[llvm] r267264 - [WebAssembly] Set ctlz_zero_undef/cttz_zero_undef to Expand so LegalizeDAG will convert them to ctlz/cttz. Remove the now unneccessary isel patterns. NFC

[Craig Topper via llvm-commits]

Author: ctopper
Date: Fri Apr 22 21:49:25 2016
New Revision: 267264

URL: http://llvm.org/viewvc/llvm-project?rev=267264&view=rev
Log:
[WebAssembly] Set ctlz_zero_undef/cttz_zero_undef to Expand so LegalizeDAG will convert them to ctlz/cttz. Remove the now unneccessary isel patterns. NFC

Modified:
    llvm/trunk/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
    llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrInteger.td

Modified: llvm/trunk/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp?rev=267264&r1=267263&r2=267264&view=diff
==============================================================================
--- llvm/trunk/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp Fri Apr 22 21:49:25 2016
@@ -97,7 +97,7 @@ WebAssemblyTargetLowering::WebAssemblyTa
          {ISD::BSWAP, ISD::SMUL_LOHI, ISD::UMUL_LOHI,
           ISD::MULHS, ISD::MULHU, ISD::SDIVREM, ISD::UDIVREM, ISD::SHL_PARTS,
           ISD::SRA_PARTS, ISD::SRL_PARTS, ISD::ADDC, ISD::ADDE, ISD::SUBC,
-          ISD::SUBE}) {
+          ISD::SUBE, ISD::CTLZ_ZERO_UNDEF, ISD::CTTZ_ZERO_UNDEF}) {
       setOperationAction(Op, T, Expand);
     }
   }

Modified: llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrInteger.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrInteger.td?rev=267264&r1=267263&r2=267264&view=diff
==============================================================================
--- llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrInteger.td (original)
+++ llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrInteger.td Fri Apr 22 21:49:25 2016
@@ -65,12 +65,6 @@ def EQZ_I64 : I<(outs I32:$dst), (ins I6
 
 } // Defs = [ARGUMENTS]
 
-// Expand the "don't care" operations to supported operations.
-def : Pat<(ctlz_zero_undef I32:$src), (CLZ_I32 I32:$src)>;
-def : Pat<(ctlz_zero_undef I64:$src), (CLZ_I64 I64:$src)>;
-def : Pat<(cttz_zero_undef I32:$src), (CTZ_I32 I32:$src)>;
-def : Pat<(cttz_zero_undef I64:$src), (CTZ_I64 I64:$src)>;
-
 // Optimize away an explicit mask on a rotate count.
 def : Pat<(rotl I32:$lhs, (and I32:$rhs, 31)), (ROTL_I32 I32:$lhs, I32:$rhs)>;
 def : Pat<(rotr I32:$lhs, (and I32:$rhs, 31)), (ROTR_I32 I32:$lhs, I32:$rhs)>;