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| author | Eric Christopher <echristo@gmail.com> | 2013-01-11 18:12:39 +0000 |
|---|---|---|
| committer | Eric Christopher <echristo@gmail.com> | 2013-01-11 18:12:39 +0000 |
| commit | 0cb6fd930e1d9b428fbed3244dd971439801b6bb (patch) | |
| tree | 63b2fa08c83a69c2d3283ad2fc1e03fba9da4ca0 /llvm/test/CodeGen/Generic | |
| parent | c0e8a85ea8449d2deb9b2508e00ef2610d5bc35a (diff) | |
| download | bcm5719-llvm-0cb6fd930e1d9b428fbed3244dd971439801b6bb.tar.gz bcm5719-llvm-0cb6fd930e1d9b428fbed3244dd971439801b6bb.zip | |
For inline asm:
- recognize string "{memory}" in the MI generation
- mark as mayload/maystore when there's a memory clobber constraint.
PR14859.
Patch by Krzysztof Parzyszek
llvm-svn: 172228
Diffstat (limited to 'llvm/test/CodeGen/Generic')
| -rw-r--r-- | llvm/test/CodeGen/Generic/inline-asm-mem-clobber.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Generic/inline-asm-mem-clobber.ll b/llvm/test/CodeGen/Generic/inline-asm-mem-clobber.ll new file mode 100644 index 00000000000..e523d031dc6 --- /dev/null +++ b/llvm/test/CodeGen/Generic/inline-asm-mem-clobber.ll @@ -0,0 +1,21 @@ +; RUN: llc -O2 < %s | FileCheck %s + +@G = common global i32 0, align 4 + +define i32 @foo(i8* %p) nounwind uwtable { +entry: + %p.addr = alloca i8*, align 8 + %rv = alloca i32, align 4 + store i8* %p, i8** %p.addr, align 8 + store i32 0, i32* @G, align 4 + %0 = load i8** %p.addr, align 8 +; CHECK: blah + %1 = call i32 asm "blah", "=r,r,~{memory}"(i8* %0) nounwind +; CHECK: @G + store i32 %1, i32* %rv, align 4 + %2 = load i32* %rv, align 4 + %3 = load i32* @G, align 4 + %add = add nsw i32 %2, %3 + ret i32 %add +} + |
