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llvm-6502/test/CodeGen/X86/vector-trunc.ll

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[X86][SSE] Added vector integer truncation tests - based off pr15524 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225137 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-04 17:52:00 +00:00
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -mattr=+sse2 | FileCheck %s --check-prefix=SSE --check-prefix=SSE2
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -mattr=+ssse3 | FileCheck %s --check-prefix=SSE --check-prefix=SSSE3
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -mattr=+sse4.1 | FileCheck %s --check-prefix=SSE --check-prefix=SSE41
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -mattr=+avx | FileCheck %s --check-prefix=AVX --check-prefix=AVX1
[X86][SSE] Added dual vector truncation tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228857 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-11 18:14:35 +00:00
define <4 x i32> @trunc2x2i64(<2 x i64> %a, <2 x i64> %b) {
[x86] Teach the 128-bit vector shuffle lowering routines to take advantage of the existence of a reasonable blend instruction. The 256-bit vector shuffle lowering has leveraged the general technique of decomposed shuffles and blends for quite some time, but this never made it back into the 128-bit code, and there are a large number of patterns where this is substantially better. For example, this removes almost all domain crossing in vector shuffles that involve some blend and some permutation with SSE4.1 and later. See the massive reduction in 'shufps' for integer test cases in this commit. This isn't perfect yet for a few reasons: 1) The v8i16 shuffle lowering continues to plague me. We don't always form an unpack-based blend when that would be better. But the wins pretty drastically outstrip the losses here. 2) The v16i8 shuffle lowering is just a disaster here. I never went and implemented blend support here for some terrible reason. I'll do that next probably. I've not updated it for now. More variations on this technique are coming as well -- we don't shuffle-into-unpack or shuffle-into-palignr, both of which would also be profitable. Note that some test cases grow significantly in the number of instructions, but I expect to actually be faster. We use pshufd+pshufd+blendw instead of a single shufps, but the pshufd's are very likely to pipeline well (two ports on most modern intel chips) and the blend is a *very* fast instruction. The domain switch penalty will essentially always be more than a blend instruction, which is the only increase in tree height. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229350 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:52:02 +00:00
; SSE2-LABEL: trunc2x2i64:
; SSE2: # BB#0: # %entry
[x86] Teach the unpack lowering to try wider element unpacks. This allows it to match still more places where previously we would have to fall back on floating point shuffles or other more complex lowering strategies. I'm hoping to replace some of the hand-rolled unpack matching with this routine is it gets more and more clever. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229463 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-17 02:12:24 +00:00
; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,2,2,3]
; SSE2-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; SSE2-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
[x86] Teach the 128-bit vector shuffle lowering routines to take advantage of the existence of a reasonable blend instruction. The 256-bit vector shuffle lowering has leveraged the general technique of decomposed shuffles and blends for quite some time, but this never made it back into the 128-bit code, and there are a large number of patterns where this is substantially better. For example, this removes almost all domain crossing in vector shuffles that involve some blend and some permutation with SSE4.1 and later. See the massive reduction in 'shufps' for integer test cases in this commit. This isn't perfect yet for a few reasons: 1) The v8i16 shuffle lowering continues to plague me. We don't always form an unpack-based blend when that would be better. But the wins pretty drastically outstrip the losses here. 2) The v16i8 shuffle lowering is just a disaster here. I never went and implemented blend support here for some terrible reason. I'll do that next probably. I've not updated it for now. More variations on this technique are coming as well -- we don't shuffle-into-unpack or shuffle-into-palignr, both of which would also be profitable. Note that some test cases grow significantly in the number of instructions, but I expect to actually be faster. We use pshufd+pshufd+blendw instead of a single shufps, but the pshufd's are very likely to pipeline well (two ports on most modern intel chips) and the blend is a *very* fast instruction. The domain switch penalty will essentially always be more than a blend instruction, which is the only increase in tree height. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229350 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:52:02 +00:00
; SSE2-NEXT: retq
;
; SSSE3-LABEL: trunc2x2i64:
; SSSE3: # BB#0: # %entry
[x86] Teach the unpack lowering to try wider element unpacks. This allows it to match still more places where previously we would have to fall back on floating point shuffles or other more complex lowering strategies. I'm hoping to replace some of the hand-rolled unpack matching with this routine is it gets more and more clever. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229463 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-17 02:12:24 +00:00
; SSSE3-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,2,2,3]
; SSSE3-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; SSSE3-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
[x86] Teach the 128-bit vector shuffle lowering routines to take advantage of the existence of a reasonable blend instruction. The 256-bit vector shuffle lowering has leveraged the general technique of decomposed shuffles and blends for quite some time, but this never made it back into the 128-bit code, and there are a large number of patterns where this is substantially better. For example, this removes almost all domain crossing in vector shuffles that involve some blend and some permutation with SSE4.1 and later. See the massive reduction in 'shufps' for integer test cases in this commit. This isn't perfect yet for a few reasons: 1) The v8i16 shuffle lowering continues to plague me. We don't always form an unpack-based blend when that would be better. But the wins pretty drastically outstrip the losses here. 2) The v16i8 shuffle lowering is just a disaster here. I never went and implemented blend support here for some terrible reason. I'll do that next probably. I've not updated it for now. More variations on this technique are coming as well -- we don't shuffle-into-unpack or shuffle-into-palignr, both of which would also be profitable. Note that some test cases grow significantly in the number of instructions, but I expect to actually be faster. We use pshufd+pshufd+blendw instead of a single shufps, but the pshufd's are very likely to pipeline well (two ports on most modern intel chips) and the blend is a *very* fast instruction. The domain switch penalty will essentially always be more than a blend instruction, which is the only increase in tree height. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229350 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:52:02 +00:00
; SSSE3-NEXT: retq
;
; SSE41-LABEL: trunc2x2i64:
; SSE41: # BB#0: # %entry
; SSE41-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,1,0,2]
; SSE41-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; SSE41-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1,2,3],xmm1[4,5,6,7]
; SSE41-NEXT: retq
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
;
; AVX-LABEL: trunc2x2i64:
; AVX: # BB#0: # %entry
[x86] Teach the 128-bit vector shuffle lowering routines to take advantage of the existence of a reasonable blend instruction. The 256-bit vector shuffle lowering has leveraged the general technique of decomposed shuffles and blends for quite some time, but this never made it back into the 128-bit code, and there are a large number of patterns where this is substantially better. For example, this removes almost all domain crossing in vector shuffles that involve some blend and some permutation with SSE4.1 and later. See the massive reduction in 'shufps' for integer test cases in this commit. This isn't perfect yet for a few reasons: 1) The v8i16 shuffle lowering continues to plague me. We don't always form an unpack-based blend when that would be better. But the wins pretty drastically outstrip the losses here. 2) The v16i8 shuffle lowering is just a disaster here. I never went and implemented blend support here for some terrible reason. I'll do that next probably. I've not updated it for now. More variations on this technique are coming as well -- we don't shuffle-into-unpack or shuffle-into-palignr, both of which would also be profitable. Note that some test cases grow significantly in the number of instructions, but I expect to actually be faster. We use pshufd+pshufd+blendw instead of a single shufps, but the pshufd's are very likely to pipeline well (two ports on most modern intel chips) and the blend is a *very* fast instruction. The domain switch penalty will essentially always be more than a blend instruction, which is the only increase in tree height. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229350 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:52:02 +00:00
; AVX-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[0,1,0,2]
; AVX-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; AVX-NEXT: vpblendw {{.*#+}} xmm0 = xmm0[0,1,2,3],xmm1[4,5,6,7]
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; AVX-NEXT: retq
[X86][SSE] Added dual vector truncation tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228857 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-11 18:14:35 +00:00
entry:
%0 = trunc <2 x i64> %a to <2 x i32>
%1 = trunc <2 x i64> %b to <2 x i32>
%2 = shufflevector <2 x i32> %0, <2 x i32> %1, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
ret <4 x i32> %2
}
[X86][SSE] Added vector integer truncation tests - based off pr15524 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225137 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-04 17:52:00 +00:00
define i64 @trunc2i64(<2 x i64> %inval) {
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; SSE-LABEL: trunc2i64:
; SSE: # BB#0: # %entry
; SSE-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; SSE-NEXT: movd %xmm0, %rax
; SSE-NEXT: retq
;
; AVX-LABEL: trunc2i64:
; AVX: # BB#0: # %entry
; AVX-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; AVX-NEXT: vmovq %xmm0, %rax
; AVX-NEXT: retq
[X86][SSE] Added vector integer truncation tests - based off pr15524 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225137 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-04 17:52:00 +00:00
entry:
%0 = trunc <2 x i64> %inval to <2 x i32>
%1 = bitcast <2 x i32> %0 to i64
ret i64 %1
}
[X86][SSE] Added dual vector truncation tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228857 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-11 18:14:35 +00:00
define <8 x i16> @trunc2x4i32(<4 x i32> %a, <4 x i32> %b) {
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; SSE2-LABEL: trunc2x4i32:
; SSE2: # BB#0: # %entry
; SSE2-NEXT: pshuflw {{.*#+}} xmm1 = xmm1[0,2,2,3,4,5,6,7]
; SSE2-NEXT: pshufhw {{.*#+}} xmm1 = xmm1[0,1,2,3,4,6,6,7]
; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,2,2,3]
; SSE2-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[0,2,2,3,4,5,6,7]
; SSE2-NEXT: pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,6,6,7]
; SSE2-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; SSE2-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
; SSE2-NEXT: retq
;
; SSSE3-LABEL: trunc2x4i32:
; SSSE3: # BB#0: # %entry
; SSSE3-NEXT: movdqa {{.*#+}} xmm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
; SSSE3-NEXT: pshufb %xmm2, %xmm1
; SSSE3-NEXT: pshufb %xmm2, %xmm0
; SSSE3-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
; SSSE3-NEXT: retq
;
; SSE41-LABEL: trunc2x4i32:
; SSE41: # BB#0: # %entry
[x86] Delete still more piles of complex code now that we have a good systematic lowering of v8i16. This required a slight strategy shift to prefer unpack lowerings in more places. While this isn't a cut-and-dry win in every case, it is in the overwhelming majority. There are only a few places where the old lowering would probably be a touch faster, and then only by a small margin. In some cases, this is yet another significant improvement. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229859 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-19 15:21:57 +00:00
; SSE41-NEXT: movdqa {{.*#+}} xmm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
; SSE41-NEXT: pshufb %xmm2, %xmm1
; SSE41-NEXT: pshufb %xmm2, %xmm0
; SSE41-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; SSE41-NEXT: retq
;
; AVX-LABEL: trunc2x4i32:
; AVX: # BB#0: # %entry
[x86] Delete still more piles of complex code now that we have a good systematic lowering of v8i16. This required a slight strategy shift to prefer unpack lowerings in more places. While this isn't a cut-and-dry win in every case, it is in the overwhelming majority. There are only a few places where the old lowering would probably be a touch faster, and then only by a small margin. In some cases, this is yet another significant improvement. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229859 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-19 15:21:57 +00:00
; AVX-NEXT: vmovdqa {{.*#+}} xmm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
; AVX-NEXT: vpshufb %xmm2, %xmm1, %xmm1
; AVX-NEXT: vpshufb %xmm2, %xmm0, %xmm0
; AVX-NEXT: vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; AVX-NEXT: retq
[X86][SSE] Added dual vector truncation tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228857 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-11 18:14:35 +00:00
entry:
%0 = trunc <4 x i32> %a to <4 x i16>
%1 = trunc <4 x i32> %b to <4 x i16>
%2 = shufflevector <4 x i16> %0, <4 x i16> %1, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
ret <8 x i16> %2
}
[X86][SSE] Added vector integer truncation tests - based off pr15524 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225137 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-04 17:52:00 +00:00
; PR15524 http://llvm.org/bugs/show_bug.cgi?id=15524
define i64 @trunc4i32(<4 x i32> %inval) {
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; SSE2-LABEL: trunc4i32:
; SSE2: # BB#0: # %entry
; SSE2-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[0,2,2,3,4,5,6,7]
; SSE2-NEXT: pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,6,6,7]
; SSE2-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; SSE2-NEXT: movd %xmm0, %rax
; SSE2-NEXT: retq
;
[X86][SSE] Added vector integer truncation tests - based off pr15524 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225137 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-04 17:52:00 +00:00
; SSSE3-LABEL: trunc4i32:
; SSSE3: # BB#0: # %entry
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; SSSE3-NEXT: pshufb {{.*#+}} xmm0 = xmm0[0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
; SSSE3-NEXT: movd %xmm0, %rax
; SSSE3-NEXT: retq
;
[X86][SSE] Added vector integer truncation tests - based off pr15524 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225137 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-04 17:52:00 +00:00
; SSE41-LABEL: trunc4i32:
; SSE41: # BB#0: # %entry
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; SSE41-NEXT: pshufb {{.*#+}} xmm0 = xmm0[0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
; SSE41-NEXT: movd %xmm0, %rax
; SSE41-NEXT: retq
;
; AVX-LABEL: trunc4i32:
; AVX: # BB#0: # %entry
; AVX-NEXT: vpshufb {{.*#+}} xmm0 = xmm0[0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
; AVX-NEXT: vmovq %xmm0, %rax
; AVX-NEXT: retq
[X86][SSE] Added vector integer truncation tests - based off pr15524 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225137 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-04 17:52:00 +00:00
entry:
%0 = trunc <4 x i32> %inval to <4 x i16>
%1 = bitcast <4 x i16> %0 to i64
ret i64 %1
}
[X86][SSE] Added dual vector truncation tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228857 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-11 18:14:35 +00:00
define <16 x i8> @trunc2x8i16(<8 x i16> %a, <8 x i16> %b) {
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; SSE2-LABEL: trunc2x8i16:
; SSE2: # BB#0: # %entry
; SSE2-NEXT: movdqa {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
; SSE2-NEXT: pand %xmm2, %xmm1
; SSE2-NEXT: pand %xmm2, %xmm0
; SSE2-NEXT: packuswb %xmm1, %xmm0
; SSE2-NEXT: retq
;
; SSSE3-LABEL: trunc2x8i16:
; SSSE3: # BB#0: # %entry
[x86] Remove the insanely over-aggressive unpack lowering strategy for v16i8 shuffles, and replace it with new facilities. This uses precise patterns to match exact unpacks, and the new generalized unpack lowering only when we detect a case where we will have to shuffle both inputs anyways and they terminate in exactly a blend. This fixes all of the blend horrors that I uncovered by always lowering blends through the vector shuffle lowering. It also removes *sooooo* much of the crazy instruction sequences required for v16i8 lowering previously. Much cleaner now. The only "meh" aspect is that we sometimes use pshufb+pshufb+unpck when it would be marginally nicer to use pshufb+pshufb+por. However, the difference there is *tiny*. In many cases its a win because we re-use the pshufb mask. In others, we get to avoid the pshufb entirely. I've left a FIXME, but I'm dubious we can really do better than this. I'm actually pretty happy with this lowering now. For SSE2 this exposes some horrors that were really already there. Those will have to fixed by changing a different path through the v16i8 lowering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229846 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-19 12:10:37 +00:00
; SSSE3-NEXT: movdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
; SSSE3-NEXT: pshufb %xmm2, %xmm1
; SSSE3-NEXT: pshufb %xmm2, %xmm0
; SSSE3-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; SSSE3-NEXT: retq
;
; SSE41-LABEL: trunc2x8i16:
; SSE41: # BB#0: # %entry
[x86] Remove the insanely over-aggressive unpack lowering strategy for v16i8 shuffles, and replace it with new facilities. This uses precise patterns to match exact unpacks, and the new generalized unpack lowering only when we detect a case where we will have to shuffle both inputs anyways and they terminate in exactly a blend. This fixes all of the blend horrors that I uncovered by always lowering blends through the vector shuffle lowering. It also removes *sooooo* much of the crazy instruction sequences required for v16i8 lowering previously. Much cleaner now. The only "meh" aspect is that we sometimes use pshufb+pshufb+unpck when it would be marginally nicer to use pshufb+pshufb+por. However, the difference there is *tiny*. In many cases its a win because we re-use the pshufb mask. In others, we get to avoid the pshufb entirely. I've left a FIXME, but I'm dubious we can really do better than this. I'm actually pretty happy with this lowering now. For SSE2 this exposes some horrors that were really already there. Those will have to fixed by changing a different path through the v16i8 lowering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229846 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-19 12:10:37 +00:00
; SSE41-NEXT: movdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
; SSE41-NEXT: pshufb %xmm2, %xmm1
; SSE41-NEXT: pshufb %xmm2, %xmm0
; SSE41-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; SSE41-NEXT: retq
;
; AVX-LABEL: trunc2x8i16:
; AVX: # BB#0: # %entry
[x86] Remove the insanely over-aggressive unpack lowering strategy for v16i8 shuffles, and replace it with new facilities. This uses precise patterns to match exact unpacks, and the new generalized unpack lowering only when we detect a case where we will have to shuffle both inputs anyways and they terminate in exactly a blend. This fixes all of the blend horrors that I uncovered by always lowering blends through the vector shuffle lowering. It also removes *sooooo* much of the crazy instruction sequences required for v16i8 lowering previously. Much cleaner now. The only "meh" aspect is that we sometimes use pshufb+pshufb+unpck when it would be marginally nicer to use pshufb+pshufb+por. However, the difference there is *tiny*. In many cases its a win because we re-use the pshufb mask. In others, we get to avoid the pshufb entirely. I've left a FIXME, but I'm dubious we can really do better than this. I'm actually pretty happy with this lowering now. For SSE2 this exposes some horrors that were really already there. Those will have to fixed by changing a different path through the v16i8 lowering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229846 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-19 12:10:37 +00:00
; AVX-NEXT: vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
; AVX-NEXT: vpshufb %xmm2, %xmm1, %xmm1
; AVX-NEXT: vpshufb %xmm2, %xmm0, %xmm0
; AVX-NEXT: vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; AVX-NEXT: retq
[X86][SSE] Added dual vector truncation tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228857 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-11 18:14:35 +00:00
entry:
%0 = trunc <8 x i16> %a to <8 x i8>
%1 = trunc <8 x i16> %b to <8 x i8>
%2 = shufflevector <8 x i8> %0, <8 x i8> %1, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
ret <16 x i8> %2
}
[X86][SSE] Added vector integer truncation tests - based off pr15524 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225137 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-04 17:52:00 +00:00
; PR15524 http://llvm.org/bugs/show_bug.cgi?id=15524
define i64 @trunc8i16(<8 x i16> %inval) {
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; SSE2-LABEL: trunc8i16:
; SSE2: # BB#0: # %entry
; SSE2-NEXT: pand {{.*}}(%rip), %xmm0
; SSE2-NEXT: packuswb %xmm0, %xmm0
; SSE2-NEXT: movd %xmm0, %rax
; SSE2-NEXT: retq
;
[X86][SSE] Added vector integer truncation tests - based off pr15524 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225137 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-04 17:52:00 +00:00
; SSSE3-LABEL: trunc8i16:
; SSSE3: # BB#0: # %entry
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; SSSE3-NEXT: pshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
; SSSE3-NEXT: movd %xmm0, %rax
; SSSE3-NEXT: retq
;
[X86][SSE] Added vector integer truncation tests - based off pr15524 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225137 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-04 17:52:00 +00:00
; SSE41-LABEL: trunc8i16:
; SSE41: # BB#0: # %entry
[x86] Clean up a few test cases with the update script. NFC git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229349 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-16 01:39:50 +00:00
; SSE41-NEXT: pshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
; SSE41-NEXT: movd %xmm0, %rax
; SSE41-NEXT: retq
;
; AVX-LABEL: trunc8i16:
; AVX: # BB#0: # %entry
; AVX-NEXT: vpshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
; AVX-NEXT: vmovq %xmm0, %rax
; AVX-NEXT: retq
[X86][SSE] Added vector integer truncation tests - based off pr15524 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225137 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-04 17:52:00 +00:00
entry:
%0 = trunc <8 x i16> %inval to <8 x i8>
%1 = bitcast <8 x i8> %0 to i64
ret i64 %1
}
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