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raw | patch | inline | side by side (parent: b336451)
author | Chandler Carruth <chandlerc@gmail.com> | |
Thu, 7 Aug 2014 10:14:27 +0000 (10:14 +0000) | ||
committer | Chandler Carruth <chandlerc@gmail.com> | |
Thu, 7 Aug 2014 10:14:27 +0000 (10:14 +0000) |
via the fuzz tester.
Here I missed an offset when round-tripping a value through a shuffle
mask. I got it right 2 lines below. See a problem? I do. ;] I'll
probably be adding a little "swap" algorithm which accepts a range and
two values and swaps those values where they occur in the range. Don't
really have a name for it, let me know if you do.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215094 91177308-0d34-0410-b5e6-96231b3b80d8
Here I missed an offset when round-tripping a value through a shuffle
mask. I got it right 2 lines below. See a problem? I do. ;] I'll
probably be adding a little "swap" algorithm which accepts a range and
two values and swaps those values where they occur in the range. Don't
really have a name for it, let me know if you do.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215094 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86ISelLowering.cpp | patch | blob | history | |
test/CodeGen/X86/vector-shuffle-128-v8.ll | patch | blob | history |
index 2ef1a6925b6837115bbe2d1b9640e4587c209f51..d85ac5e55e43389aa694247e9bce8a229873163a 100644 (file)
Input - SourceOffset;
// We have to swap the uses in our half mask in one sweep.
for (int &M : HalfMask)
- if (M == SourceHalfMask[Input - SourceOffset])
+ if (M == SourceHalfMask[Input - SourceOffset] + SourceOffset)
M = Input;
else if (M == Input)
M = SourceHalfMask[Input - SourceOffset] + SourceOffset;
index 6ca4857e42ec5f0e051550987d988c6f849410c6..5c6a4dbaa4b96582526c2ea303dc91bc97176f2d 100644 (file)
ret <8 x i16> %shuffle
}
+define <8 x i16> @shuffle_v8i16_66751643(<8 x i16> %a, <8 x i16> %b) {
+; SSE2-LABEL: @shuffle_v8i16_66751643
+; SSE2: # BB#0:
+; SSE2-NEXT: pshuflw {{.*}} # xmm0 = xmm0[3,1,2,3,4,5,6,7]
+; SSE2-NEXT: pshufhw {{.*}} # xmm0 = xmm0[0,1,2,3,4,6,5,7]
+; SSE2-NEXT: pshufd {{.*}} # xmm0 = xmm0[2,3,2,0]
+; SSE2-NEXT: pshuflw {{.*}} # xmm0 = xmm0[1,1,3,2,4,5,6,7]
+; SSE2-NEXT: pshufhw {{.*}} # xmm0 = xmm0[0,1,2,3,7,5,4,6]
+; SSE2-NEXT: retq
+;
+; SSSE3-LABEL: @shuffle_v8i16_66751643
+; SSSE3: # BB#0:
+; SSSE3-NEXT: pshufb {{.*}} # xmm0 = xmm0[12,13,12,13,14,15,10,11,2,3,12,13,8,9,6,7]
+; SSSE3-NEXT: retq
+ %shuffle = shufflevector <8 x i16> %a, <8 x i16> %b, <8 x i32> <i32 6, i32 6, i32 7, i32 5, i32 1, i32 6, i32 4, i32 3>
+ ret <8 x i16> %shuffle
+}
+
define <8 x i16> @shuffle_v8i16_00444444(<8 x i16> %a, <8 x i16> %b) {
; SSE2-LABEL: @shuffle_v8i16_00444444
; SSE2: # BB#0: