[llvm] r215526 - AVX-512: Fixed a bug in shufflevector lowering.

[Elena Demikhovsky]

Author: delena
Date: Wed Aug 13 02:58:43 2014
New Revision: 215526

URL: http://llvm.org/viewvc/llvm-project?rev=215526&view=rev
Log:
AVX-512: Fixed a bug in shufflevector lowering.
PALIGNR instruction does not exist in AVX-512F set.
Added a test.

Modified:
    llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
    llvm/trunk/test/CodeGen/X86/avx512-shuffle.ll

Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=215526&r1=215525&r2=215526&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Wed Aug 13 02:58:43 2014
@@ -3872,7 +3872,8 @@ static bool isAlignrMask(ArrayRef<int> M
 static bool isPALIGNRMask(ArrayRef<int> Mask, MVT VT,
                           const X86Subtarget *Subtarget) {
   if ((VT.is128BitVector() && !Subtarget->hasSSSE3()) ||
-      (VT.is256BitVector() && !Subtarget->hasInt256()))
+      (VT.is256BitVector() && !Subtarget->hasInt256()) ||
+      VT.is512BitVector())
     // FIXME: Add AVX512BW.
     return false;
 

Modified: llvm/trunk/test/CodeGen/X86/avx512-shuffle.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/avx512-shuffle.ll?rev=215526&r1=215525&r2=215526&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/avx512-shuffle.ll (original)
+++ llvm/trunk/test/CodeGen/X86/avx512-shuffle.ll Wed Aug 13 02:58:43 2014
@@ -199,6 +199,24 @@ define <16 x i32> @test15(<16 x i32> %a)
  %b = shufflevector <16 x i32> %a, <16 x i32> undef, <16 x i32><i32 1, i32 0, i32 3, i32 2, i32 5, i32 4, i32 7, i32 6, i32 9, i32 8, i32 11, i32 10, i32 13, i32 12, i32 15, i32 14>
  ret <16 x i32> %b
 }
+
+; CHECK-LABEL: valign_test_v16f32
+; CHECK: valignd $2, %zmm0, %zmm0
+; CHECK: ret
+define <16 x float> @valign_test_v16f32(<16 x float> %a, <16 x float> %b) nounwind {
+  %c = shufflevector <16 x float> %a, <16 x float> %b, <16 x i32><i32 2, i32 3, i32 undef, i32 undef, i32 6, i32 7, i32 undef, i32 undef, i32 10, i32 11, i32 undef, i32 undef, i32 14, i32 15, i32 undef, i32 undef>
+  ret <16 x float> %c
+}
+
+; CHECK-LABEL: valign_test_v16i32
+; CHECK: valignd $2, %zmm0, %zmm0
+; CHECK: ret
+define <16 x i32> @valign_test_v16i32(<16 x i32> %a, <16 x i32> %b) nounwind {
+  %c = shufflevector <16 x i32> %a, <16 x i32> %b, <16 x i32><i32 2, i32 3, i32 undef, i32 undef, i32 6, i32 7, i32 undef, i32 undef, i32 10, i32 11, i32 undef, i32 undef, i32 14, i32 15, i32 undef, i32 undef>
+  ret <16 x i32> %c
+}
+
+
 ; CHECK-LABEL: test16
 ; CHECK: valignq $2, %zmm0, %zmm1
 ; CHECK: ret