Rebase on main

Required changes:
* Use APInt::getAllOnes() instead of using -1 in DAG.getConstant()
* A new test case was added that is affected by this change

Author: Il-Capitano

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

@@ -15859,7 +15859,8 @@ static SDValue getVectorBitwiseReduce(unsigned Opcode, SDValue Vec, EVT VT,
     if (ScalarOpcode == ISD::AND && NumElems < 16) {
       Vec = DAG.getNode(
           ISD::XOR, DL, VecVT, Vec,
-          DAG.getSplatVector(VecVT, DL, DAG.getConstant(-1, DL, MVT::i32)));
+          DAG.getSplatVector(
+              VecVT, DL, DAG.getConstant(APInt::getAllOnes(32), DL, MVT::i32)));
     }
 
     // any_ext doesn't work with umin/umax, so only use it for uadd.

llvm/test/CodeGen/AArch64/vector-extract-last-active.ll

@@ -62,13 +62,11 @@ define i16 @extract_last_i16(<8 x i16> %data, <8 x i16> %mask, i16 %passthru) {
 ; NEON-FIXED-NEXT:    str q0, [sp]
 ; NEON-FIXED-NEXT:    xtn v1.8b, v1.8h
 ; NEON-FIXED-NEXT:    and v2.8b, v1.8b, v2.8b
-; NEON-FIXED-NEXT:    umaxv b1, v1.8b
+; NEON-FIXED-NEXT:    fcmp d1, #0.0
 ; NEON-FIXED-NEXT:    umaxv b2, v2.8b
 ; NEON-FIXED-NEXT:    fmov w8, s2
 ; NEON-FIXED-NEXT:    bfi x9, x8, #1, #3
 ; NEON-FIXED-NEXT:    ldrh w8, [x9]
-; NEON-FIXED-NEXT:    fmov w9, s1
-; NEON-FIXED-NEXT:    tst w9, #0x1
 ; NEON-FIXED-NEXT:    csel w0, w8, w0, ne
 ; NEON-FIXED-NEXT:    add sp, sp, #16
 ; NEON-FIXED-NEXT:    ret
@@ -83,13 +81,11 @@ define i16 @extract_last_i16(<8 x i16> %data, <8 x i16> %mask, i16 %passthru) {
 ; SVE-FIXED-NEXT:    str q0, [sp]
 ; SVE-FIXED-NEXT:    xtn v1.8b, v1.8h
 ; SVE-FIXED-NEXT:    and v2.8b, v1.8b, v2.8b
-; SVE-FIXED-NEXT:    umaxv b1, v1.8b
+; SVE-FIXED-NEXT:    fcmp d1, #0.0
 ; SVE-FIXED-NEXT:    umaxv b2, v2.8b
 ; SVE-FIXED-NEXT:    fmov w8, s2
 ; SVE-FIXED-NEXT:    bfi x9, x8, #1, #3
 ; SVE-FIXED-NEXT:    ldrh w8, [x9]
-; SVE-FIXED-NEXT:    fmov w9, s1
-; SVE-FIXED-NEXT:    tst w9, #0x1
 ; SVE-FIXED-NEXT:    csel w0, w8, w0, ne
 ; SVE-FIXED-NEXT:    add sp, sp, #16
 ; SVE-FIXED-NEXT:    ret
@@ -110,13 +106,11 @@ define i32 @extract_last_i32(<4 x i32> %data, <4 x i32> %mask, i32 %passthru) {
 ; NEON-FIXED-NEXT:    str q0, [sp]
 ; NEON-FIXED-NEXT:    xtn v1.4h, v1.4s
 ; NEON-FIXED-NEXT:    and v2.8b, v1.8b, v2.8b
-; NEON-FIXED-NEXT:    umaxv h1, v1.4h
+; NEON-FIXED-NEXT:    fcmp d1, #0.0
 ; NEON-FIXED-NEXT:    umaxv h2, v2.4h
 ; NEON-FIXED-NEXT:    fmov w8, s2
 ; NEON-FIXED-NEXT:    bfi x9, x8, #2, #2
 ; NEON-FIXED-NEXT:    ldr w8, [x9]
-; NEON-FIXED-NEXT:    fmov w9, s1
-; NEON-FIXED-NEXT:    tst w9, #0x1
 ; NEON-FIXED-NEXT:    csel w0, w8, w0, ne
 ; NEON-FIXED-NEXT:    add sp, sp, #16
 ; NEON-FIXED-NEXT:    ret
@@ -131,13 +125,11 @@ define i32 @extract_last_i32(<4 x i32> %data, <4 x i32> %mask, i32 %passthru) {
 ; SVE-FIXED-NEXT:    str q0, [sp]
 ; SVE-FIXED-NEXT:    xtn v1.4h, v1.4s
 ; SVE-FIXED-NEXT:    and v2.8b, v1.8b, v2.8b
-; SVE-FIXED-NEXT:    umaxv h1, v1.4h
+; SVE-FIXED-NEXT:    fcmp d1, #0.0
 ; SVE-FIXED-NEXT:    umaxv h2, v2.4h
 ; SVE-FIXED-NEXT:    fmov w8, s2
 ; SVE-FIXED-NEXT:    bfi x9, x8, #2, #2
 ; SVE-FIXED-NEXT:    ldr w8, [x9]
-; SVE-FIXED-NEXT:    fmov w9, s1
-; SVE-FIXED-NEXT:    tst w9, #0x1
 ; SVE-FIXED-NEXT:    csel w0, w8, w0, ne
 ; SVE-FIXED-NEXT:    add sp, sp, #16
 ; SVE-FIXED-NEXT:    ret
@@ -158,13 +150,11 @@ define i64 @extract_last_i64(<2 x i64> %data, <2 x i64> %mask, i64 %passthru) {
 ; NEON-FIXED-NEXT:    str q0, [sp]
 ; NEON-FIXED-NEXT:    xtn v1.2s, v1.2d
 ; NEON-FIXED-NEXT:    and v2.8b, v1.8b, v2.8b
-; NEON-FIXED-NEXT:    umaxp v1.2s, v1.2s, v1.2s
+; NEON-FIXED-NEXT:    fcmp d1, #0.0
 ; NEON-FIXED-NEXT:    umaxp v2.2s, v2.2s, v2.2s
 ; NEON-FIXED-NEXT:    fmov w8, s2
 ; NEON-FIXED-NEXT:    bfi x9, x8, #3, #1
 ; NEON-FIXED-NEXT:    ldr x8, [x9]
-; NEON-FIXED-NEXT:    fmov w9, s1
-; NEON-FIXED-NEXT:    tst w9, #0x1
 ; NEON-FIXED-NEXT:    csel x0, x8, x0, ne
 ; NEON-FIXED-NEXT:    add sp, sp, #16
 ; NEON-FIXED-NEXT:    ret
@@ -179,13 +169,11 @@ define i64 @extract_last_i64(<2 x i64> %data, <2 x i64> %mask, i64 %passthru) {
 ; SVE-FIXED-NEXT:    str q0, [sp]
 ; SVE-FIXED-NEXT:    xtn v1.2s, v1.2d
 ; SVE-FIXED-NEXT:    and v2.8b, v1.8b, v2.8b
-; SVE-FIXED-NEXT:    umaxp v1.2s, v1.2s, v1.2s
+; SVE-FIXED-NEXT:    fcmp d1, #0.0
 ; SVE-FIXED-NEXT:    umaxp v2.2s, v2.2s, v2.2s
 ; SVE-FIXED-NEXT:    fmov w8, s2
 ; SVE-FIXED-NEXT:    bfi x9, x8, #3, #1
 ; SVE-FIXED-NEXT:    ldr x8, [x9]
-; SVE-FIXED-NEXT:    fmov w9, s1
-; SVE-FIXED-NEXT:    tst w9, #0x1
 ; SVE-FIXED-NEXT:    csel x0, x8, x0, ne
 ; SVE-FIXED-NEXT:    add sp, sp, #16
 ; SVE-FIXED-NEXT:    ret
@@ -206,13 +194,11 @@ define float @extract_last_float(<4 x float> %data, <4 x i32> %mask, float %pass
 ; NEON-FIXED-NEXT:    str q0, [sp]
 ; NEON-FIXED-NEXT:    xtn v1.4h, v1.4s
 ; NEON-FIXED-NEXT:    and v3.8b, v1.8b, v3.8b
-; NEON-FIXED-NEXT:    umaxv h1, v1.4h
+; NEON-FIXED-NEXT:    fcmp d1, #0.0
 ; NEON-FIXED-NEXT:    umaxv h3, v3.4h
 ; NEON-FIXED-NEXT:    fmov w8, s3
 ; NEON-FIXED-NEXT:    bfi x9, x8, #2, #2
-; NEON-FIXED-NEXT:    fmov w8, s1
 ; NEON-FIXED-NEXT:    ldr s0, [x9]
-; NEON-FIXED-NEXT:    tst w8, #0x1
 ; NEON-FIXED-NEXT:    fcsel s0, s0, s2, ne
 ; NEON-FIXED-NEXT:    add sp, sp, #16
 ; NEON-FIXED-NEXT:    ret
@@ -227,13 +213,11 @@ define float @extract_last_float(<4 x float> %data, <4 x i32> %mask, float %pass
 ; SVE-FIXED-NEXT:    str q0, [sp]
 ; SVE-FIXED-NEXT:    xtn v1.4h, v1.4s
 ; SVE-FIXED-NEXT:    and v3.8b, v1.8b, v3.8b
-; SVE-FIXED-NEXT:    umaxv h1, v1.4h
+; SVE-FIXED-NEXT:    fcmp d1, #0.0
 ; SVE-FIXED-NEXT:    umaxv h3, v3.4h
 ; SVE-FIXED-NEXT:    fmov w8, s3
 ; SVE-FIXED-NEXT:    bfi x9, x8, #2, #2
-; SVE-FIXED-NEXT:    fmov w8, s1
 ; SVE-FIXED-NEXT:    ldr s0, [x9]
-; SVE-FIXED-NEXT:    tst w8, #0x1
 ; SVE-FIXED-NEXT:    fcsel s0, s0, s2, ne
 ; SVE-FIXED-NEXT:    add sp, sp, #16
 ; SVE-FIXED-NEXT:    ret
@@ -254,13 +238,11 @@ define double @extract_last_double(<2 x double> %data, <2 x i64> %mask, double %
 ; NEON-FIXED-NEXT:    str q0, [sp]
 ; NEON-FIXED-NEXT:    xtn v1.2s, v1.2d
 ; NEON-FIXED-NEXT:    and v3.8b, v1.8b, v3.8b
-; NEON-FIXED-NEXT:    umaxp v1.2s, v1.2s, v1.2s
+; NEON-FIXED-NEXT:    fcmp d1, #0.0
 ; NEON-FIXED-NEXT:    umaxp v3.2s, v3.2s, v3.2s
 ; NEON-FIXED-NEXT:    fmov w8, s3
 ; NEON-FIXED-NEXT:    bfi x9, x8, #3, #1
-; NEON-FIXED-NEXT:    fmov w8, s1
 ; NEON-FIXED-NEXT:    ldr d0, [x9]
-; NEON-FIXED-NEXT:    tst w8, #0x1
 ; NEON-FIXED-NEXT:    fcsel d0, d0, d2, ne
 ; NEON-FIXED-NEXT:    add sp, sp, #16
 ; NEON-FIXED-NEXT:    ret
@@ -275,13 +257,11 @@ define double @extract_last_double(<2 x double> %data, <2 x i64> %mask, double %
 ; SVE-FIXED-NEXT:    str q0, [sp]
 ; SVE-FIXED-NEXT:    xtn v1.2s, v1.2d
 ; SVE-FIXED-NEXT:    and v3.8b, v1.8b, v3.8b
-; SVE-FIXED-NEXT:    umaxp v1.2s, v1.2s, v1.2s
+; SVE-FIXED-NEXT:    fcmp d1, #0.0
 ; SVE-FIXED-NEXT:    umaxp v3.2s, v3.2s, v3.2s
 ; SVE-FIXED-NEXT:    fmov w8, s3
 ; SVE-FIXED-NEXT:    bfi x9, x8, #3, #1
-; SVE-FIXED-NEXT:    fmov w8, s1
 ; SVE-FIXED-NEXT:    ldr d0, [x9]
-; SVE-FIXED-NEXT:    tst w8, #0x1
 ; SVE-FIXED-NEXT:    fcsel d0, d0, d2, ne
 ; SVE-FIXED-NEXT:    add sp, sp, #16
 ; SVE-FIXED-NEXT:    ret