[PATCH] D37392: [AMDGPU] Prevent infinite recursion in DAG.computeKnownBits()

Stanislav Mekhanoshin via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Sep 1 13:44:45 PDT 2017


This revision was automatically updated to reflect the committed changes.
Closed by commit rL312364: [AMDGPU] Prevent infinite recursion in DAG.computeKnownBits() (authored by rampitec).

Changed prior to commit:
  https://reviews.llvm.org/D37392?vs=113578&id=113590#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D37392

Files:
  llvm/trunk/lib/Target/AMDGPU/AMDGPUISelLowering.cpp


Index: llvm/trunk/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
===================================================================
--- llvm/trunk/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
+++ llvm/trunk/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
@@ -3886,8 +3886,8 @@
   case AMDGPUISD::MUL_U24:
   case AMDGPUISD::MUL_I24: {
     KnownBits LHSKnown, RHSKnown;
-    DAG.computeKnownBits(Op.getOperand(0), LHSKnown);
-    DAG.computeKnownBits(Op.getOperand(1), RHSKnown);
+    DAG.computeKnownBits(Op.getOperand(0), LHSKnown, Depth + 1);
+    DAG.computeKnownBits(Op.getOperand(1), RHSKnown, Depth + 1);
 
     unsigned TrailZ = LHSKnown.countMinTrailingZeros() +
                       RHSKnown.countMinTrailingZeros();


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