llvm/test/CodeGen/X86/avx-sext.ll
Elena Demikhovsky 52981c4b60 I optimized the following patterns:
sext <4 x i1> to <4 x i64>
 sext <4 x i8> to <4 x i64>
 sext <4 x i16> to <4 x i64>
 
I'm running Combine on SIGN_EXTEND_IN_REG and revert SEXT patterns:
 (sext_in_reg (v4i64 anyext (v4i32 x )), ExtraVT) -> (v4i64 sext (v4i32 sext_in_reg (v4i32 x , ExtraVT)))
 
 The sext_in_reg (v4i32 x) may be lowered to shl+sar operations.
 The "sar" does not exist on 64-bit operation, so lowering sext_in_reg (v4i64 x) has no vector solution.

I also added a cost of this operations to the AVX costs table.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175619 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-20 12:42:54 +00:00

168 lines
3.4 KiB
LLVM
Executable File

; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7-avx | FileCheck %s -check-prefix=AVX
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=core2 | FileCheck %s -check-prefix=SSSE3
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=pentium4 | FileCheck %s -check-prefix=SSE2
define <8 x i32> @sext_8i16_to_8i32(<8 x i16> %A) nounwind uwtable readnone ssp {
; AVX: sext_8i16_to_8i32
; AVX: vpmovsxwd
%B = sext <8 x i16> %A to <8 x i32>
ret <8 x i32>%B
}
define <4 x i64> @sext_4i32_to_4i64(<4 x i32> %A) nounwind uwtable readnone ssp {
; AVX: sext_4i32_to_4i64
; AVX: vpmovsxdq
%B = sext <4 x i32> %A to <4 x i64>
ret <4 x i64>%B
}
; AVX: load_sext_test1
; AVX: vpmovsxwd (%r{{[^,]*}}), %xmm{{.*}}
; AVX: ret
; SSSE3: load_sext_test1
; SSSE3: movq
; SSSE3: punpcklwd %xmm{{.*}}, %xmm{{.*}}
; SSSE3: psrad $16
; SSSE3: ret
; SSE2: load_sext_test1
; SSE2: movq
; SSE2: punpcklwd %xmm{{.*}}, %xmm{{.*}}
; SSE2: psrad $16
; SSE2: ret
define <4 x i32> @load_sext_test1(<4 x i16> *%ptr) {
%X = load <4 x i16>* %ptr
%Y = sext <4 x i16> %X to <4 x i32>
ret <4 x i32>%Y
}
; AVX: load_sext_test2
; AVX: vpmovsxbd (%r{{[^,]*}}), %xmm{{.*}}
; AVX: ret
; SSSE3: load_sext_test2
; SSSE3: movd
; SSSE3: pshufb
; SSSE3: psrad $24
; SSSE3: ret
; SSE2: load_sext_test2
; SSE2: movl
; SSE2: psrad $24
; SSE2: ret
define <4 x i32> @load_sext_test2(<4 x i8> *%ptr) {
%X = load <4 x i8>* %ptr
%Y = sext <4 x i8> %X to <4 x i32>
ret <4 x i32>%Y
}
; AVX: load_sext_test3
; AVX: vpmovsxbq (%r{{[^,]*}}), %xmm{{.*}}
; AVX: ret
; SSSE3: load_sext_test3
; SSSE3: movsbq
; SSSE3: movsbq
; SSSE3: punpcklqdq
; SSSE3: ret
; SSE2: load_sext_test3
; SSE2: movsbq
; SSE2: movsbq
; SSE2: punpcklqdq
; SSE2: ret
define <2 x i64> @load_sext_test3(<2 x i8> *%ptr) {
%X = load <2 x i8>* %ptr
%Y = sext <2 x i8> %X to <2 x i64>
ret <2 x i64>%Y
}
; AVX: load_sext_test4
; AVX: vpmovsxwq (%r{{[^,]*}}), %xmm{{.*}}
; AVX: ret
; SSSE3: load_sext_test4
; SSSE3: movswq
; SSSE3: movswq
; SSSE3: punpcklqdq
; SSSE3: ret
; SSE2: load_sext_test4
; SSE2: movswq
; SSE2: movswq
; SSE2: punpcklqdq
; SSE2: ret
define <2 x i64> @load_sext_test4(<2 x i16> *%ptr) {
%X = load <2 x i16>* %ptr
%Y = sext <2 x i16> %X to <2 x i64>
ret <2 x i64>%Y
}
; AVX: load_sext_test5
; AVX: vpmovsxdq (%r{{[^,]*}}), %xmm{{.*}}
; AVX: ret
; SSSE3: load_sext_test5
; SSSE3: movslq
; SSSE3: movslq
; SSSE3: punpcklqdq
; SSSE3: ret
; SSE2: load_sext_test5
; SSE2: movslq
; SSE2: movslq
; SSE2: punpcklqdq
; SSE2: ret
define <2 x i64> @load_sext_test5(<2 x i32> *%ptr) {
%X = load <2 x i32>* %ptr
%Y = sext <2 x i32> %X to <2 x i64>
ret <2 x i64>%Y
}
; AVX: load_sext_test6
; AVX: vpmovsxbw (%r{{[^,]*}}), %xmm{{.*}}
; AVX: ret
; SSSE3: load_sext_test6
; SSSE3: movq
; SSSE3: punpcklbw
; SSSE3: psraw $8
; SSSE3: ret
; SSE2: load_sext_test6
; SSE2: movq
; SSE2: punpcklbw
; SSE2: psraw $8
; SSE2: ret
define <8 x i16> @load_sext_test6(<8 x i8> *%ptr) {
%X = load <8 x i8>* %ptr
%Y = sext <8 x i8> %X to <8 x i16>
ret <8 x i16>%Y
}
; AVX: sext_4i1_to_4i64
; AVX: vpslld $31
; AVX: vpsrad $31
; AVX: vpmovsxdq
; AVX: vpmovsxdq
; AVX: ret
define <4 x i64> @sext_4i1_to_4i64(<4 x i1> %mask) {
%extmask = sext <4 x i1> %mask to <4 x i64>
ret <4 x i64> %extmask
}
; AVX: sext_4i8_to_4i64
; AVX: vpslld $24
; AVX: vpsrad $24
; AVX: vpmovsxdq
; AVX: vpmovsxdq
; AVX: ret
define <4 x i64> @sext_4i8_to_4i64(<4 x i8> %mask) {
%extmask = sext <4 x i8> %mask to <4 x i64>
ret <4 x i64> %extmask
}