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Diffstat (limited to 'test/Transforms/FunctionAttrs/atomic.ll')
| -rw-r--r-- | test/Transforms/FunctionAttrs/atomic.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test/Transforms/FunctionAttrs/atomic.ll b/test/Transforms/FunctionAttrs/atomic.ll new file mode 100644 index 0000000..7c2bff7 --- /dev/null +++ b/test/Transforms/FunctionAttrs/atomic.ll @@ -0,0 +1,21 @@ +; RUN: opt -basicaa -functionattrs -S < %s | FileCheck %s + +; Atomic load/store to local doesn't affect whether a function is +; readnone/readonly. +define i32 @test1(i32 %x) uwtable ssp { +; CHECK: define i32 @test1(i32 %x) uwtable readnone ssp { +entry: + %x.addr = alloca i32, align 4 + store atomic i32 %x, i32* %x.addr seq_cst, align 4 + %r = load atomic i32* %x.addr seq_cst, align 4 + ret i32 %r +} + +; A function with an Acquire load is not readonly. +define i32 @test2(i32* %x) uwtable ssp { +; CHECK: define i32 @test2(i32* nocapture %x) uwtable ssp { +entry: + %r = load atomic i32* %x seq_cst, align 4 + ret i32 %r +} + |
