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edd6c8b874
Retry of 330619a3a623 that includes a clang test update. Original commit message: If we run passes before lowering llvm.expect intrinsics to metadata, then those passes have no way to act on the hints provided by llvm.expect. SimplifyCFG is the known offender, and we made it smarter about profile metadata in D98898 <https://reviews.llvm.org/D98898>. In the motivating example from https://llvm.org/PR49336 , this means we were ignoring the recommended method for a programmer to tell the compiler that a compare+branch is expensive. This change appears to solve that case - the metadata survives to the backend, the compare order is as expected in IR, and the backend does not do anything to reverse it. We make the same change to the old pass manager to keep things synchronized. Differential Revision: https://reviews.llvm.org/D100213
39 lines
2.7 KiB
LLVM
39 lines
2.7 KiB
LLVM
; RUN: opt -debug-pass-manager -passes='default<O2>' -pgo-kind=pgo-instr-gen-pipeline -profile-file='temp' %s 2>&1 |FileCheck %s --check-prefixes=GEN
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; RUN: llvm-profdata merge %S/Inputs/new-pm-pgo.proftext -o %t.profdata
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; RUN: opt -debug-pass-manager -passes='default<O2>' -pgo-kind=pgo-instr-use-pipeline -profile-file='%t.profdata' %s 2>&1 |FileCheck %s --check-prefixes=USE
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; RUN: opt -debug-pass-manager -passes='thinlto-pre-link<O2>' -pgo-kind=pgo-instr-use-pipeline -profile-file='%t.profdata' %s 2>&1 |FileCheck %s --check-prefixes=USE
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; RUN: opt -debug-pass-manager -passes='thinlto<O2>' -pgo-kind=pgo-instr-use-pipeline -profile-file='%t.profdata' %s 2>&1 |FileCheck %s --check-prefixes=USE_POST_LINK
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; RUN: opt -debug-pass-manager -passes='default<O2>' -hot-cold-split -pgo-kind=pgo-instr-use-pipeline -profile-file='%t.profdata' %s 2>&1 |FileCheck %s --check-prefixes=USE --check-prefixes=SPLIT
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; RUN: opt -debug-pass-manager -passes='default<O2>' -pgo-kind=pgo-sample-use-pipeline -profile-file='%S/Inputs/new-pm-pgo.prof' %s 2>&1 \
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; RUN: |FileCheck %s --check-prefixes=SAMPLE_USE,SAMPLE_USE_O
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; RUN: opt -debug-pass-manager -passes='thinlto-pre-link<O2>' -pgo-kind=pgo-sample-use-pipeline -profile-file='%S/Inputs/new-pm-pgo.prof' %s 2>&1 \
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; RUN: |FileCheck %s --check-prefixes=SAMPLE_USE,SAMPLE_USE_PRE_LINK
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; RUN: opt -debug-pass-manager -passes='thinlto<O2>' -pgo-kind=pgo-sample-use-pipeline -profile-file='%S/Inputs/new-pm-pgo.prof' %s 2>&1 \
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; RUN: |FileCheck %s --check-prefixes=SAMPLE_USE,SAMPLE_USE_POST_LINK
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; RUN: opt -debug-pass-manager -passes='default<O2>' -new-pm-debug-info-for-profiling %s 2>&1 |FileCheck %s --check-prefixes=SAMPLE_GEN
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;
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; GEN: Running pass: PGOInstrumentationGen
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; USE: Running pass: PGOInstrumentationUse
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; USE: Running pass: PGOIndirectCallPromotion
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; USE: Running pass: PGOMemOPSizeOpt
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; USE_POST_LINK: Running pass: PGOIndirectCallPromotion
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; USE_POST_LINK: Running pass: PGOMemOPSizeOpt
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; SAMPLE_USE_O: Running pass: AddDiscriminatorsPass
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; SAMPLE_USE_PRE_LINK: Running pass: AddDiscriminatorsPass
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; SAMPLE_USE: Running pass: LowerExpectIntrinsicPass
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; SAMPLE_USE: Running pass: SimplifyCFGPass
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; SAMPLE_USE: Running pass: SROA
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; SAMPLE_USE: Running pass: EarlyCSEPass
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; SAMPLE_USE_POST_LINK: Running pass: InstCombinePass
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; SAMPLE_USE: Running pass: SampleProfileLoaderPass
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; SAMPLE_USE_O: Running pass: PGOIndirectCallPromotion
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; SAMPLE_USE_POST_LINK-NOT: Running pass: GlobalOptPass
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; SAMPLE_USE_POST_LINK: Running pass: PGOIndirectCallPromotion
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; SAMPLE_USE_PRE_LINK-NOT: Running pass: PGOIndirectCallPromotion
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; SAMPLE_GEN: Running pass: AddDiscriminatorsPass
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; SPLIT: Running pass: HotColdSplittingPass
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define void @foo() {
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ret void
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}
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