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authorVedant Kumar <vsk@apple.com>2018-08-21 23:43:08 +0000
committerVedant Kumar <vsk@apple.com>2018-08-21 23:43:08 +0000
commit30406fd7894e57e2cda9401fad59cc7e8c655e6e (patch)
tree976022380935b325a859b4d722f65f467c04f8db /llvm/test/Transforms/CodeGenPrepare/X86
parent8d652b756e33b6deb4e469ac7494d0967a22aab7 (diff)
downloadbcm5719-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.ll4
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:%.*]] ]
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