diff options
Diffstat (limited to 'test/Transforms/LoopVectorize/X86/uniform-phi.ll')
| -rw-r--r-- | test/Transforms/LoopVectorize/X86/uniform-phi.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/X86/uniform-phi.ll b/test/Transforms/LoopVectorize/X86/uniform-phi.ll index 881f29a94cb5..2be565e71105 100644 --- a/test/Transforms/LoopVectorize/X86/uniform-phi.ll +++ b/test/Transforms/LoopVectorize/X86/uniform-phi.ll @@ -75,3 +75,25 @@ for.end: ; preds = %for.body ret i64 %retval } +; CHECK-LABEL: PR38786 +; Check that first order recurrence phis (%phi32 and %phi64) are not uniform. +; CHECK-NOT: LV: Found uniform instruction: %phi +define void @PR38786(double* %y, double* %x, i64 %n) { +entry: + br label %for.body + +for.body: + %phi32 = phi i32 [ 0, %entry ], [ %i32next, %for.body ] + %phi64 = phi i64 [ 0, %entry ], [ %i64next, %for.body ] + %i32next = add i32 %phi32, 1 + %i64next = zext i32 %i32next to i64 + %xip = getelementptr inbounds double, double* %x, i64 %i64next + %yip = getelementptr inbounds double, double* %y, i64 %phi64 + %xi = load double, double* %xip, align 8 + store double %xi, double* %yip, align 8 + %cmp = icmp slt i64 %i64next, %n + br i1 %cmp, label %for.body, label %for.end + +for.end: + ret void +} |