[llvm] r261101 - [X86][SSE] Update pshufb mask tests.
Simon Pilgrim via llvm-commits
llvm-commits at lists.llvm.org
Wed Feb 17 07:52:39 PST 2016
Author: rksimon
Date: Wed Feb 17 09:52:39 2016
New Revision: 261101
URL: http://llvm.org/viewvc/llvm-project?rev=261101&view=rev
Log:
[X86][SSE] Update pshufb mask tests.
We are getting better at combining constant pshufb masks - use a real input instead of undef.
Add test for decoding multi-use bitcasted masks as well (actual support will come soon).
Modified:
llvm/trunk/test/CodeGen/X86/pshufb-mask-comments.ll
Modified: llvm/trunk/test/CodeGen/X86/pshufb-mask-comments.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/pshufb-mask-comments.ll?rev=261101&r1=261100&r2=261101&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/pshufb-mask-comments.ll (original)
+++ llvm/trunk/test/CodeGen/X86/pshufb-mask-comments.ll Wed Feb 17 09:52:39 2016
@@ -51,23 +51,40 @@ define <16 x i8> @test4(<16 x i8> %V, <2
ret <16 x i8> %4
}
-define <16 x i8> @test5() {
+define <16 x i8> @test5(<16 x i8> %V) {
; CHECK-LABEL: test5:
; CHECK: # BB#0:
; CHECK-NEXT: movl $1, %eax
-; CHECK-NEXT: movd %rax, %xmm0
-; CHECK-NEXT: movaps %xmm0, (%rax)
-; CHECK-NEXT: movdqa {{.*#+}} xmm0 = [1,1]
-; CHECK-NEXT: movdqa %xmm0, (%rax)
-; CHECK-NEXT: pshufb %xmm0, %xmm0
+; CHECK-NEXT: movd %rax, %xmm1
+; CHECK-NEXT: movaps %xmm1, (%rax)
+; CHECK-NEXT: movdqa {{.*#+}} xmm1 = [1,1]
+; CHECK-NEXT: movdqa %xmm1, (%rax)
+; CHECK-NEXT: pshufb %xmm1, %xmm0
; CHECK-NEXT: retq
store <2 x i64> <i64 1, i64 0>, <2 x i64>* undef, align 16
%l = load <2 x i64>, <2 x i64>* undef, align 16
%shuffle = shufflevector <2 x i64> %l, <2 x i64> undef, <2 x i32> zeroinitializer
store <2 x i64> %shuffle, <2 x i64>* undef, align 16
%1 = load <16 x i8>, <16 x i8>* undef, align 16
- %2 = call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> undef, <16 x i8> %1)
+ %2 = call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %V, <16 x i8> %1)
ret <16 x i8> %2
}
+; Test for a reused constant that would allow the pshufb to combine to a simpler instruction.
+
+define <16 x i8> @test6(<16 x i8> %V, <2 x i64>* %P) {
+; CHECK-LABEL: test6:
+; CHECK: # BB#0:
+; CHECK-NEXT: movdqa {{.*#+}} xmm1 = [217019414673948672,506380106026255364]
+; CHECK-NEXT: movdqa %xmm1, (%rdi)
+; CHECK-NEXT: pshufb %xmm1, %xmm0
+; CHECK-NEXT: retq
+ %1 = insertelement <2 x i64> undef, i64 217019414673948672, i32 0
+ %2 = insertelement <2 x i64> %1, i64 506380106026255364, i32 1
+ store <2 x i64> %2, <2 x i64>* %P, align 16
+ %3 = bitcast <2 x i64> %2 to <16 x i8>
+ %4 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %V, <16 x i8> %3)
+ ret <16 x i8> %4
+}
+
declare <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8>, <16 x i8>) nounwind readnone
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