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In 64-bit mode, use i64 to lower memcpy / memset instead of f64.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100137 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2010-04-01 20:27:45 +00:00
parent 24c20e2435
commit 3ea97550e3
3 changed files with 26 additions and 9 deletions

1
lib/Target/X86/X86ISelLowering.cpp

@ -1097,6 +1097,7 @@ X86TargetLowering::getOptimalMemOpType(uint64_t Size,
return MVT::v4f32;
} else if (SafeToUseFP &&
Size >= 8 &&
!Subtarget->is64Bit() &&
Subtarget->getStackAlignment() >= 8 &&
Subtarget->hasSSE2())
return MVT::f64;

17
test/CodeGen/X86/memcpy-2.ll

@ -1,6 +1,7 @@
; 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
%struct.ParmT = type { [25 x i8], i8, i8* }
@.str12 = internal constant [25 x i8] c"image\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00" ; <[25 x i8]*> [#uses=1]
@ -29,6 +30,12 @@ entry:
; NOSSE: movl $0
; NOSSE: movl $101
; NOSSE: movl $1734438249
; X86-64: t1:
; X86-64: movaps _.str12(%rip), %xmm0
; X86-64: movaps %xmm0
; X86-64: movb $0
; X86-64: movq $0
%parms.i = alloca [13 x %struct.ParmT] ; <[13 x %struct.ParmT]*> [#uses=1]
%parms1.i = getelementptr [13 x %struct.ParmT]* %parms.i, i32 0, i32 0, i32 0, i32 0 ; <i8*> [#uses=1]
call void @llvm.memcpy.i32( i8* %parms1.i, i8* getelementptr ([25 x i8]* @.str12, i32 0, i32 0), i32 25, i32 1 ) nounwind
@ -59,6 +66,10 @@ entry:
; NOSSE: movl
; NOSSE: movl
; NOSSE: movl
; X86-64: t2:
; X86-64: movaps (%rsi), %xmm0
; X86-64: movaps %xmm0, (%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 16)
@ -96,6 +107,12 @@ entry:
; NOSSE: movl
; NOSSE: movl
; NOSSE: movl
; X86-64: t3:
; 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)

17
test/CodeGen/X86/unaligned-load.ll

@ -1,3 +1,4 @@
; RUN: llc < %s -mtriple=i386-apple-darwin10.0 -mcpu=core2 -relocation-model=dynamic-no-pic --asm-verbose=0 | FileCheck -check-prefix=I386 %s
; RUN: llc < %s -mtriple=x86_64-apple-darwin10.0 -mcpu=core2 -relocation-model=dynamic-no-pic --asm-verbose=0 | FileCheck -check-prefix=CORE2 %s
; RUN: llc < %s -mtriple=x86_64-apple-darwin10.0 -mcpu=corei7 -relocation-model=dynamic-no-pic --asm-verbose=0 | FileCheck -check-prefix=COREI7 %s
@ -12,9 +13,13 @@ entry:
bb:
%String2Loc9 = getelementptr inbounds [31 x i8]* %String2Loc, i64 0, i64 0
call void @llvm.memcpy.i64(i8* %String2Loc9, i8* getelementptr inbounds ([31 x i8]* @.str3, i64 0, i64 0), i64 31, i32 1)
; CORE2: movsd _.str3+16
; CORE2: movsd _.str3+8
; CORE2: movsd _.str3
; I386: movsd _.str3+16
; I386: movsd _.str3+8
; I386: movsd _.str3
; CORE2: movabsq
; CORE2: movabsq
; CORE2: movabsq
; COREI7: movups _.str3
br label %bb
@ -30,9 +35,3 @@ declare void @llvm.memcpy.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind
; CORE2-NEXT: .asciz "DHRYSTONE PROGRAM, SOME STRING"
; CORE2: .align 3
; CORE2-NEXT: _.str3:
; COREI7: .align 3
; COREI7-NEXT: _.str1:
; COREI7-NEXT: .asciz "DHRYSTONE PROGRAM, SOME STRING"
; COREI7: .align 3
; COREI7-NEXT: _.str3: