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[avx] Adjust the VINSERTF128rm pattern to allow for unaligned loads.

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This results in things such as

	vmovups	16(%rdi), %xmm0
	vinsertf128	$1, %xmm0, %ymm0, %ymm0

to be combined to

    vinsertf128	$1, 16(%rdi), %ymm0, %ymm0

rdar://11076953

llvm-svn: 153092
This commit is contained in:
Chad Rosier 2012-03-20 17:08:51 +00:00
parent d20ed770e5
commit 143f33dc92
2 changed files with 16 additions and 3 deletions
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6
lib/Target/X86/X86InstrSSE.td
View File

@ -7759,15 +7759,15 @@ def : Pat<(vinsertf128_insert:$ins (v16i16 VR256:$src1), (v8i16 VR128:$src2),
(VINSERTF128rr VR256:$src1, VR128:$src2,
(INSERT_get_vinsertf128_imm VR256:$ins))>;
def : Pat<(vinsertf128_insert:$ins (v8f32 VR256:$src1), (alignedloadv4f32 addr:$src2),
def : Pat<(vinsertf128_insert:$ins (v8f32 VR256:$src1), (loadv4f32 addr:$src2),
(i32 imm)),
(VINSERTF128rm VR256:$src1, addr:$src2,
(INSERT_get_vinsertf128_imm VR256:$ins))>;
def : Pat<(vinsertf128_insert:$ins (v4f64 VR256:$src1), (alignedloadv2f64 addr:$src2),
def : Pat<(vinsertf128_insert:$ins (v4f64 VR256:$src1), (loadv2f64 addr:$src2),
(i32 imm)),
(VINSERTF128rm VR256:$src1, addr:$src2,
(INSERT_get_vinsertf128_imm VR256:$ins))>;
def : Pat<(vinsertf128_insert:$ins (v4i64 VR256:$src1), (alignedloadv2i64 addr:$src2),
def : Pat<(vinsertf128_insert:$ins (v4i64 VR256:$src1), (loadv2i64 addr:$src2),
(i32 imm)),
(VINSERTF128rm VR256:$src1, addr:$src2,
(INSERT_get_vinsertf128_imm VR256:$ins))>;

13
test/CodeGen/X86/avx-vinsertf128.ll
View File

@ -116,3 +116,16 @@ entry:
%2 = tail call <8 x float> @llvm.x86.avx.vinsertf128.ps.256(<8 x float> undef, <4 x float> %1, i8 1)
ret <8 x float> %2
}
rdar://11076953
; CHECK: vinsertf128_ucombine
define <8 x float> @vinsertf128_ucombine(float* nocapture %f) nounwind uwtable readonly ssp {
; CHECK-NOT: vmovups
; CHECK: vinsertf128
entry:
%add.ptr = getelementptr inbounds float* %f, i64 4
%0 = bitcast float* %add.ptr to <4 x float>*
%1 = load <4 x float>* %0, align 8
%2 = tail call <8 x float> @llvm.x86.avx.vinsertf128.ps.256(<8 x float> undef, <4 x float> %1, i8 1)
ret <8 x float> %2
}