CodeGen peephole: fold redundant phys reg copies

[oota-llvm.git] / test / CodeGen / X86 / pshufb-mask-comments.ll

diff --git a/test/CodeGen/X86/pshufb-mask-comments.ll b/test/CodeGen/X86/pshufb-mask-comments.ll
index 3c5d6d6864ab6c491353d8c4ea3ba9fd30733e6d..105a035be592e2e4181d366cf2765896753a41d9 100644 (file)
--- a/test/CodeGen/X86/pshufb-mask-comments.ll
+++ b/test/CodeGen/X86/pshufb-mask-comments.ll
@@ -4,7 +4,7 @@
 
 define <16 x i8> @test1(<16 x i8> %V) {
 ; CHECK-LABEL: test1:
-; CHECK: pshufb {{.*}} # xmm0 = xmm0[1,0,0,0,0,2,0,0,0,0,3,0,0,0,0,4]
+; CHECK: pshufb {{.*}}# xmm0 = xmm0[1,0,0,0,0,2,0,0,0,0,3,0,0,0,0,4]
   %1 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %V, <16 x i8> <i8 1, i8 0, i8 0, i8 0, i8 0, i8 2, i8 0, i8 0, i8 0, i8 0, i8 3, i8 0, i8 0, i8 0, i8 0, i8 4>)
   ret <16 x i8> %1
 }
@@ -13,7 +13,7 @@ define <16 x i8> @test1(<16 x i8> %V) {
 
 define <16 x i8> @test2(<16 x i8> %V) {
 ; CHECK-LABEL: test2:
-; CHECK: pshufb {{.*}} # xmm0 = xmm0[15,0,0,0,0,0,0,0,0,0,1,0,0,0,0,2]
+; CHECK: pshufb {{.*}}# xmm0 = xmm0[15,0,0,0,0,0,0,0,0,0,1,0,0,0,0,2]
   %1 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %V, <16 x i8> <i8 15, i8 0, i8 0, i8 0, i8 0, i8 16, i8 0, i8 0, i8 0, i8 0, i8 17, i8 0, i8 0, i8 0, i8 0, i8 50>)
   ret <16 x i8> %1
 }
@@ -22,9 +22,31 @@ define <16 x i8> @test2(<16 x i8> %V) {
 
 define <16 x i8> @test3(<16 x i8> %V) {
 ; CHECK-LABEL: test3:
-; CHECK: pshufb {{.*}} # xmm0 = xmm0[1,0,0,15,0,2,0,0],zero,xmm0[0,3,0,0],zero,xmm0[0,4]
+; CHECK: pshufb {{.*}}# xmm0 = xmm0[1,0,0,15,0,2,0,0],zero,xmm0[0,3,0,0],zero,xmm0[0,4]
   %1 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %V, <16 x i8> <i8 1, i8 0, i8 0, i8 127, i8 0, i8 2, i8 0, i8 0, i8 128, i8 0, i8 3, i8 0, i8 0, i8 255, i8 0, i8 4>)
   ret <16 x i8> %1
 }
 
+; Test that we won't crash when the constant was reused for another instruction.
+
+define <16 x i8> @test4(<2 x i64>* %V) {
+; CHECK-LABEL: test4
+; CHECK: pshufb {{.*}}
+  store <2 x i64> <i64 1084818905618843912, i64 506097522914230528>, <2 x i64>* %V, align 16
+  %1 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> undef, <16 x i8> <i8 8, i8 9, i8 10, i8 11, i8 12, i8 13, i8 14, i8 15, i8 0, i8 1, i8 2, i8 3, i8 4, i8 5, i8 6, i8 7>)
+  ret <16 x i8> %1
+}
+
+define <16 x i8> @test5() {
+; CHECK-LABEL: test5
+; CHECK: pshufb {{.*}}
+  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)
+  ret <16 x i8> %2
+}
+
 declare <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8>, <16 x i8>) nounwind readnone