[llvm] r211616 - R600: Remove DIV_INF

[Matt Arsenault]

Author: arsenm
Date: Tue Jun 24 12:42:16 2014
New Revision: 211616

URL: http://llvm.org/viewvc/llvm-project?rev=211616&view=rev
Log:
R600: Remove DIV_INF

This corresponded to an amdil instruction which there is
a 2 instruction equivalent for.

Modified:
    llvm/trunk/lib/Target/R600/AMDGPUISelLowering.cpp
    llvm/trunk/lib/Target/R600/AMDGPUISelLowering.h

Modified: llvm/trunk/lib/Target/R600/AMDGPUISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/R600/AMDGPUISelLowering.cpp?rev=211616&r1=211615&r2=211616&view=diff
==============================================================================
--- llvm/trunk/lib/Target/R600/AMDGPUISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/R600/AMDGPUISelLowering.cpp Tue Jun 24 12:42:16 2014
@@ -1246,7 +1246,8 @@ SDValue AMDGPUTargetLowering::LowerSDIV2
   SDValue fb = DAG.getNode(ISD::SINT_TO_FP, DL, FLTTY, ib);
 
   // float fq = native_divide(fa, fb);
-  SDValue fq = DAG.getNode(AMDGPUISD::DIV_INF, DL, FLTTY, fa, fb);
+  SDValue fq = DAG.getNode(ISD::FMUL, DL, FLTTY,
+                           fa, DAG.getNode(AMDGPUISD::RCP, DL, FLTTY, fb));
 
   // fq = trunc(fq);
   fq = DAG.getNode(ISD::FTRUNC, DL, FLTTY, fq);
@@ -2031,7 +2032,6 @@ const char* AMDGPUTargetLowering::getTar
   // AMDIL DAG nodes
   NODE_NAME_CASE(CALL);
   NODE_NAME_CASE(UMUL);
-  NODE_NAME_CASE(DIV_INF);
   NODE_NAME_CASE(RET_FLAG);
   NODE_NAME_CASE(BRANCH_COND);
 

Modified: llvm/trunk/lib/Target/R600/AMDGPUISelLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/R600/AMDGPUISelLowering.h?rev=211616&r1=211615&r2=211616&view=diff
==============================================================================
--- llvm/trunk/lib/Target/R600/AMDGPUISelLowering.h (original)
+++ llvm/trunk/lib/Target/R600/AMDGPUISelLowering.h Tue Jun 24 12:42:16 2014
@@ -165,7 +165,6 @@ enum {
   FIRST_NUMBER = ISD::BUILTIN_OP_END,
   CALL,        // Function call based on a single integer
   UMUL,        // 32bit unsigned multiplication
-  DIV_INF,      // Divide with infinity returned on zero divisor
   RET_FLAG,
   BRANCH_COND,
   // End AMDIL ISD Opcodes