d9b511d8e8
Currenlty PseudoProbeInserter is a pass conditioned on a target switch. It works well with a single clang invocation. It doesn't work so well when the backend is called separately (i.e, through the linker or llc), where user has always to pass -pseudo-probe-for-profiling explictly. I'm making the pass a default pass that requires no command line arg to trigger, but will be actually run depending on whether the CU comes with `llvm.pseudo_probe_desc` metadata. Reviewed By: wenlei Differential Revision: https://reviews.llvm.org/D110209
34 lines
901 B
LLVM
34 lines
901 B
LLVM
; REQUIRES: x86_64-linux
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; RUN: llc < %s -mcpu=generic -mtriple=x86_64-- -O3 | FileCheck %s
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define float @foo(float %x) #0 {
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%tmp1 = fmul float %x, 3.000000e+00
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%tmp3 = fmul float %x, 5.000000e+00
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%tmp5 = fmul float %x, 7.000000e+00
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%tmp7 = fmul float %x, 1.100000e+01
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call void @llvm.pseudoprobe(i64 6699318081062747564, i64 1, i32 0, i64 -1)
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%tmp10 = fadd float %tmp1, %tmp3
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%tmp12 = fadd float %tmp10, %tmp5
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%tmp14 = fadd float %tmp12, %tmp7
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ret float %tmp14
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; CHECK: mulss
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; CHECK: mulss
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; CHECK: addss
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; CHECK: mulss
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; CHECK: addss
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; CHECK: mulss
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; CHECK: addss
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; CHECK: ret
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}
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; Function Attrs: inaccessiblememonly nounwind willreturn
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declare void @llvm.pseudoprobe(i64, i64, i32, i64) #1
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attributes #0 = { nounwind }
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attributes #1 = { inaccessiblememonly nounwind willreturn }
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!llvm.pseudo_probe_desc = !{!0}
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!0 = !{i64 6699318081062747564, i64 4294967295, !"foo", null}
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