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| author | Eli Friedman <eli.friedman@gmail.com> | 2010-07-16 00:55:21 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2010-07-16 00:55:21 +0000 |
| commit | eca55afea3018f4f322a4b9bf0a3a45ba6014962 (patch) | |
| tree | 3c358bd86ac105bc7a7e74eb8cd1f554ee5dadfc /clang/test/CodeGen/asm-inout.c | |
| parent | 999daa57c75e3df4a0df7e00fb797411e5507a52 (diff) | |
| download | bcm5719-llvm-eca55afea3018f4f322a4b9bf0a3a45ba6014962.tar.gz bcm5719-llvm-eca55afea3018f4f322a4b9bf0a3a45ba6014962.zip | |
Fix for PR3800: make sure not to evaluate the expression for a read-write
asm operand twice.
llvm-svn: 108489
Diffstat (limited to 'clang/test/CodeGen/asm-inout.c')
| -rw-r--r-- | clang/test/CodeGen/asm-inout.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/clang/test/CodeGen/asm-inout.c b/clang/test/CodeGen/asm-inout.c new file mode 100644 index 00000000000..f04276693e2 --- /dev/null +++ b/clang/test/CodeGen/asm-inout.c @@ -0,0 +1,19 @@ +// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck %s +// PR3800 +int *foo(void); + +// CHECK: @test1 +void test1() { + // CHECK: [[REGCALLRESULT:%[a-zA-Z0-9\.]+]] = call i32* @foo() + // CHECK: call void asm "foobar", "=*m,*m,~{dirflag},~{fpsr},~{flags}"(i32* [[REGCALLRESULT]], i32* [[REGCALLRESULT]]) + asm ("foobar" : "+m"(*foo())); +} + +// CHECK: @test2 +void test2() { + // CHECK: [[REGCALLRESULT:%[a-zA-Z0-9\.]+]] = call i32* @foo() + // CHECK: load i32* [[REGCALLRESULT]] + // CHECK: call i32 asm + // CHECK: store i32 {{%[a-zA-Z0-9\.]+}}, i32* [[REGCALLRESULT]] + asm ("foobar" : "+r"(*foo())); +} |
