diff options
Diffstat (limited to 'test/CodeGen/ARM64/2012-05-07-MemcpyAlignBug.ll')
| -rw-r--r-- | test/CodeGen/ARM64/2012-05-07-MemcpyAlignBug.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test/CodeGen/ARM64/2012-05-07-MemcpyAlignBug.ll b/test/CodeGen/ARM64/2012-05-07-MemcpyAlignBug.ll new file mode 100644 index 0000000..d59b0d0 --- /dev/null +++ b/test/CodeGen/ARM64/2012-05-07-MemcpyAlignBug.ll @@ -0,0 +1,21 @@ +; RUN: llc < %s -march arm64 -mcpu=cyclone | FileCheck %s +; <rdar://problem/11294426> + +@b = private unnamed_addr constant [3 x i32] [i32 1768775988, i32 1685481784, i32 1836253201], align 4 + +; The important thing for this test is that we need an unaligned load of `l_b' +; ("ldr w2, [x1, #8]" in this case). + +; CHECK: adrp x[[PAGE:[0-9]+]], {{l_b@PAGE|.Lb}} +; CHECK: add x[[ADDR:[0-9]+]], x[[PAGE]], {{l_b@PAGEOFF|:lo12:.Lb}} +; CHECK-NEXT: ldr [[VAL:w[0-9]+]], [x[[ADDR]], #8] +; CHECK-NEXT: str [[VAL]], [x0, #8] +; CHECK-NEXT: ldr [[VAL2:x[0-9]+]], [x[[ADDR]]] +; CHECK-NEXT: str [[VAL2]], [x0] + +define void @foo(i8* %a) { + call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast ([3 x i32]* @b to i8*), i64 12, i32 4, i1 false) + ret void +} + +declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind |