35 lines
1.3 KiB
LLVM
35 lines
1.3 KiB
LLVM
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; RUN: opt -loop-vectorize -force-vector-width=2 -pass-remarks-missed='loop-vectorize' -S < %s 2>&1 | FileCheck %s
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; CHECK: remark: <unknown>:0:0: loop not vectorized: integer loop induction variable could not be identified
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; Test-case ('-O2 -ffast-math') from PR38800.
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; (Set '-force-vector-width=2' to enable vector code generation.)
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;
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; No integral induction variable in the source-code caused a compiler-crash
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; when attempting to vectorize. With the fix, a remark indicating why it
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; wasn't vectorized is produced
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;
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;void foo(float *ptr, float val) {
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; float f;
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; for (f = 0.1f; f < 1.0f; f += 0.01f)
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; *ptr += val;
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;}
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define void @foo(float* nocapture %ptr, float %val) local_unnamed_addr {
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entry:
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%ptr.promoted = load float, float* %ptr, align 4
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br label %for.body
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for.body: ; preds = %entry, %for.body
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%add5 = phi float [ %ptr.promoted, %entry ], [ %add, %for.body ]
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%f.04 = phi float [ 0x3FB99999A0000000, %entry ], [ %add1, %for.body ]
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%add = fadd fast float %add5, %val
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%add1 = fadd fast float %f.04, 0x3F847AE140000000
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%cmp = fcmp fast olt float %add1, 1.000000e+00
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body
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store float %add, float* %ptr, align 4
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ret void
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}
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