[LV] Convert runtime diff check test to use opaque pointers.

Modernize the test to make it easier to extend with up-to-date IR.

(cherry picked from commit 3b135ef)

Author: fhahn

llvm/test/Transforms/LoopVectorize/runtime-checks-difference.ll

@@ -3,11 +3,11 @@
 
 target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
 
-define void @same_step_and_size(i32* %a, i32* %b, i64 %n) {
+define void @same_step_and_size(ptr %a, i32* %b, i64 %n) {
 ; CHECK-LABEL: @same_step_and_size(
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[A2:%.*]] = ptrtoint i32* [[A:%.*]] to i64
-; CHECK-NEXT:    [[B1:%.*]] = ptrtoint i32* [[B:%.*]] to i64
+; CHECK-NEXT:    [[A2:%.*]] = ptrtoint ptr [[A:%.*]] to i64
+; CHECK-NEXT:    [[B1:%.*]] = ptrtoint ptr [[B:%.*]] to i64
 ; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 4
 ; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %scalar.ph, label %vector.memcheck
 ; CHECK:       vector.memcheck:
@@ -20,11 +20,11 @@ entry:
 
 loop:
   %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
-  %gep.a = getelementptr inbounds i32, i32* %a, i64 %iv
-  %l = load i32, i32* %gep.a
+  %gep.a = getelementptr inbounds i32, ptr %a, i64 %iv
+  %l = load i32, ptr %gep.a
   %mul = mul nsw i32 %l, 3
-  %gep.b = getelementptr inbounds i32, i32* %b, i64 %iv
-  store i32 %mul, i32* %gep.b
+  %gep.b = getelementptr inbounds i32, ptr %b, i64 %iv
+  store i32 %mul, ptr %gep.b
   %iv.next = add nuw nsw i64 %iv, 1
   %exitcond = icmp eq i64 %iv.next, %n
   br i1 %exitcond, label %exit, label %loop
@@ -33,11 +33,11 @@ exit:
   ret void
 }
 
-define void @same_step_and_size_no_dominance_between_accesses(i32* %a, i32* %b, i64 %n, i64 %x) {
+define void @same_step_and_size_no_dominance_between_accesses(ptr %a, ptr %b, i64 %n, i64 %x) {
 ; CHECK-LABEL: @same_step_and_size_no_dominance_between_accesses(
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[B2:%.*]] = ptrtoint i32* [[B:%.*]] to i64
-; CHECK-NEXT:    [[A1:%.*]] = ptrtoint i32* [[A:%.*]] to i64
+; CHECK-NEXT:    [[B2:%.*]] = ptrtoint ptr [[B:%.*]] to i64
+; CHECK-NEXT:    [[A1:%.*]] = ptrtoint ptr [[A:%.*]] to i64
 ; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 4
 ; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %scalar.ph, label %vector.memcheck
 ; CHECK:       vector.memcheck:
@@ -54,13 +54,13 @@ loop:
   br i1 %cmp, label %then, label %else
 
 then:
-  %gep.a = getelementptr inbounds i32, i32* %a, i64 %iv
-  store i32 0, i32* %gep.a
+  %gep.a = getelementptr inbounds i32, ptr %a, i64 %iv
+  store i32 0, ptr %gep.a
   br label %loop.latch
 
 else:
-  %gep.b = getelementptr inbounds i32, i32* %b, i64 %iv
-  store i32 10, i32* %gep.b
+  %gep.b = getelementptr inbounds i32, ptr %b, i64 %iv
+  store i32 10, ptr %gep.b
   br label %loop.latch
 
 loop.latch:
@@ -72,20 +72,18 @@ exit:
   ret void
 }
 
-define void @different_steps_and_different_access_sizes(i16* %a, i32* %b, i64 %n) {
+define void @different_steps_and_different_access_sizes(ptr %a, ptr %b, i64 %n) {
 ; CHECK-LABEL: @different_steps_and_different_access_sizes(
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[B1:%.*]] = bitcast i32* [[B:%.*]] to i8*
-; CHECK-NEXT:    [[A3:%.*]] = bitcast i16* [[A:%.*]] to i8*
 ; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 4
 ; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %scalar.ph, label %vector.memcheck
 ; CHECK:       vector.memcheck:
-; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i32, i32* [[B]], i64 [[N]]
-; CHECK-NEXT:    [[SCEVGEP2:%.*]] = bitcast i32* [[SCEVGEP]] to i8*
-; CHECK-NEXT:    [[SCEVGEP4:%.*]] = getelementptr i16, i16* [[A]], i64 [[N]]
-; CHECK-NEXT:    [[SCEVGEP45:%.*]] = bitcast i16* [[SCEVGEP4]] to i8*
-; CHECK-NEXT:    [[BOUND0:%.*]] = icmp ult i8* [[B1]], [[SCEVGEP45]]
-; CHECK-NEXT:    [[BOUND1:%.*]] = icmp ult i8* [[A3]], [[SCEVGEP2]]
+; CHECK-NEXT:    [[N_SHL_2:%.]] = shl i64 %n, 2
+; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr %b, i64 [[N_SHL_2]]
+; CHECK-NEXT:    [[N_SHL_1:%.]] = shl i64 %n, 1
+; CHECK-NEXT:    [[SCEVGEP4:%.*]] = getelementptr i8, ptr %a, i64 [[N_SHL_1]]
+; CHECK-NEXT:    [[BOUND0:%.*]] = icmp ult ptr %b, [[SCEVGEP4]]
+; CHECK-NEXT:    [[BOUND1:%.*]] = icmp ult ptr %a, [[SCEVGEP]]
 ; CHECK-NEXT:    [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]]
 ; CHECK-NEXT:    br i1 [[FOUND_CONFLICT]], label %scalar.ph, label %vector.ph
 ;
@@ -94,12 +92,12 @@ entry:
 
 loop:
   %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
-  %gep.a = getelementptr inbounds i16, i16* %a, i64 %iv
-  %l = load i16, i16* %gep.a
+  %gep.a = getelementptr inbounds i16, ptr %a, i64 %iv
+  %l = load i16, ptr %gep.a
   %l.ext = sext i16 %l to i32
   %mul = mul nsw i32 %l.ext, 3
-  %gep.b = getelementptr inbounds i32, i32* %b, i64 %iv
-  store i32 %mul, i32* %gep.b
+  %gep.b = getelementptr inbounds i32, ptr %b, i64 %iv
+  store i32 %mul, ptr %gep.b
   %iv.next = add nuw nsw i64 %iv, 1
   %exitcond = icmp eq i64 %iv.next, %n
   br i1 %exitcond, label %exit, label %loop
@@ -108,11 +106,11 @@ exit:
   ret void
 }
 
-define void @steps_match_but_different_access_sizes_1([2 x i16]* %a, i32* %b, i64 %n) {
+define void @steps_match_but_different_access_sizes_1(ptr %a, ptr %b, i64 %n) {
 ; CHECK-LABEL: @steps_match_but_different_access_sizes_1(
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[A2:%.*]] = ptrtoint [2 x i16]* [[A:%.*]] to i64
-; CHECK-NEXT:    [[B1:%.*]] = ptrtoint i32* [[B:%.*]] to i64
+; CHECK-NEXT:    [[A2:%.*]] = ptrtoint ptr [[A:%.*]] to i64
+; CHECK-NEXT:    [[B1:%.*]] = ptrtoint ptr [[B:%.*]] to i64
 ; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 4
 ; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %scalar.ph, label %vector.memcheck
 ; CHECK:       vector.memcheck:
@@ -126,12 +124,12 @@ entry:
 
 loop:
   %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
-  %gep.a = getelementptr inbounds [2 x i16], [2 x i16]* %a, i64 %iv, i64 1
-  %l = load i16, i16* %gep.a
+  %gep.a = getelementptr inbounds [2 x i16], ptr %a, i64 %iv, i64 1
+  %l = load i16, ptr %gep.a
   %l.ext = sext i16 %l to i32
   %mul = mul nsw i32 %l.ext, 3
-  %gep.b = getelementptr inbounds i32, i32* %b, i64 %iv
-  store i32 %mul, i32* %gep.b
+  %gep.b = getelementptr inbounds i32, ptr %b, i64 %iv
+  store i32 %mul, ptr %gep.b
   %iv.next = add nuw nsw i64 %iv, 1
   %exitcond = icmp eq i64 %iv.next, %n
   br i1 %exitcond, label %exit, label %loop
@@ -142,11 +140,11 @@ exit:
 
 ; Same as @steps_match_but_different_access_sizes_1, but with source and sink
 ; accesses flipped.
-define void @steps_match_but_different_access_sizes_2([2 x i16]* %a, i32* %b, i64 %n) {
+define void @steps_match_but_different_access_sizes_2(ptr %a, ptr %b, i64 %n) {
 ; CHECK-LABEL: @steps_match_but_different_access_sizes_2(
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[B2:%.*]] = ptrtoint i32* [[B:%.*]] to i64
-; CHECK-NEXT:    [[A1:%.*]] = ptrtoint [2 x i16]* [[A:%.*]] to i64
+; CHECK-NEXT:    [[B2:%.*]] = ptrtoint ptr [[B:%.*]] to i64
+; CHECK-NEXT:    [[A1:%.*]] = ptrtoint ptr [[A:%.*]] to i64
 ; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 4
 ; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %scalar.ph, label %vector.memcheck
 ; CHECK:       vector.memcheck:
@@ -160,12 +158,12 @@ entry:
 
 loop:
   %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
-  %gep.b = getelementptr inbounds i32, i32* %b, i64 %iv
-  %l = load i32, i32* %gep.b
+  %gep.b = getelementptr inbounds i32, ptr %b, i64 %iv
+  %l = load i32, ptr %gep.b
   %mul = mul nsw i32 %l, 3
-  %gep.a = getelementptr inbounds [2 x i16], [2 x i16]* %a, i64 %iv, i64 1
+  %gep.a = getelementptr inbounds [2 x i16], ptr %a, i64 %iv, i64 1
   %trunc = trunc i32 %mul to i16
-  store i16 %trunc, i16* %gep.a
+  store i16 %trunc, ptr %gep.a
   %iv.next = add nuw nsw i64 %iv, 1
   %exitcond = icmp eq i64 %iv.next, %n
   br i1 %exitcond, label %exit, label %loop