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The BSWAP of vector types is quite efficiently implemented using vector shuffles on SSE/AVX targets, we should reflect the typical cost of this to encourage vectorization. Differential Revision: http://reviews.llvm.org/D21521 llvm-svn: 273217
83 lines
4.3 KiB
LLVM
83 lines
4.3 KiB
LLVM
; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=pentium4 -cost-model -analyze | FileCheck %s -check-prefix=CHECK -check-prefix=SSE2
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; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7 -cost-model -analyze | FileCheck %s -check-prefix=CHECK -check-prefix=SSE42
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; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7-avx -cost-model -analyze | FileCheck %s -check-prefix=CHECK -check-prefix=AVX -check-prefix=AVX1
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; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=core-avx2 -cost-model -analyze | FileCheck %s -check-prefix=CHECK -check-prefix=AVX -check-prefix=AVX2
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; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=bdver2 -cost-model -analyze | FileCheck %s -check-prefix=CHECK -check-prefix=XOP -check-prefix=XOPAVX1
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; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=bdver4 -cost-model -analyze | FileCheck %s -check-prefix=CHECK -check-prefix=XOP -check-prefix=XOPAVX2
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; Verify the cost of vector bswap instructions.
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declare <2 x i64> @llvm.bswap.v2i64(<2 x i64>)
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declare <4 x i32> @llvm.bswap.v4i32(<4 x i32>)
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declare <8 x i16> @llvm.bswap.v8i16(<8 x i16>)
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declare <4 x i64> @llvm.bswap.v4i64(<4 x i64>)
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declare <8 x i32> @llvm.bswap.v8i32(<8 x i32>)
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declare <16 x i16> @llvm.bswap.v16i16(<16 x i16>)
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define <2 x i64> @var_bswap_v2i64(<2 x i64> %a) {
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; CHECK: 'Cost Model Analysis' for function 'var_bswap_v2i64':
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; SSE2: Found an estimated cost of 7 for instruction: %bswap
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; SSE42: Found an estimated cost of 1 for instruction: %bswap
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; AVX: Found an estimated cost of 1 for instruction: %bswap
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; XOP: Found an estimated cost of 1 for instruction: %bswap
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%bswap = call <2 x i64> @llvm.bswap.v2i64(<2 x i64> %a)
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ret <2 x i64> %bswap
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}
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define <4 x i64> @var_bswap_v4i64(<4 x i64> %a) {
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; CHECK: 'Cost Model Analysis' for function 'var_bswap_v4i64':
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; SSE2: Found an estimated cost of 14 for instruction: %bswap
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; SSE42: Found an estimated cost of 2 for instruction: %bswap
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; AVX1: Found an estimated cost of 4 for instruction: %bswap
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; AVX2: Found an estimated cost of 1 for instruction: %bswap
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; XOPAVX1: Found an estimated cost of 4 for instruction: %bswap
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; XOPAVX2: Found an estimated cost of 1 for instruction: %bswap
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%bswap = call <4 x i64> @llvm.bswap.v4i64(<4 x i64> %a)
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ret <4 x i64> %bswap
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}
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define <4 x i32> @var_bswap_v4i32(<4 x i32> %a) {
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; CHECK: 'Cost Model Analysis' for function 'var_bswap_v4i32':
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; SSE2: Found an estimated cost of 7 for instruction: %bswap
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; SSE42: Found an estimated cost of 1 for instruction: %bswap
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; AVX: Found an estimated cost of 1 for instruction: %bswap
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; XOP: Found an estimated cost of 1 for instruction: %bswap
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%bswap = call <4 x i32> @llvm.bswap.v4i32(<4 x i32> %a)
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ret <4 x i32> %bswap
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}
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define <8 x i32> @var_bswap_v8i32(<8 x i32> %a) {
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; CHECK: 'Cost Model Analysis' for function 'var_bswap_v8i32':
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; SSE2: Found an estimated cost of 14 for instruction: %bswap
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; SSE42: Found an estimated cost of 2 for instruction: %bswap
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; AVX1: Found an estimated cost of 4 for instruction: %bswap
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; AVX2: Found an estimated cost of 1 for instruction: %bswap
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; XOPAVX1: Found an estimated cost of 4 for instruction: %bswap
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; XOPAVX2: Found an estimated cost of 1 for instruction: %bswap
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%bswap = call <8 x i32> @llvm.bswap.v8i32(<8 x i32> %a)
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ret <8 x i32> %bswap
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}
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define <8 x i16> @var_bswap_v8i16(<8 x i16> %a) {
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; CHECK: 'Cost Model Analysis' for function 'var_bswap_v8i16':
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; SSE2: Found an estimated cost of 7 for instruction: %bswap
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; SSE42: Found an estimated cost of 1 for instruction: %bswap
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; AVX: Found an estimated cost of 1 for instruction: %bswap
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; XOP: Found an estimated cost of 1 for instruction: %bswap
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%bswap = call <8 x i16> @llvm.bswap.v8i16(<8 x i16> %a)
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ret <8 x i16> %bswap
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}
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define <16 x i16> @var_bswap_v16i16(<16 x i16> %a) {
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; CHECK: 'Cost Model Analysis' for function 'var_bswap_v16i16':
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; SSE2: Found an estimated cost of 14 for instruction: %bswap
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; SSE42: Found an estimated cost of 2 for instruction: %bswap
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; AVX1: Found an estimated cost of 4 for instruction: %bswap
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; AVX2: Found an estimated cost of 1 for instruction: %bswap
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; XOPAVX1: Found an estimated cost of 4 for instruction: %bswap
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; XOPAVX2: Found an estimated cost of 1 for instruction: %bswap
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%bswap = call <16 x i16> @llvm.bswap.v16i16(<16 x i16> %a)
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ret <16 x i16> %bswap
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}
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