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40 lines
757 B
LLVM
40 lines
757 B
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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; CHECK: no_crash
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define float @no_crash(float %a) nounwind {
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entry:
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br label %for.body
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for.body:
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%sum.057 = phi float [ 0.000000e+00, %entry ], [ %add5, %bb0 ]
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%add5 = fadd float %sum.057, %a ; PR14592
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br i1 undef, label %bb0, label %end
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bb0:
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br label %for.body
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end:
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ret float %add5
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}
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; CHECK: fold_phi
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define float @fold_phi(float %a) nounwind {
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entry:
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br label %for.body
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for.body:
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; CHECK: phi float
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; CHECK-NEXT: br i1 undef
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%sum.057 = phi float [ 0.000000e+00, %entry ], [ %add5, %bb0 ]
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%add5 = fadd float %sum.057, 1.0 ;; Should be moved to the latch!
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br i1 undef, label %bb0, label %end
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; CHECK: bb0:
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bb0:
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; CHECK: fadd float
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br label %for.body
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end:
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ret float %add5
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}
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