diff options
Diffstat (limited to 'test/CodeGen/ARM/ldstrex-m.ll')
-rw-r--r-- | test/CodeGen/ARM/ldstrex-m.ll | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/ldstrex-m.ll b/test/CodeGen/ARM/ldstrex-m.ll new file mode 100644 index 0000000..b50699f --- /dev/null +++ b/test/CodeGen/ARM/ldstrex-m.ll @@ -0,0 +1,59 @@ +; RUN: llc < %s -mtriple=thumbv7m-none-eabi -mcpu=cortex-m4 | FileCheck %s + +; CHECK-LABEL: f0: +; CHECK-NOT: ldrexd +define i64 @f0(i64* %p) nounwind readonly { +entry: + %0 = load atomic i64* %p seq_cst, align 8 + ret i64 %0 +} + +; CHECK-LABEL: f1: +; CHECK-NOT: strexd +define void @f1(i64* %p) nounwind readonly { +entry: + store atomic i64 0, i64* %p seq_cst, align 8 + ret void +} + +; CHECK-LABEL: f2: +; CHECK-NOT: ldrexd +; CHECK-NOT: strexd +define i64 @f2(i64* %p) nounwind readonly { +entry: + %0 = atomicrmw add i64* %p, i64 1 seq_cst + ret i64 %0 +} + +; CHECK-LABEL: f3: +; CHECK: ldr +define i32 @f3(i32* %p) nounwind readonly { +entry: + %0 = load atomic i32* %p seq_cst, align 4 + ret i32 %0 +} + +; CHECK-LABEL: f4: +; CHECK: ldrb +define i8 @f4(i8* %p) nounwind readonly { +entry: + %0 = load atomic i8* %p seq_cst, align 4 + ret i8 %0 +} + +; CHECK-LABEL: f5: +; CHECK: str +define void @f5(i32* %p) nounwind readonly { +entry: + store atomic i32 0, i32* %p seq_cst, align 4 + ret void +} + +; CHECK-LABEL: f6: +; CHECK: ldrex +; CHECK: strex +define i32 @f6(i32* %p) nounwind readonly { +entry: + %0 = atomicrmw add i32* %p, i32 1 seq_cst + ret i32 %0 +} |