[llvm] r315798 - [X86] Remove unnecessary bitconverts as the root of patterns for zero extended VCVTPD2UDQZ128rr and VCVTTPD2UDQZ128rr.

[Craig Topper via llvm-commits]

Author: ctopper
Date: Fri Oct 13 21:18:10 2017
New Revision: 315798

URL: http://llvm.org/viewvc/llvm-project?rev=315798&view=rev
Log:
[X86] Remove unnecessary bitconverts as the root of patterns for zero extended VCVTPD2UDQZ128rr and VCVTTPD2UDQZ128rr.

We don't need a bitconvert as a root pattern in these cases. The types in the other parts of the pattern are sufficient to express the behavior of these instructions.

Modified:
    llvm/trunk/lib/Target/X86/X86InstrAVX512.td

Modified: llvm/trunk/lib/Target/X86/X86InstrAVX512.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86InstrAVX512.td?rev=315798&r1=315797&r2=315798&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrAVX512.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrAVX512.td Fri Oct 13 21:18:10 2017
@@ -7045,14 +7045,14 @@ let Predicates = [HasAVX512, HasVLX] in
     def : Pat<(X86vzmovl (v2i64 (bitconvert
                                 (v4i32 (X86cvtp2Int (v2f64 VR128X:$src)))))),
               (VCVTPD2DQZ128rr VR128X:$src)>;
-    def : Pat<(v4i32 (bitconvert (X86vzmovl (v2i64 (bitconvert
-                                 (v4i32 (X86cvtp2UInt (v2f64 VR128X:$src)))))))),
+    def : Pat<(X86vzmovl (v2i64 (bitconvert
+                                 (v4i32 (X86cvtp2UInt (v2f64 VR128X:$src)))))),
               (VCVTPD2UDQZ128rr VR128X:$src)>;
     def : Pat<(X86vzmovl (v2i64 (bitconvert
                                 (v4i32 (X86cvttp2si (v2f64 VR128X:$src)))))),
               (VCVTTPD2DQZ128rr VR128X:$src)>;
-    def : Pat<(v4i32 (bitconvert (X86vzmovl (v2i64 (bitconvert
-                                 (v4i32 (X86cvttp2ui (v2f64 VR128X:$src)))))))),
+    def : Pat<(X86vzmovl (v2i64 (bitconvert
+                                 (v4i32 (X86cvttp2ui (v2f64 VR128X:$src)))))),
               (VCVTTPD2UDQZ128rr VR128X:$src)>;
   }