https://github.com/tbaederr created
https://github.com/llvm/llvm-project/pull/110699
These are also called for vectors.
>From 4c7c6d3707e533d8300a622be6e02bf21b07e46c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timm=20B=C3=A4der?= <tbae...@redhat.com>
Date: Tue, 1 Oct 2024 18:39:33 +0200
Subject: [PATCH] [clang][bytecode] Protect ia32_{lzcnt,tzcnt} against
non-integers
These are also called for vectors.
---
clang/lib/AST/ByteCode/InterpBuiltin.cpp | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/clang/lib/AST/ByteCode/InterpBuiltin.cpp
b/clang/lib/AST/ByteCode/InterpBuiltin.cpp
index ebc800623f0d48..72c94e6fad3e0d 100644
--- a/clang/lib/AST/ByteCode/InterpBuiltin.cpp
+++ b/clang/lib/AST/ByteCode/InterpBuiltin.cpp
@@ -1205,6 +1205,10 @@ static bool interp__builtin_ia32_lzcnt(InterpState &S,
CodePtr OpPC,
const InterpFrame *Frame,
const Function *Func,
const CallExpr *Call) {
+ QualType CallType = Call->getType();
+ if (!CallType->isIntegerType())
+ return false;
+
APSInt Val = peekToAPSInt(S.Stk, *S.Ctx.classify(Call->getArg(0)));
pushInteger(S, Val.countLeadingZeros(), Call->getType());
return true;
@@ -1214,6 +1218,10 @@ static bool interp__builtin_ia32_tzcnt(InterpState &S,
CodePtr OpPC,
const InterpFrame *Frame,
const Function *Func,
const CallExpr *Call) {
+ QualType CallType = Call->getType();
+ if (!CallType->isIntegerType())
+ return false;
+
APSInt Val = peekToAPSInt(S.Stk, *S.Ctx.classify(Call->getArg(0)));
pushInteger(S, Val.countTrailingZeros(), Call->getType());
return true;
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