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Fix PR6196. GV callee may not be a function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95017 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -2288,9 +2288,11 @@ X86TargetLowering::IsEligibleForTailCallOptimization(SDValue Callee,
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// Don't tail call optimize recursive call.
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GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee);
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if (!G) return false; // FIXME: common external symbols?
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const Function *CalleeF = cast<Function>(G->getGlobal());
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const Type *CalleeRetTy = CalleeF->getReturnType();
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return CallerRetTy == CalleeRetTy;
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if (const Function *CalleeF = dyn_cast<Function>(G->getGlobal())) {
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const Type *CalleeRetTy = CalleeF->getReturnType();
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return CallerRetTy == CalleeRetTy;
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}
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return false;
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}
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FastISel *
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12
test/CodeGen/X86/2010-02-01-TaillCallCrash.ll
Normal file
12
test/CodeGen/X86/2010-02-01-TaillCallCrash.ll
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@ -0,0 +1,12 @@
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; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu
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; PR6196
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%"char[]" = type [1 x i8]
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@.str = external constant %"char[]", align 1 ; <%"char[]"*> [#uses=1]
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define i32 @regex_subst() nounwind {
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entry:
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%0 = tail call i32 bitcast (%"char[]"* @.str to i32 (i32)*)(i32 0) nounwind ; <i32> [#uses=1]
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ret i32 %0
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}
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