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| author | Florian Hahn <florian.hahn@arm.com> | 2017-11-28 09:32:25 +0000 |
|---|---|---|
| committer | Florian Hahn <florian.hahn@arm.com> | 2017-11-28 09:32:25 +0000 |
| commit | 25ea91a838a0ce2cc92fefb91694df99a15f611c (patch) | |
| tree | 4778183bab3feb6eae4006d8d8ae1a935f64ffeb /llvm/test/Transforms/MergeFunc | |
| parent | 1bb272bc747a11f1330caabf9c6262f66191ea0c (diff) | |
| download | bcm5719-llvm-25ea91a838a0ce2cc92fefb91694df99a15f611c.tar.gz bcm5719-llvm-25ea91a838a0ce2cc92fefb91694df99a15f611c.zip | |
[TailRecursionElimination] Skip debug intrinsics.
Summary:
I think we do not need to analyze debug intrinsics here, as they should
not impact codegen. This has 2 benefits: 1) slightly less work to do and
2) avoiding generating optimization remarks for converting calls to
debug intrinsics to tail calls, which are not really helpful for users.
Based on work by Sander de Smalen.
Reviewers: davide, trentxintong, aprantl
Reviewed By: aprantl
Subscribers: llvm-commits, JDevlieghere
Tags: #debug-info
Differential Revision: https://reviews.llvm.org/D40440
llvm-svn: 319158
Diffstat (limited to 'llvm/test/Transforms/MergeFunc')
| -rw-r--r-- | llvm/test/Transforms/MergeFunc/mergefunc-preserve-debug-info.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/test/Transforms/MergeFunc/mergefunc-preserve-debug-info.ll b/llvm/test/Transforms/MergeFunc/mergefunc-preserve-debug-info.ll index d24c7a7c48d..02eb511230b 100644 --- a/llvm/test/Transforms/MergeFunc/mergefunc-preserve-debug-info.ll +++ b/llvm/test/Transforms/MergeFunc/mergefunc-preserve-debug-info.ll @@ -96,8 +96,8 @@ define i32 @maxB(i32 %x, i32 %y) !dbg !34 { ; OPTIMIZATION_LEVEL_2: define i32 @maxB(i32 %x, i32 %y) ; OPTIMIZATION_LEVEL_2-NEXT: entry: -; OPTIMIZATION_LEVEL_2-NEXT: tail call void @llvm.dbg.value(metadata i32 %x, metadata !{{[0-9]+}}, metadata !DIExpression()), !dbg !{{[0-9]+}} -; OPTIMIZATION_LEVEL_2-NEXT: tail call void @llvm.dbg.value(metadata i32 %y, metadata !{{[0-9]+}}, metadata !DIExpression()), !dbg !{{[0-9]+}} +; OPTIMIZATION_LEVEL_2-NEXT: call void @llvm.dbg.value(metadata i32 %x, metadata !{{[0-9]+}}, metadata !DIExpression()), !dbg !{{[0-9]+}} +; OPTIMIZATION_LEVEL_2-NEXT: call void @llvm.dbg.value(metadata i32 %y, metadata !{{[0-9]+}}, metadata !DIExpression()), !dbg !{{[0-9]+}} ; OPTIMIZATION_LEVEL_2-NEXT: %0 = tail call i32 @maxA(i32 %x, i32 %y) #{{[0-9]+}}, !dbg !{{[0-9]+}} ; OPTIMIZATION_LEVEL_2-NEXT: ret i32 %0, !dbg !{{[0-9]+}} ; OPTIMIZATION_LEVEL_2-NEXT: } |
