CodeGen peephole: fold redundant phys reg copies

[oota-llvm.git] / test / CodeGen / X86 / memset.ll

diff --git a/test/CodeGen/X86/memset.ll b/test/CodeGen/X86/memset.ll
index b35f2615d0f694f5016fce5b636e9e07aadfb4f9..96a22e88567510b3f89dad94d5ae49edf8366542 100644 (file)
--- a/test/CodeGen/X86/memset.ll
+++ b/test/CodeGen/X86/memset.ll
@@ -7,7 +7,7 @@
 define void @t() nounwind  {
 entry:
        %up_mvd = alloca [8 x %struct.x]                ; <[8 x %struct.x]*> [#uses=2]
-       %up_mvd116 = getelementptr [8 x %struct.x]* %up_mvd, i32 0, i32 0               ; <%struct.x*> [#uses=1]
+       %up_mvd116 = getelementptr [8 x %struct.x], [8 x %struct.x]* %up_mvd, i32 0, i32 0              ; <%struct.x*> [#uses=1]
        %tmp110117 = bitcast [8 x %struct.x]* %up_mvd to i8*            ; <i8*> [#uses=1]
 
        call void @llvm.memset.p0i8.i64(i8* %tmp110117, i8 0, i64 32, i32 8, i1 false)
@@ -20,15 +20,18 @@ entry:
 ; X86: movl $0,
 ; X86: movl $0,
 ; X86-NOT: movl $0,
+; X86: ret
 
 ; XMM: xorps %xmm{{[0-9]+}}, [[Z:%xmm[0-9]+]]
 ; XMM: movaps [[Z]],
 ; XMM: movaps [[Z]],
 ; XMM-NOT: movaps
+; XMM: ret
 
 ; YMM: vxorps %ymm{{[0-9]+}}, %ymm{{[0-9]+}}, [[Z:%ymm[0-9]+]]
 ; YMM: vmovaps [[Z]],
 ; YMM-NOT: movaps
+; YMM: ret
 
        call void @foo( %struct.x* %up_mvd116 ) nounwind 
        ret void
@@ -37,3 +40,16 @@ entry:
 declare void @foo(%struct.x*)
 
 declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
+
+define void @PR15348(i8* %a) {
+; Ensure that alignment of '0' in an @llvm.memset intrinsic results in
+; unaligned loads and stores.
+; XMM: PR15348
+; XMM: movb $0,
+; XMM: movl $0,
+; XMM: movl $0,
+; XMM: movl $0,
+; XMM: movl $0,
+  call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 17, i32 0, i1 false)
+  ret void
+}