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| author | Chris Lattner <sabre@nondot.org> | 2008-11-28 22:51:08 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-11-28 22:51:08 +0000 |
| commit | d3d12ecadd1eb859c4b30b6582e31901a45d6626 (patch) | |
| tree | 7cb165beafc0381624551d998b2fee25b6c25c09 /test/Transforms/DeadStoreElimination | |
| parent | 5425f22fa3f8cbbcbc1a76fc7df2fa251cdc132d (diff) | |
| download | external_llvm-d3d12ecadd1eb859c4b30b6582e31901a45d6626.zip external_llvm-d3d12ecadd1eb859c4b30b6582e31901a45d6626.tar.gz external_llvm-d3d12ecadd1eb859c4b30b6582e31901a45d6626.tar.bz2 | |
Fix PR3141 by ensuring that MemoryDependenceAnalysis::removeInstruction
properly updates the reverse dependency map when it installs updated
dependencies for instructions that depend on the removed instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60222 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/DeadStoreElimination')
| -rw-r--r-- | test/Transforms/DeadStoreElimination/2008-11-28-MemDepUpdate.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/test/Transforms/DeadStoreElimination/2008-11-28-MemDepUpdate.ll b/test/Transforms/DeadStoreElimination/2008-11-28-MemDepUpdate.ll new file mode 100644 index 0000000..0f3350d --- /dev/null +++ b/test/Transforms/DeadStoreElimination/2008-11-28-MemDepUpdate.ll @@ -0,0 +1,16 @@ +; RUN: llvm-as < %s | opt -dse | llvm-dis +; PR3141 + %struct.ada__tags__dispatch_table = type { [1 x i32] } + %struct.f393a00_1__object = type { %struct.ada__tags__dispatch_table*, i8 } + %struct.f393a00_2__windmill = type { %struct.f393a00_1__object, i16 } + +define void @f393a00_2__swap(%struct.f393a00_2__windmill* %a, %struct.f393a00_2__windmill* %b) { +entry: + %t = alloca %struct.f393a00_2__windmill ; <%struct.f393a00_2__windmill*> [#uses=1] + %0 = getelementptr %struct.f393a00_2__windmill* %t, i32 0, i32 0, i32 0 ; <%struct.ada__tags__dispatch_table**> [#uses=1] + %1 = load %struct.ada__tags__dispatch_table** null, align 4 ; <%struct.ada__tags__dispatch_table*> [#uses=1] + %2 = load %struct.ada__tags__dispatch_table** %0, align 8 ; <%struct.ada__tags__dispatch_table*> [#uses=1] + store %struct.ada__tags__dispatch_table* %2, %struct.ada__tags__dispatch_table** null, align 4 + store %struct.ada__tags__dispatch_table* %1, %struct.ada__tags__dispatch_table** null, align 4 + ret void +} |