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| author | Eli Friedman <eli.friedman@gmail.com> | 2013-09-09 22:00:13 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2013-09-09 22:00:13 +0000 |
| commit | b1c54930cb1450534d6f3f0ebd81eb1e042a3246 (patch) | |
| tree | 4b76f9c4ee04b2659a7b26b740d407a8271a73dd /test/Transforms | |
| parent | 1d5ad97531a0213f06cc526a0c8ea7b2150f6acc (diff) | |
| download | llvm-b1c54930cb1450534d6f3f0ebd81eb1e042a3246.tar.gz llvm-b1c54930cb1450534d6f3f0ebd81eb1e042a3246.tar.bz2 llvm-b1c54930cb1450534d6f3f0ebd81eb1e042a3246.tar.xz | |
Don't shrink atomic ops to bool in GlobalOpt.
LLVM IR doesn't currently allow atomic bool load/store operations, and the
transformation is dubious anyway because it isn't profitable on all platforms.
PR17163.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190357 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/GlobalOpt/atomic.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/Transforms/GlobalOpt/atomic.ll b/test/Transforms/GlobalOpt/atomic.ll index 4c3f4395a0..ac05bfd68d 100644 --- a/test/Transforms/GlobalOpt/atomic.ll +++ b/test/Transforms/GlobalOpt/atomic.ll @@ -1,10 +1,25 @@ ; RUN: opt -globalopt < %s -S -o - | FileCheck %s @GV1 = internal global i64 1 +@GV2 = internal global i32 0 + ; CHECK: @GV1 = internal unnamed_addr constant i64 1 +; CHECK: @GV2 = internal unnamed_addr global i32 0 define void @test1() { entry: %0 = load atomic i8* bitcast (i64* @GV1 to i8*) acquire, align 8 ret void } + +; PR17163 +define void @test2a() { +entry: + store atomic i32 10, i32* @GV2 seq_cst, align 4 + ret void +} +define i32 @test2b() { +entry: + %atomic-load = load atomic i32* @GV2 seq_cst, align 4 + ret i32 %atomic-load +} |