[llvm] r192562 - Don't use 64-bit versions of MOVMSKPD in CodeGen. The instructions only produce a 1-bit result so we can just use SUBREG_TO_REG to extend the 32-bit versions.

[Craig Topper]

Author: ctopper
Date: Sun Oct 13 19:24:33 2013
New Revision: 192562

URL: http://llvm.org/viewvc/llvm-project?rev=192562&view=rev
Log:
Don't use 64-bit versions of MOVMSKPD in CodeGen. The instructions only produce a 1-bit result so we can just use SUBREG_TO_REG to extend the 32-bit versions.

Modified:
    llvm/trunk/lib/Target/X86/X86InstrSSE.td

Modified: llvm/trunk/lib/Target/X86/X86InstrSSE.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86InstrSSE.td?rev=192562&r1=192561&r2=192562&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrSSE.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrSSE.td Sun Oct 13 19:24:33 2013
@@ -2731,11 +2731,13 @@ let Predicates = [HasAVX] in {
   def : Pat<(i32 (X86fgetsign FR32:$src)),
             (VMOVMSKPSrr32 (COPY_TO_REGCLASS FR32:$src, VR128))>;
   def : Pat<(i64 (X86fgetsign FR32:$src)),
-            (VMOVMSKPSrr64 (COPY_TO_REGCLASS FR32:$src, VR128))>;
+            (SUBREG_TO_REG (i64 0),
+             (VMOVMSKPSrr32 (COPY_TO_REGCLASS FR32:$src, VR128)), sub_32bit)>;
   def : Pat<(i32 (X86fgetsign FR64:$src)),
             (VMOVMSKPDrr32 (COPY_TO_REGCLASS FR64:$src, VR128))>;
   def : Pat<(i64 (X86fgetsign FR64:$src)),
-            (VMOVMSKPDrr64 (COPY_TO_REGCLASS FR64:$src, VR128))>;
+            (SUBREG_TO_REG (i64 0),
+             (VMOVMSKPDrr32 (COPY_TO_REGCLASS FR64:$src, VR128)), sub_32bit)>;
 }
 
 defm MOVMSKPS : sse12_extr_sign_mask<VR128, int_x86_sse_movmsk_ps, "movmskps",
@@ -2747,13 +2749,15 @@ def : Pat<(i32 (X86fgetsign FR32:$src)),
           (MOVMSKPSrr32 (COPY_TO_REGCLASS FR32:$src, VR128))>,
       Requires<[UseSSE1]>;
 def : Pat<(i64 (X86fgetsign FR32:$src)),
-          (MOVMSKPSrr64 (COPY_TO_REGCLASS FR32:$src, VR128))>,
+          (SUBREG_TO_REG (i64 0),
+           (MOVMSKPSrr32 (COPY_TO_REGCLASS FR32:$src, VR128)), sub_32bit)>,
       Requires<[UseSSE1]>;
 def : Pat<(i32 (X86fgetsign FR64:$src)),
           (MOVMSKPDrr32 (COPY_TO_REGCLASS FR64:$src, VR128))>,
       Requires<[UseSSE2]>;
 def : Pat<(i64 (X86fgetsign FR64:$src)),
-          (MOVMSKPDrr64 (COPY_TO_REGCLASS FR64:$src, VR128))>,
+          (SUBREG_TO_REG (i64 0),
+           (MOVMSKPDrr32 (COPY_TO_REGCLASS FR64:$src, VR128)), sub_32bit)>,
       Requires<[UseSSE2]>;
 
 //===---------------------------------------------------------------------===//