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| author | Vedant Kumar <vsk@apple.com> | 2018-08-21 23:43:08 +0000 |
|---|---|---|
| committer | Vedant Kumar <vsk@apple.com> | 2018-08-21 23:43:08 +0000 |
| commit | 30406fd7894e57e2cda9401fad59cc7e8c655e6e (patch) | |
| tree | 976022380935b325a859b4d722f65f467c04f8db /llvm/test/Transforms/CodeGenPrepare/X86 | |
| parent | 8d652b756e33b6deb4e469ac7494d0967a22aab7 (diff) | |
| download | bcm5719-llvm-30406fd7894e57e2cda9401fad59cc7e8c655e6e.tar.gz bcm5719-llvm-30406fd7894e57e2cda9401fad59cc7e8c655e6e.zip | |
[CodeGenPrepare] Clean up dbg.value use-before-def as late as possible
CodeGenPrepare has a strategy for moving dbg.values so that a value's
definition always dominates its debug users. This cleanup was happening
too early (before certain CGP transforms were run), resulting in some
dbg.value use-before-def errors.
Perform this cleanup as late as possible to avoid use-before-def.
llvm-svn: 340370
Diffstat (limited to 'llvm/test/Transforms/CodeGenPrepare/X86')
| -rw-r--r-- | llvm/test/Transforms/CodeGenPrepare/X86/select.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/test/Transforms/CodeGenPrepare/X86/select.ll b/llvm/test/Transforms/CodeGenPrepare/X86/select.ll index 9abb2861595..2c81de9bee8 100644 --- a/llvm/test/Transforms/CodeGenPrepare/X86/select.ll +++ b/llvm/test/Transforms/CodeGenPrepare/X86/select.ll @@ -38,12 +38,12 @@ define float @fdiv_true_sink(float %a, float %b) { ; ; DEBUG-LABEL: @fdiv_true_sink( ; DEBUG-NEXT: entry: -; DEBUG-NEXT: call void @llvm.dbg.value(metadata float [[DIV:%[^,]+]] ; DEBUG-NEXT: [[CMP:%.*]] = fcmp ogt float [[A:%.*]], 1.000000e+00 ; DEBUG-NEXT: call void @llvm.dbg.value(metadata i1 [[CMP]] ; DEBUG-NEXT: br i1 [[CMP]], label [[SELECT_TRUE_SINK:%.*]], label [[SELECT_END:%[^,]+]] ; DEBUG: select.true.sink: -; DEBUG-NEXT: [[DIV]] = fdiv float [[A]], [[B:%.*]] +; DEBUG-NEXT: [[DIV:%.*]] = fdiv float [[A]], [[B:%.*]] +; DEBUG-NEXT: call void @llvm.dbg.value(metadata float [[DIV]] ; DEBUG-NEXT: br label [[SELECT_END]] ; DEBUG: select.end: ; DEBUG-NEXT: [[SEL:%.*]] = phi float [ [[DIV]], [[SELECT_TRUE_SINK]] ], [ 2.000000e+00, [[ENTRY:%.*]] ] |
