diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2011-01-07 19:35:30 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2011-01-07 19:35:30 +0000 |
| commit | a5e1362f968568d66d76ddcdcff4ab98e203a48c (patch) | |
| tree | 53e266c315432b49be8ad6f3a2d2a5873265ab53 /test/CodeGen/X86/memcpy-2.ll | |
| parent | 1434f66b2e132a707e2c8ccb3350ea13fb5aa051 (diff) | |
Revert r122955. It seems using movups to lower memcpy can cause massive regression (even on Nehalem) in edge cases. I also didn't see any real performance benefit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123015 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/memcpy-2.ll')
| -rw-r--r-- | test/CodeGen/X86/memcpy-2.ll | 58 |
1 files changed, 49 insertions, 9 deletions
diff --git a/test/CodeGen/X86/memcpy-2.ll b/test/CodeGen/X86/memcpy-2.ll index 9078e4ba53..17cd8e868a 100644 --- a/test/CodeGen/X86/memcpy-2.ll +++ b/test/CodeGen/X86/memcpy-2.ll @@ -1,4 +1,5 @@ ; RUN: llc < %s -mattr=+sse2 -mtriple=i686-apple-darwin -mcpu=core2 | FileCheck %s -check-prefix=SSE2 +; RUN: llc < %s -mattr=+sse,-sse2 -mtriple=i686-apple-darwin -mcpu=core2 | FileCheck %s -check-prefix=SSE1 ; RUN: llc < %s -mattr=-sse -mtriple=i686-apple-darwin -mcpu=core2 | FileCheck %s -check-prefix=NOSSE ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=core2 | FileCheck %s -check-prefix=X86-64 @@ -14,6 +15,13 @@ entry: ; SSE2: movl $0 ; SSE2: movl $0 +; SSE1: t1: +; SSE1: movaps _.str, %xmm0 +; SSE1: movaps %xmm0 +; SSE1: movb $0 +; SSE1: movl $0 +; SSE1: movl $0 + ; NOSSE: t1: ; NOSSE: movb $0 ; NOSSE: movl $0 @@ -43,6 +51,10 @@ entry: ; SSE2: movaps (%eax), %xmm0 ; SSE2: movaps %xmm0, (%eax) +; SSE1: t2: +; SSE1: movaps (%eax), %xmm0 +; SSE1: movaps %xmm0, (%eax) + ; NOSSE: t2: ; NOSSE: movl ; NOSSE: movl @@ -67,8 +79,22 @@ entry: define void @t3(%struct.s0* nocapture %a, %struct.s0* nocapture %b) nounwind ssp { entry: ; SSE2: t3: -; SSE2: movups (%eax), %xmm0 -; SSE2: movups %xmm0, (%eax) +; SSE2: movsd (%eax), %xmm0 +; SSE2: movsd 8(%eax), %xmm1 +; SSE2: movsd %xmm1, 8(%eax) +; SSE2: movsd %xmm0, (%eax) + +; SSE1: t3: +; SSE1: movl +; SSE1: movl +; SSE1: movl +; SSE1: movl +; SSE1: movl +; SSE1: movl +; SSE1: movl +; SSE1: movl +; SSE1: movl +; SSE1: movl ; NOSSE: t3: ; NOSSE: movl @@ -83,8 +109,10 @@ entry: ; NOSSE: movl ; X86-64: t3: -; X86-64: movups (%rsi), %xmm0 -; X86-64: movups %xmm0, (%rdi) +; X86-64: movq (%rsi), %rax +; X86-64: movq 8(%rsi), %rcx +; X86-64: movq %rcx, 8(%rdi) +; X86-64: movq %rax, (%rdi) %tmp2 = bitcast %struct.s0* %a to i8* ; <i8*> [#uses=1] %tmp3 = bitcast %struct.s0* %b to i8* ; <i8*> [#uses=1] tail call void @llvm.memcpy.i32(i8* %tmp2, i8* %tmp3, i32 16, i32 8) @@ -94,12 +122,24 @@ entry: define void @t4() nounwind { entry: ; SSE2: t4: -; SSE2: movups _.str2, %xmm0 -; SSE2: movaps %xmm0, (%esp) -; SSE2: movw $120, 28(%esp) +; SSE2: movw $120 +; SSE2: movl $2021161080 +; SSE2: movl $2021161080 ; SSE2: movl $2021161080 ; SSE2: movl $2021161080 ; SSE2: movl $2021161080 +; SSE2: movl $2021161080 +; SSE2: movl $2021161080 + +; SSE1: t4: +; SSE1: movw $120 +; SSE1: movl $2021161080 +; SSE1: movl $2021161080 +; SSE1: movl $2021161080 +; SSE1: movl $2021161080 +; SSE1: movl $2021161080 +; SSE1: movl $2021161080 +; SSE1: movl $2021161080 ; NOSSE: t4: ; NOSSE: movw $120 @@ -114,8 +154,8 @@ entry: ; X86-64: t4: ; X86-64: movabsq $8680820740569200760, %rax ; X86-64: movq %rax -; X86-64: movups _.str2(%rip), %xmm0 -; X86-64: movaps %xmm0, -40(%rsp) +; X86-64: movq %rax +; X86-64: movq %rax ; X86-64: movw $120 ; X86-64: movl $2021161080 %tmp1 = alloca [30 x i8] |