reg,sroa | FileCheck %s
 
 // REQUIRES: aarch64-registered-target
 
diff --git a/clang/test/CodeGen/AArch64/sve-acle-__ARM_FEATURE_SVE_VECTOR_OPERATORS.c b/clang/test/CodeGen/AArch64/sve-acle-__ARM_FEATURE_SVE_VECTOR_OPERATORS.c
index 4a1185d02981b..4c1a55b8d04ac 100644
--- a/clang/test/CodeGen/AArch64/sve-acle-__ARM_FEATURE_SVE_VECTOR_OPERATORS.c
+++ b/clang/test/CodeGen/AArch64/sve-acle-__ARM_FEATURE_SVE_VECTOR_OPERATORS.c
@@ -1,8 +1,8 @@
-// RUN: %clang_cc1 -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=1 -mvscale-max=1 | FileCheck %s -D#VBITS=128 --check-prefixes=CHECK128
-// RUN: %clang_cc1 -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=2 -mvscale-max=2 | FileCheck %s -D#VBITS=256 --check-prefixes=CHECK,CHECK256
-// RUN: %clang_cc1 -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=4 -mvscale-max=4 | FileCheck %s -D#VBITS=512 --check-prefixes=CHECK,CHECK512
-// RUN: %clang_cc1 -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=8 -mvscale-max=8 | FileCheck %s -D#VBITS=1024 --check-prefixes=CHECK,CHECK1024
-// RUN: %clang_cc1 -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=16 -mvscale-max=16 | FileCheck %s -D#VBITS=2048 --check-prefixes=CHECK,CHECK2048
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=1 -mvscale-max=1 | FileCheck %s -D#VBITS=128 --check-prefixes=CHECK128
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=2 -mvscale-max=2 | FileCheck %s -D#VBITS=256 --check-prefixes=CHECK,CHECK256
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=4 -mvscale-max=4 | FileCheck %s -D#VBITS=512 --check-prefixes=CHECK,CHECK512
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=8 -mvscale-max=8 | FileCheck %s -D#VBITS=1024 --check-prefixes=CHECK,CHECK1024
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=16 -mvscale-max=16 | FileCheck %s -D#VBITS=2048 --check-prefixes=CHECK,CHECK2048
 
 // REQUIRES: aarch64-registered-target
 
diff --git a/clang/test/CodeGen/AArch64/sve-acle-__ARM_FEATURE_SVE_VECTOR_OPERATORS.cpp b/clang/test/CodeGen/AArch64/sve-acle-__ARM_FEATURE_SVE_VECTOR_OPERATORS.cpp
index 6211b609d6d28..c67b8955d36be 100644
--- a/clang/test/CodeGen/AArch64/sve-acle-__ARM_FEATURE_SVE_VECTOR_OPERATORS.cpp
+++ b/clang/test/CodeGen/AArch64/sve-acle-__ARM_FEATURE_SVE_VECTOR_OPERATORS.cpp
@@ -1,8 +1,8 @@
-// RUN: %clang_cc1 -x c++ -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=1 -mvscale-max=1 | FileCheck %s -D#VBITS=128 --check-prefixes=CHECK,CHECK128
-// RUN: %clang_cc1 -x c++ -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=2 -mvscale-max=2 | FileCheck %s -D#VBITS=256 --check-prefixes=CHECK,CHECKWIDE
-// RUN: %clang_cc1 -x c++ -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=4 -mvscale-max=4 | FileCheck %s -D#VBITS=512 --check-prefixes=CHECK,CHECKWIDE
-// RUN: %clang_cc1 -x c++ -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=8 -mvscale-max=8 | FileCheck %s -D#VBITS=1024 --check-prefixes=CHECK,CHECKWIDE
-// RUN: %clang_cc1 -x c++ -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=16 -mvscale-max=16 | FileCheck %s -D#VBITS=2048 --check-prefixes=CHECK,CHECKWIDE
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -x c++ -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=1 -mvscale-max=1 | FileCheck %s -D#VBITS=128 --check-prefixes=CHECK,CHECK128
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -x c++ -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=2 -mvscale-max=2 | FileCheck %s -D#VBITS=256 --check-prefixes=CHECK,CHECKWIDE
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -x c++ -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=4 -mvscale-max=4 | FileCheck %s -D#VBITS=512 --check-prefixes=CHECK,CHECKWIDE
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -x c++ -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=8 -mvscale-max=8 | FileCheck %s -D#VBITS=1024 --check-prefixes=CHECK,CHECKWIDE
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -x c++ -triple aarch64 -target-feature +sve -O1 -Werror -Wall -emit-llvm -o - %s -mvscale-min=16 -mvscale-max=16 | FileCheck %s -D#VBITS=2048 --check-prefixes=CHECK,CHECKWIDE
 
 // REQUIRES: aarch64-registered-target
 
diff --git a/clang/test/CodeGen/AArch64/targetattr-crypto.c b/clang/test/CodeGen/AArch64/targetattr-crypto.c
index 006a394be7775..f3183a6ba04d7 100644
--- a/clang/test/CodeGen/AArch64/targetattr-crypto.c
+++ b/clang/test/CodeGen/AArch64/targetattr-crypto.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple aarch64 -target-feature +v8a -verify -S %s -o -
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64 -target-feature +v8a -verify -S %s -o -
 // REQUIRES: aarch64-registered-target
 
 #include <arm_neon.h>
diff --git a/clang/test/CodeGen/LoongArch/lasx/builtin-alias-error.c b/clang/test/CodeGen/LoongArch/lasx/builtin-alias-error.c
index 2a3862bbe3c18..99145124ac74e 100644
--- a/clang/test/CodeGen/LoongArch/lasx/builtin-alias-error.c
+++ b/clang/test/CodeGen/LoongArch/lasx/builtin-alias-error.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple loongarch64 -target-feature +lasx -verify %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple loongarch64 -target-feature +lasx -verify %s
 
 #include <lasxintrin.h>
 
diff --git a/clang/test/CodeGen/LoongArch/lasx/builtin-error.c b/clang/test/CodeGen/LoongArch/lasx/builtin-error.c
index dabf34368ea3e..e484a69825072 100644
--- a/clang/test/CodeGen/LoongArch/lasx/builtin-error.c
+++ b/clang/test/CodeGen/LoongArch/lasx/builtin-error.c
@@ -1,5 +1,5 @@
-// RUN: %clang_cc1 -triple loongarch64 -target-feature +lasx -verify %s
-// RUN: not %clang_cc1 -triple loongarch64 -DFEATURE_CHECK -emit-llvm %s -o /dev/null 2>&1 \
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple loongarch64 -target-feature +lasx -verify %s
+// RUN: not %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple loongarch64 -DFEATURE_CHECK -emit-llvm %s -o /dev/null 2>&1 \
 // RUN:   | FileCheck %s
 
 typedef signed char v32i8 __attribute__((vector_size(32), aligned(32)));
diff --git a/clang/test/CodeGen/LoongArch/lsx/builtin-alias-error.c b/clang/test/CodeGen/LoongArch/lsx/builtin-alias-error.c
index 69cf2254fdd79..3590535a685db 100644
--- a/clang/test/CodeGen/LoongArch/lsx/builtin-alias-error.c
+++ b/clang/test/CodeGen/LoongArch/lsx/builtin-alias-error.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple loongarch64 -target-feature +lsx -verify %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple loongarch64 -target-feature +lsx -verify %s
 
 #include <lsxintrin.h>
 
diff --git a/clang/test/CodeGen/LoongArch/lsx/builtin-error.c b/clang/test/CodeGen/LoongArch/lsx/builtin-error.c
index 722ba7fe8cd20..1bdb225b97ebe 100644
--- a/clang/test/CodeGen/LoongArch/lsx/builtin-error.c
+++ b/clang/test/CodeGen/LoongArch/lsx/builtin-error.c
@@ -1,5 +1,5 @@
-// RUN: %clang_cc1 -triple loongarch64 -target-feature +lsx -verify %s
-// RUN: not %clang_cc1 -triple loongarch64 -DFEATURE_CHECK -emit-llvm %s -o /dev/null 2>&1 \
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple loongarch64 -target-feature +lsx -verify %s
+// RUN: not %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple loongarch64 -DFEATURE_CHECK -emit-llvm %s -o /dev/null 2>&1 \
 // RUN:   | FileCheck %s
 
 typedef signed char v16i8 __attribute__((vector_size(16), aligned(16)));
diff --git a/clang/test/CodeGen/SystemZ/zvector.c b/clang/test/CodeGen/SystemZ/zvector.c
index a0b654d9acc9a..78d1e1ff169fb 100644
--- a/clang/test/CodeGen/SystemZ/zvector.c
+++ b/clang/test/CodeGen/SystemZ/zvector.c
@@ -1,5 +1,5 @@
 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5
-// RUN: %clang_cc1 -triple s390x-linux-gnu -target-cpu z13 -fzvector \
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple s390x-linux-gnu -target-cpu z13 -fzvector \
 // RUN: -emit-llvm -o - -W -Wall -Werror \
 // RUN: %s | opt -S -passes=mem2reg | FileCheck %s
 
diff --git a/clang/test/CodeGen/SystemZ/zvector2.c b/clang/test/CodeGen/SystemZ/zvector2.c
index f00fcdd52c401..a9b9616c650ab 100644
--- a/clang/test/CodeGen/SystemZ/zvector2.c
+++ b/clang/test/CodeGen/SystemZ/zvector2.c
@@ -1,5 +1,5 @@
 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 6
-// RUN: %clang_cc1 -triple s390x-linux-gnu -target-cpu z14 -fzvector \
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple s390x-linux-gnu -target-cpu z14 -fzvector \
 // RUN:  -O -emit-llvm -o - -W -Wall -Werror %s | FileCheck %s
 
 volatile vector float ff, ff2;
diff --git a/clang/test/CodeGen/builtins-mips-msa-error.c b/clang/test/CodeGen/builtins-mips-msa-error.c
index 11ddb08d9f4e9..4feef67720f81 100644
--- a/clang/test/CodeGen/builtins-mips-msa-error.c
+++ b/clang/test/CodeGen/builtins-mips-msa-error.c
@@ -1,5 +1,5 @@
 // REQUIRES: mips-registered-target
-// RUN: %clang_cc1 -triple mips-unknown-linux-gnu -fsyntax-only %s \
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple mips-unknown-linux-gnu -fsyntax-only %s \
 // RUN:            -target-feature +msa -target-feature +fp64 \
 // RUN:            -verify -mfloat-abi hard -o - 2>&1
 
diff --git a/clang/test/CodeGen/target-builtin-error-3.c b/clang/test/CodeGen/target-builtin-error-3.c
index 056dc940f7a93..aa89ab989308e 100644
--- a/clang/test/CodeGen/target-builtin-error-3.c
+++ b/clang/test/CodeGen/target-builtin-error-3.c
@@ -1,6 +1,6 @@
-// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin -S -verify -o - -target-feature +avx
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all %s -triple=x86_64-apple-darwin -S -verify -o - -target-feature +avx
 
-// RUN: not %clang_cc1 %s -triple=x86_64-apple-darwin -emit-obj -target-feature +avx 2> %t.err
+// RUN: not %clang_cc1 -Wno-deprecate-lax-vec-conv-all %s -triple=x86_64-apple-darwin -emit-obj -target-feature +avx 2> %t.err
 // RUN: FileCheck < %t.err %s
 // CHECK: 1 error generated
 
diff --git a/clang/test/CodeGen/vector.c b/clang/test/CodeGen/vector.c
index 5d677aaf16948..327fe447b0e15 100644
--- a/clang/test/CodeGen/vector.c
+++ b/clang/test/CodeGen/vector.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -ffreestanding -triple i386-apple-darwin9 -O1 -target-cpu corei7 -debug-info-kind=limited -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -ffreestanding -triple i386-apple-darwin9 -O1 -target-cpu corei7 -debug-info-kind=limited -emit-llvm %s -o - | FileCheck %s
 typedef short __v4hi __attribute__ ((__vector_size__ (8)));
 
 void test1(void) {
diff --git a/clang/test/Sema/aarch64-neon-target.c b/clang/test/Sema/aarch64-neon-target.c
index 07d763ec84bd1..95037081930ea 100644
--- a/clang/test/Sema/aarch64-neon-target.c
+++ b/clang/test/Sema/aarch64-neon-target.c
@@ -1,5 +1,5 @@
-// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +neon -verify -emit-llvm -o - %s
-// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +neon -target-feature +outline-atomics -verify -emit-llvm -o - %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64-none-linux-gnu -target-feature +neon -verify -emit-llvm -o - %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64-none-linux-gnu -target-feature +neon -target-feature +outline-atomics -verify -emit-llvm -o - %s
 // REQUIRES: aarch64-registered-target
 
 // Test that functions with the correct target attributes can use the correct NEON intrinsics.
diff --git a/clang/test/Sema/aarch64-neon-without-target-feature.cpp b/clang/test/Sema/aarch64-neon-without-target-feature.cpp
index 0831eb7c754a7..b923e8f34fe7c 100644
--- a/clang/test/Sema/aarch64-neon-without-target-feature.cpp
+++ b/clang/test/Sema/aarch64-neon-without-target-feature.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +dotprod  -target-feature +fullfp16 -target-feature +fp16fml -target-feature +i8mm -target-feature +bf16 -verify -emit-llvm -o - %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64-none-linux-gnu -target-feature +dotprod  -target-feature +fullfp16 -target-feature +fp16fml -target-feature +i8mm -target-feature +bf16 -verify -emit-llvm -o - %s
 
 // REQUIRES: aarch64-registered-target
 
diff --git a/clang/test/Sema/arm-bfloat.cpp b/clang/test/Sema/arm-bfloat.cpp
index 6a3eacd331d5c..8d1af142e3a71 100644
--- a/clang/test/Sema/arm-bfloat.cpp
+++ b/clang/test/Sema/arm-bfloat.cpp
@@ -1,12 +1,12 @@
-// RUN: %clang_cc1 -fsyntax-only -verify=scalar,neon -std=c++11 \
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -fsyntax-only -verify=scalar,neon -std=c++11 \
 // RUN:   -triple aarch64 -target-cpu cortex-a75 \
 // RUN:   -target-feature +bf16 -target-feature +neon -Wno-unused %s
-// RUN: %clang_cc1 -fsyntax-only -verify=scalar,neon -std=c++11 \
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -fsyntax-only -verify=scalar,neon -std=c++11 \
 // RUN:   -triple arm-arm-none-eabi -target-cpu cortex-a53 \
 // RUN:   -target-feature +bf16 -target-feature +neon -Wno-unused %s
 
 // The types should be available under AArch64 even without the bf16 feature
-// RUN: %clang_cc1 -fsyntax-only -verify=scalar -DNONEON -std=c++11 \
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -fsyntax-only -verify=scalar -DNONEON -std=c++11 \
 // RUN:   -triple aarch64 -target-cpu cortex-a75 \
 // RUN:   -target-feature -bf16 -target-feature +neon -Wno-unused %s
 
diff --git a/clang/test/Sema/arm-cde-immediates.c b/clang/test/Sema/arm-cde-immediates.c
index 78962478ac440..540d6d5f43dff 100644
--- a/clang/test/Sema/arm-cde-immediates.c
+++ b/clang/test/Sema/arm-cde-immediates.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple thumbv8.1m.main-none-none-eabi -target-feature +mve.fp -target-feature +cdecp0 -verify -fsyntax-only %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple thumbv8.1m.main-none-none-eabi -target-feature +mve.fp -target-feature +cdecp0 -verify -fsyntax-only %s
 
 // REQUIRES: aarch64-registered-target || arm-registered-target
 
diff --git a/clang/test/Sema/arm-mve-immediates.c b/clang/test/Sema/arm-mve-immediates.c
index db909a0aa8b0c..25368ed8c1e05 100644
--- a/clang/test/Sema/arm-mve-immediates.c
+++ b/clang/test/Sema/arm-mve-immediates.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple thumbv8.1m.main-none-none-eabi -target-feature +mve.fp -verify -fsyntax-only %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple thumbv8.1m.main-none-none-eabi -target-feature +mve.fp -verify -fsyntax-only %s
 
 // REQUIRES: aarch64-registered-target || arm-registered-target
 
diff --git a/clang/test/Sema/arm-neon-target.c b/clang/test/Sema/arm-neon-target.c
index 1dc2b00925d61..6859fb1219a3c 100644
--- a/clang/test/Sema/arm-neon-target.c
+++ b/clang/test/Sema/arm-neon-target.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple armv8a-none-linux-gnu -target-feature +neon -verify -emit-llvm -o - %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple armv8a-none-linux-gnu -target-feature +neon -verify -emit-llvm -o - %s
 // REQUIRES: arm-registered-target
 
 // Test that functions with the correct target attributes can use the correct NEON intrinsics.
diff --git a/clang/test/Sema/arm-neon-types.c b/clang/test/Sema/arm-neon-types.c
index 48df609e2f7a1..bb4ff7e7268c4 100644
--- a/clang/test/Sema/arm-neon-types.c
+++ b/clang/test/Sema/arm-neon-types.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple thumbv7-apple-darwin10 -target-cpu cortex-a8 -fsyntax-only -Wvector-conversion -ffreestanding -verify %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple thumbv7-apple-darwin10 -target-cpu cortex-a8 -fsyntax-only -Wvector-conversion -ffreestanding -verify %s
 // REQUIRES: aarch64-registered-target || arm-registered-target
 
 #ifndef INCLUDE
diff --git a/clang/test/Sema/arm64-neon-header.c b/clang/test/Sema/arm64-neon-header.c
index 033d26b642be8..231684a866ef1 100644
--- a/clang/test/Sema/arm64-neon-header.c
+++ b/clang/test/Sema/arm64-neon-header.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple arm64-apple-darwin -target-feature +neon -Wvector-conversion -fsyntax-only -ffreestanding -verify %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple arm64-apple-darwin -target-feature +neon -Wvector-conversion -fsyntax-only -ffreestanding -verify %s
 
 // REQUIRES: aarch64-registered-target || arm-registered-target
 
diff --git a/clang/test/Sema/attr-arm-sve-vector-bits.c b/clang/test/Sema/attr-arm-sve-vector-bits.c
index 447addb4d5d33..1a55f5eef5731 100644
--- a/clang/test/Sema/attr-arm-sve-vector-bits.c
+++ b/clang/test/Sema/attr-arm-sve-vector-bits.c
@@ -1,8 +1,8 @@
-// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -target-feature +sme -ffreestanding -fsyntax-only -verify=expected,streamingdifferent -mvscale-min=1 -mvscale-max=1 %s
-// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -target-feature +sme -ffreestanding -fsyntax-only -verify=expected,streamingdifferent -mvscale-min=2 -mvscale-max=2 -mvscale-streaming-min=2 %s
-// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -target-feature +sme -ffreestanding -fsyntax-only -verify=expected -mvscale-min=4 -mvscale-max=4 -mvscale-streaming-min=4 -mvscale-streaming-max=4 %s
-// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -target-feature +sme -ffreestanding -fsyntax-only -verify=expected,streamingdifferent -mvscale-min=8 -mvscale-max=8 -mvscale-streaming-min=4 -mvscale-streaming-max=8 %s
-// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -target-feature +sme -ffreestanding -fsyntax-only -verify=expected,streamingdifferent -mvscale-min=16 -mvscale-max=16 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -target-feature +sme -ffreestanding -fsyntax-only -verify=expected,streamingdifferent -mvscale-min=1 -mvscale-max=1 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -target-feature +sme -ffreestanding -fsyntax-only -verify=expected,streamingdifferent -mvscale-min=2 -mvscale-max=2 -mvscale-streaming-min=2 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -target-feature +sme -ffreestanding -fsyntax-only -verify=expected -mvscale-min=4 -mvscale-max=4 -mvscale-streaming-min=4 -mvscale-streaming-max=4 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -target-feature +sme -ffreestanding -fsyntax-only -verify=expected,streamingdifferent -mvscale-min=8 -mvscale-max=8 -mvscale-streaming-min=4 -mvscale-streaming-max=8 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -target-feature +sme -ffreestanding -fsyntax-only -verify=expected,streamingdifferent -mvscale-min=16 -mvscale-max=16 %s
 
 #include <stdint.h>
 
diff --git a/clang/test/Sema/attr-riscv-rvv-vector-bits.c b/clang/test/Sema/attr-riscv-rvv-vector-bits.c
index 9ac904b043f82..26691f06ac624 100644
--- a/clang/test/Sema/attr-riscv-rvv-vector-bits.c
+++ b/clang/test/Sema/attr-riscv-rvv-vector-bits.c
@@ -1,8 +1,8 @@
-// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -ffreestanding -fsyntax-only -verify -mvscale-min=1 -mvscale-max=1 %s
-// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -ffreestanding -fsyntax-only -verify -mvscale-min=2 -mvscale-max=2 %s
-// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -ffreestanding -fsyntax-only -verify -mvscale-min=4 -mvscale-max=4 %s
-// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -ffreestanding -fsyntax-only -verify -mvscale-min=8 -mvscale-max=8 %s
-// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -ffreestanding -fsyntax-only -verify -mvscale-min=16 -mvscale-max=16 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -ffreestanding -fsyntax-only -verify -mvscale-min=1 -mvscale-max=1 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -ffreestanding -fsyntax-only -verify -mvscale-min=2 -mvscale-max=2 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -ffreestanding -fsyntax-only -verify -mvscale-min=4 -mvscale-max=4 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -ffreestanding -fsyntax-only -verify -mvscale-min=8 -mvscale-max=8 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -ffreestanding -fsyntax-only -verify -mvscale-min=16 -mvscale-max=16 %s
 
 #include <stdint.h>
 
diff --git a/clang/test/Sema/builtins-hvx-none.c b/clang/test/Sema/builtins-hvx-none.c
index ad1b7332b5b8c..db61803e6f786 100644
--- a/clang/test/Sema/builtins-hvx-none.c
+++ b/clang/test/Sema/builtins-hvx-none.c
@@ -1,7 +1,7 @@
 // REQUIRES: hexagon-registered-target
-// RUN: %clang_cc1 -triple hexagon %s -target-cpu hexagonv60 -DTEST_HVXV60 -verify -S -o -
-// RUN: %clang_cc1 -triple hexagon %s -target-cpu hexagonv60 -DTEST_HVXV62 -verify -S -o -
-// RUN: %clang_cc1 -triple hexagon %s -target-cpu hexagonv60 -DTEST_HVXV65 -verify -S -o -
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple hexagon %s -target-cpu hexagonv60 -DTEST_HVXV60 -verify -S -o -
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple hexagon %s -target-cpu hexagonv60 -DTEST_HVXV62 -verify -S -o -
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple hexagon %s -target-cpu hexagonv60 -DTEST_HVXV65 -verify -S -o -
 
 typedef long Vect1024 __attribute__((__vector_size__(128)))
     __attribute__((aligned(128)));
diff --git a/clang/test/Sema/builtins-hvx-v60.c b/clang/test/Sema/builtins-hvx-v60.c
index 9a0ec4ff9e59e..46cf76652ca32 100644
--- a/clang/test/Sema/builtins-hvx-v60.c
+++ b/clang/test/Sema/builtins-hvx-v60.c
@@ -1,7 +1,7 @@
 // REQUIRES: hexagon-registered-target
-// RUN: %clang_cc1 -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv60 -target-cpu hexagonv60 -verify -S -o - -DTEST_HVXV60
-// RUN: %clang_cc1 -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv60 -target-cpu hexagonv60 -verify -S -o - -DTEST_HVXV62
-// RUN: %clang_cc1 -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv60 -target-cpu hexagonv60 -verify -S -o - -DTEST_HVXV65
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv60 -target-cpu hexagonv60 -verify -S -o - -DTEST_HVXV60
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv60 -target-cpu hexagonv60 -verify -S -o - -DTEST_HVXV62
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv60 -target-cpu hexagonv60 -verify -S -o - -DTEST_HVXV65
 
 typedef long Vect1024 __attribute__((__vector_size__(128)))
     __attribute__((aligned(128)));
diff --git a/clang/test/Sema/builtins-hvx-v62.c b/clang/test/Sema/builtins-hvx-v62.c
index 333b29ce974b1..61e07f208c7fb 100644
--- a/clang/test/Sema/builtins-hvx-v62.c
+++ b/clang/test/Sema/builtins-hvx-v62.c
@@ -1,7 +1,7 @@
 // REQUIRES: hexagon-registered-target
-// RUN: %clang_cc1 -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv62 -target-cpu hexagonv62 -verify -S -o - -DTEST_HVXV60
-// RUN: %clang_cc1 -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv62 -target-cpu hexagonv62 -verify -S -o - -DTEST_HVXV62
-// RUN: %clang_cc1 -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv62 -target-cpu hexagonv62 -verify -S -o - -DTEST_HVXV65
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv62 -target-cpu hexagonv62 -verify -S -o - -DTEST_HVXV60
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv62 -target-cpu hexagonv62 -verify -S -o - -DTEST_HVXV62
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv62 -target-cpu hexagonv62 -verify -S -o - -DTEST_HVXV65
 
 typedef long Vect1024 __attribute__((__vector_size__(128)))
     __attribute__((aligned(128)));
diff --git a/clang/test/Sema/builtins-hvx-v65.c b/clang/test/Sema/builtins-hvx-v65.c
index be6b7b0955d51..f3ce3b4341837 100644
--- a/clang/test/Sema/builtins-hvx-v65.c
+++ b/clang/test/Sema/builtins-hvx-v65.c
@@ -1,5 +1,5 @@
 // REQUIRES: hexagon-registered-target
-// RUN: %clang_cc1 -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv65 -target-cpu hexagonv65 -fsyntax-only -verify
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple hexagon %s -target-feature +hvx-length128b -target-feature +hvxv65 -target-cpu hexagonv65 -fsyntax-only -verify
 
 typedef long Vect1024 __attribute__((__vector_size__(128)))
     __attribute__((aligned(128)));
diff --git a/clang/test/Sema/builtins-mips-features.c b/clang/test/Sema/builtins-mips-features.c
index 4ea36d7f24dc0..495bf55934c8e 100644
--- a/clang/test/Sema/builtins-mips-features.c
+++ b/clang/test/Sema/builtins-mips-features.c
@@ -1,5 +1,5 @@
 // REQUIRES: mips-registered-target
-// RUN: %clang_cc1 -triple mips64 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple mips64 -fsyntax-only -verify %s
 
 typedef signed char v4i8 __attribute__ ((vector_size(4)));
 typedef signed char v4q7 __attribute__ ((vector_size(4)));
diff --git a/clang/test/Sema/builtins-x86.c b/clang/test/Sema/builtins-x86.c
index 7d9cdce3d7894..9b2bd148a3777 100644
--- a/clang/test/Sema/builtins-x86.c
+++ b/clang/test/Sema/builtins-x86.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple=x86_64-apple-darwin -fsyntax-only -verify %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple=x86_64-apple-darwin -fsyntax-only -verify %s
 
 typedef long long __m128i __attribute__((__vector_size__(16)));
 typedef float __m128 __attribute__((__vector_size__(16)));
diff --git a/clang/test/Sema/constant-builtins-vector.cpp b/clang/test/Sema/constant-builtins-vector.cpp
index 56919ade81e43..7da4601f38a72 100644
--- a/clang/test/Sema/constant-builtins-vector.cpp
+++ b/clang/test/Sema/constant-builtins-vector.cpp
@@ -1,10 +1,10 @@
-// RUN: %clang_cc1 -verify -std=c++2a -fsyntax-only -Wno-bit-int-extension %s
-// RUN: %clang_cc1 -verify -std=c++2a -fsyntax-only -Wno-bit-int-extension -triple ppc64-unknown-linux %s
-// RUN: %clang_cc1 -verify -std=c++2a -fsyntax-only -Wno-bit-int-extension -triple ppc64le-unknown-linux %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -verify -std=c++2a -fsyntax-only -Wno-bit-int-extension %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -verify -std=c++2a -fsyntax-only -Wno-bit-int-extension -triple ppc64-unknown-linux %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -verify -std=c++2a -fsyntax-only -Wno-bit-int-extension -triple ppc64le-unknown-linux %s
 
-// RUN: %clang_cc1 -verify -std=c++2a -fsyntax-only -Wno-bit-int-extension %s -fexperimental-new-constant-interpreter
-// RUN: %clang_cc1 -verify -std=c++2a -fsyntax-only -Wno-bit-int-extension -triple ppc64-unknown-linux %s -fexperimental-new-constant-interpreter
-// RUN: %clang_cc1 -verify -std=c++2a -fsyntax-only -Wno-bit-int-extension -triple ppc64le-unknown-linux %s -fexperimental-new-constant-interpreter
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -verify -std=c++2a -fsyntax-only -Wno-bit-int-extension %s -fexperimental-new-constant-interpreter
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -verify -std=c++2a -fsyntax-only -Wno-bit-int-extension -triple ppc64-unknown-linux %s -fexperimental-new-constant-interpreter
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -verify -std=c++2a -fsyntax-only -Wno-bit-int-extension -triple ppc64le-unknown-linux %s -fexperimental-new-constant-interpreter
 
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 #define LITTLE_END 1
diff --git a/clang/test/Sema/conversion-64-32.c b/clang/test/Sema/conversion-64-32.c
index c172dd109f3be..5fde61724640e 100644
--- a/clang/test/Sema/conversion-64-32.c
+++ b/clang/test/Sema/conversion-64-32.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -verify -Wshorten-64-to-32 -triple x86_64-apple-darwin %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -fsyntax-only -verify -Wshorten-64-to-32 -triple x86_64-apple-darwin %s
 
 int test0(long v) {
   return v; // expected-warning {{implicit conversion loses integer precision}}
diff --git a/clang/test/Sema/conversion-implicit-int-includes-64-to-32.c b/clang/test/Sema/conversion-implicit-int-includes-64-to-32.c
index e22ccbe821f65..925a8aa223782 100644
--- a/clang/test/Sema/conversion-implicit-int-includes-64-to-32.c
+++ b/clang/test/Sema/conversion-implicit-int-includes-64-to-32.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -verify -Wimplicit-int-conversion -triple x86_64-apple-darwin %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -fsyntax-only -verify -Wimplicit-int-conversion -triple x86_64-apple-darwin %s
 
 int test0(long v) {
   return v; // expected-warning {{implicit conversion loses integer precision}}
diff --git a/clang/test/Sema/ext_vector_ops.c b/clang/test/Sema/ext_vector_ops.c
index 5dc3047e145f1..a41b201f88f36 100644
--- a/clang/test/Sema/ext_vector_ops.c
+++ b/clang/test/Sema/ext_vector_ops.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 %s -verify -fsyntax-only -Wvector-conversion -triple x86_64-apple-darwin10
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all %s -verify -fsyntax-only -Wvector-conversion -triple x86_64-apple-darwin10
 
 typedef unsigned int v2u __attribute__ ((ext_vector_type(2)));
 typedef int v2s __attribute__ ((ext_vector_type(2)));
diff --git a/clang/test/Sema/overload-arm-mve.c b/clang/test/Sema/overload-arm-mve.c
index b419ba3c3203e..04c743b389085 100644
--- a/clang/test/Sema/overload-arm-mve.c
+++ b/clang/test/Sema/overload-arm-mve.c
@@ -1,5 +1,5 @@
-// RUN: %clang_cc1 -triple thumbv8.1m.main-none-none-eabi -target-feature +mve.fp -flax-vector-conversions=all -Werror -emit-llvm -o - %s | FileCheck %s
-// RUN: %clang_cc1 -triple thumbv8.1m.main-none-none-eabi -target-feature +mve.fp -flax-vector-conversions=all -verify -fsyntax-only -DERROR_CHECK %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple thumbv8.1m.main-none-none-eabi -target-feature +mve.fp -flax-vector-conversions=all -Werror -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple thumbv8.1m.main-none-none-eabi -target-feature +mve.fp -flax-vector-conversions=all -verify -fsyntax-only -DERROR_CHECK %s
 
 typedef   signed short      int16_t;
 typedef   signed int        int32_t;
diff --git a/clang/test/Sema/vector-assign.c b/clang/test/Sema/vector-assign.c
index 119a320585ef6..9d8055e2f7022 100644
--- a/clang/test/Sema/vector-assign.c
+++ b/clang/test/Sema/vector-assign.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 %s -verify -fsyntax-only -Wvector-conversion
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all %s -verify -fsyntax-only -Wvector-conversion
 typedef unsigned int v2u __attribute__ ((vector_size (8)));
 typedef signed int v2s __attribute__ ((vector_size (8)));
 typedef signed int v1s __attribute__ ((vector_size (4)));
diff --git a/clang/test/Sema/vector-cast.c b/clang/test/Sema/vector-cast.c
index c4502d2adf2eb..483b79f9db183 100644
--- a/clang/test/Sema/vector-cast.c
+++ b/clang/test/Sema/vector-cast.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only %s -verify -Wvector-conversion
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -fsyntax-only %s -verify -Wvector-conversion
 
 typedef long long t1 __attribute__ ((vector_size (8)));
 typedef char t2 __attribute__ ((vector_size (16)));
diff --git a/clang/test/Sema/vector-gcc-compat.c b/clang/test/Sema/vector-gcc-compat.c
index 6bb2c5168457c..b6cdbfff598e8 100644
--- a/clang/test/Sema/vector-gcc-compat.c
+++ b/clang/test/Sema/vector-gcc-compat.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 %s -verify -fsyntax-only -Weverything -Wno-unused-but-set-variable -triple x86_64-apple-darwin10
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all %s -verify -fsyntax-only -Weverything -Wno-unused-but-set-variable -triple x86_64-apple-darwin10
 
 // Test the compatibility of clang's vector extensions with gcc's vector
 // extensions for C. Notably &&, ||, ?: and ! are not available.
diff --git a/clang/test/Sema/vector-gcc-compat.cpp b/clang/test/Sema/vector-gcc-compat.cpp
index 42c24d91ea8f3..e208093d13fb2 100644
--- a/clang/test/Sema/vector-gcc-compat.cpp
+++ b/clang/test/Sema/vector-gcc-compat.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 %s -verify -fsyntax-only -Weverything -Wno-unused-but-set-variable -std=c++11 -triple x86_64-apple-darwin10
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all %s -verify -fsyntax-only -Weverything -Wno-unused-but-set-variable -std=c++11 -triple x86_64-apple-darwin10
 
 // Test the compatibility of clang++'s vector extensions with g++'s vector
 // extensions. In comparison to the extensions available in C, the !, ?:, && and
diff --git a/clang/test/Sema/vector-init.c b/clang/test/Sema/vector-init.c
index 81965a3768e9f..e6d8a6e856e6b 100644
--- a/clang/test/Sema/vector-init.c
+++ b/clang/test/Sema/vector-init.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 %s -fsyntax-only -verify
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all %s -fsyntax-only -verify
 
 //typedef __attribute__(( ext_vector_type(4) ))  float float4;
 typedef float float4 __attribute__((vector_size(16)));
diff --git a/clang/test/Sema/vector-ops.c b/clang/test/Sema/vector-ops.c
index 575f38b972f5e..2b631e02bec0a 100644
--- a/clang/test/Sema/vector-ops.c
+++ b/clang/test/Sema/vector-ops.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 %s -verify -fsyntax-only -Wvector-conversion -triple x86_64-apple-darwin10
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all %s -verify -fsyntax-only -Wvector-conversion -triple x86_64-apple-darwin10
 typedef unsigned int v2u __attribute__ ((vector_size (8)));
 typedef int v2s __attribute__ ((vector_size (8)));
 typedef float v2f __attribute__ ((vector_size(8)));
diff --git a/clang/test/SemaCXX/attr-arm-sve-vector-bits.cpp b/clang/test/SemaCXX/attr-arm-sve-vector-bits.cpp
index 1127f31619e77..8d3d793de089b 100644
--- a/clang/test/SemaCXX/attr-arm-sve-vector-bits.cpp
+++ b/clang/test/SemaCXX/attr-arm-sve-vector-bits.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -ffreestanding -fsyntax-only -verify -std=c++11 -mvscale-min=4 -mvscale-max=4 -Wconversion %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -ffreestanding -fsyntax-only -verify -std=c++11 -mvscale-min=4 -mvscale-max=4 -Wconversion %s
 // expected-no-diagnostics
 
 #include <stdint.h>
diff --git a/clang/test/SemaCXX/attr-riscv-rvv-vector-bits.cpp b/clang/test/SemaCXX/attr-riscv-rvv-vector-bits.cpp
index 6d18883b46fe2..0d52d35ad705b 100644
--- a/clang/test/SemaCXX/attr-riscv-rvv-vector-bits.cpp
+++ b/clang/test/SemaCXX/attr-riscv-rvv-vector-bits.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +zve64x -ffreestanding -fsyntax-only -verify -std=c++11 -mvscale-min=4 -mvscale-max=4 -Wconversion %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -triple riscv64-none-linux-gnu -target-feature +zve64x -ffreestanding -fsyntax-only -verify -std=c++11 -mvscale-min=4 -mvscale-max=4 -Wconversion %s
 // expected-no-diagnostics
 
 #include <stdint.h>
diff --git a/clang/test/SemaCXX/vector.cpp b/clang/test/SemaCXX/vector.cpp
index 808bdb679b09c..d051e37816f45 100644
--- a/clang/test/SemaCXX/vector.cpp
+++ b/clang/test/SemaCXX/vector.cpp
@@ -1,9 +1,9 @@
-// RUN: %clang_cc1 -flax-vector-conversions=all -triple x86_64-apple-darwin10 -fsyntax-only -verify %s
-// RUN: %clang_cc1 -flax-vector-conversions=all -triple x86_64-apple-darwin10 -fsyntax-only -verify -std=c++98 %s
-// RUN: %clang_cc1 -flax-vector-conversions=all -triple x86_64-apple-darwin10 -fsyntax-only -verify -std=c++11 %s
-// RUN: %clang_cc1 -flax-vector-conversions=all -triple x86_64-apple-darwin10 -fsyntax-only -verify -std=c++20 %s
-// RUN: %clang_cc1 -flax-vector-conversions=integer -triple x86_64-apple-darwin10 -fsyntax-only -verify %s -DNO_LAX_FLOAT
-// RUN: %clang_cc1 -flax-vector-conversions=none -triple x86_64-apple-darwin10 -fsyntax-only -verify %s -DNO_LAX_FLOAT -DNO_LAX_INT
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -flax-vector-conversions=all -triple x86_64-apple-darwin10 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -flax-vector-conversions=all -triple x86_64-apple-darwin10 -fsyntax-only -verify -std=c++98 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -flax-vector-conversions=all -triple x86_64-apple-darwin10 -fsyntax-only -verify -std=c++11 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -flax-vector-conversions=all -triple x86_64-apple-darwin10 -fsyntax-only -verify -std=c++20 %s
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -flax-vector-conversions=integer -triple x86_64-apple-darwin10 -fsyntax-only -verify %s -DNO_LAX_FLOAT
+// RUN: %clang_cc1 -Wno-deprecate-lax-vec-conv-all -flax-vector-conversions=none -triple x86_64-apple-darwin10 -fsyntax-only -verify %s -DNO_LAX_FLOAT -DNO_LAX_INT
 
 typedef char char16 __attribute__ ((__vector_size__ (16)));
 typedef long long longlong16 __attribute__ ((__vector_size__ (16)));
diff --git a/compiler-rt/lib/msan/tests/msan_test.cpp b/compiler-rt/lib/msan/tests/msan_test.cpp
index b0d8409d97ffc..99ad2c31a8865 100644
--- a/compiler-rt/lib/msan/tests/msan_test.cpp
+++ b/compiler-rt/lib/msan/tests/msan_test.cpp
@@ -4132,6 +4132,9 @@ typedef U4 V2x32 __attribute__((__vector_size__(8)));
 typedef U2 V4x16 __attribute__((__vector_size__(8)));
 typedef U1 V8x8 __attribute__((__vector_size__(8)));
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecate-lax-vec-conv-all"
+
 V8x16 shift_sse2_left_scalar(V8x16 x, U4 y) {
   return _mm_slli_epi16(x, y);
 }
@@ -4346,6 +4349,8 @@ TEST(VectorCmpTest, builtin_ia32_ucomisdlt) {
   EXPECT_NOT_POISONED(c);
 }
 
+#pragma clang diagnostic push
+
 #endif // defined(__x86_64__) && defined(__clang__)
 
 TEST(MemorySanitizerOrigins, SetGet) {
diff --git a/libcxx/test/std/experimental/simd/simd.class/simd_unary.pass.cpp b/libcxx/test/std/experimental/simd/simd.class/simd_unary.pass.cpp
index 056d6f65fc368..1d5979704302b 100644
--- a/libcxx/test/std/experimental/simd/simd.class/simd_unary.pass.cpp
+++ b/libcxx/test/std/experimental/simd/simd.class/simd_unary.pass.cpp
@@ -24,9 +24,16 @@
 // simd operator+() const noexcept;
 // simd operator-() const noexcept;
 
+#include "test_macros.h"
+
+TEST_DIAGNOSTIC_PUSH
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecate-lax-vec-conv-all")
+
 #include "../test_utils.h"
 #include <experimental/simd>
 
+TEST_DIAGNOSTIC_POP
+
 namespace ex = std::experimental::parallelism_v2;
 
 template <class T, std::size_t>