Fix crash in gather/scatter optimization pass.

2012-01-27 12:59:18 -08:00
parent 37cdc18639
commit b7f17d435f
1 changed files with 6 additions and 2 deletions
--- a/opt.cpp
+++ b/opt.cpp
@@ -2200,8 +2200,12 @@ lCheckMulForLinear(llvm::Value *op0, llvm::Value *op1, int vectorLength,
    llvm::ConstantVector *cv = llvm::dyn_cast<llvm::ConstantVector>(op0);
    if (cv == NULL)
        return false;
-    llvm::ConstantInt *splat = 
-        llvm::dyn_cast<llvm::ConstantInt>(cv->getSplatValue());
+
+    llvm::Constant *csplat = cv->getSplatValue();
+    if (csplat == NULL)
+        return false;
+
+    llvm::ConstantInt *splat = llvm::dyn_cast<llvm::ConstantInt>(csplat);
    if (splat == NULL)
        return false;