[llvm-commits] [llvm] r144566 - in /llvm/trunk: lib/Target/X86/X86InstrSSE.td test/CodeGen/X86/vec_shuffle-39.ll

[Evan Cheng]

Author: evancheng
Date: Mon Nov 14 14:35:52 2011
New Revision: 144566

URL: http://llvm.org/viewvc/llvm-project?rev=144566&view=rev
Log:
Add a missing pattern for X86ISD::MOVLPD. rdar://10436044

Modified:
    llvm/trunk/lib/Target/X86/X86InstrSSE.td
    llvm/trunk/test/CodeGen/X86/vec_shuffle-39.ll

Modified: llvm/trunk/lib/Target/X86/X86InstrSSE.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86InstrSSE.td?rev=144566&r1=144565&r2=144566&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrSSE.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrSSE.td Mon Nov 14 14:35:52 2011
@@ -520,6 +520,8 @@
   // is during lowering, where it's not possible to recognize the fold cause
   // it has two uses through a bitcast. One use disappears at isel time and the
   // fold opportunity reappears.
+  def : Pat<(v2f64 (X86Movlpd VR128:$src1, VR128:$src2)),
+            (MOVSDrr VR128:$src1, (EXTRACT_SUBREG (v2f64 VR128:$src2),sub_sd))>;
   def : Pat<(v4f32 (X86Movlps VR128:$src1, VR128:$src2)),
             (MOVSDrr VR128:$src1, (EXTRACT_SUBREG (v4f32 VR128:$src2),sub_sd))>;
   def : Pat<(v4i32 (X86Movlps VR128:$src1, VR128:$src2)),
@@ -647,6 +649,9 @@
   // is during lowering, where it's not possible to recognize the fold cause
   // it has two uses through a bitcast. One use disappears at isel time and the
   // fold opportunity reappears.
+  def : Pat<(v2f64 (X86Movlpd VR128:$src1, VR128:$src2)),
+            (VMOVSDrr VR128:$src1, (EXTRACT_SUBREG (v2f64 VR128:$src2),
+                                                   sub_sd))>;
   def : Pat<(v4f32 (X86Movlps VR128:$src1, VR128:$src2)),
             (VMOVSDrr VR128:$src1, (EXTRACT_SUBREG (v4f32 VR128:$src2),
                                                    sub_sd))>;

Modified: llvm/trunk/test/CodeGen/X86/vec_shuffle-39.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/vec_shuffle-39.ll?rev=144566&r1=144565&r2=144566&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/vec_shuffle-39.ll (original)
+++ llvm/trunk/test/CodeGen/X86/vec_shuffle-39.ll Mon Nov 14 14:35:52 2011
@@ -49,3 +49,21 @@
   store double %2, double* %0
   ret void
 }
+
+; rdar://10436044
+define <2 x double> @t3() nounwind readonly {
+bb:
+; CHECK: t3:
+; CHECK: punpcklqdq %xmm1, %xmm0
+; CHECK: movq (%rax), %xmm1
+; CHECK: movsd %xmm1, %xmm0
+  %tmp0 = load i128* null, align 1
+  %tmp1 = load <2 x i32>* undef, align 8
+  %tmp2 = bitcast i128 %tmp0 to <16 x i8>
+  %tmp3 = bitcast <2 x i32> %tmp1 to i64
+  %tmp4 = insertelement <2 x i64> undef, i64 %tmp3, i32 0
+  %tmp5 = bitcast <16 x i8> %tmp2 to <2 x double>
+  %tmp6 = bitcast <2 x i64> %tmp4 to <2 x double>
+  %tmp7 = shufflevector <2 x double> %tmp5, <2 x double> %tmp6, <2 x i32> <i32 2, i32 1>
+  ret <2 x double> %tmp7
+}