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| author | Bill Wendling <isanbard@gmail.com> | 2008-11-18 07:30:57 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2008-11-18 07:30:57 +0000 |
| commit | 7235002bd131dd850633cad530da6853af852ee5 (patch) | |
| tree | 89e249a52480d949e5e97e81910925e3d5071f7a /llvm/lib/CodeGen/StackProtector.cpp | |
| parent | ee4fa9cfbbf6f1de762db433faed3b3835132a35 (diff) | |
| download | llvm-7235002bd131dd850633cad530da6853af852ee5.zip llvm-7235002bd131dd850633cad530da6853af852ee5.tar.gz llvm-7235002bd131dd850633cad530da6853af852ee5.tar.bz2 | |
Remove the stackprotector_check intrinsic. Use a volatile load instead.
llvm-svn: 59504
Diffstat (limited to 'llvm/lib/CodeGen/StackProtector.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/StackProtector.cpp | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/llvm/lib/CodeGen/StackProtector.cpp b/llvm/lib/CodeGen/StackProtector.cpp index 10b5d6d..8fe6529 100644 --- a/llvm/lib/CodeGen/StackProtector.cpp +++ b/llvm/lib/CodeGen/StackProtector.cpp @@ -177,7 +177,7 @@ bool StackProtector::InsertStackProtectors() { // return: // ... // %1 = load __stack_chk_guard - // %2 = call i8* @llvm.stackprotect.check(StackGuardSlot) + // %2 = load StackGuardSlot // %3 = cmp i1 %1, %2 // br i1 %3, label %SP_return, label %CallStackCheckFailBlk // @@ -196,11 +196,9 @@ bool StackProtector::InsertStackProtectors() { NewBB->moveAfter(BB); // Generate the stack protector instructions in the old basic block. - LoadInst *LI = new LoadInst(StackGuardVar, "", false, BB); - CallInst *CI = CallInst:: - Create(Intrinsic::getDeclaration(M, Intrinsic::stackprotector_check), - AI, "", BB); - ICmpInst *Cmp = new ICmpInst(CmpInst::ICMP_EQ, CI, LI, "", BB); + LoadInst *LI1 = new LoadInst(StackGuardVar, "", false, BB); + LoadInst *LI2 = new LoadInst(AI, "", true, BB); + ICmpInst *Cmp = new ICmpInst(CmpInst::ICMP_EQ, LI1, LI2, "", BB); BranchInst::Create(NewBB, FailBB, Cmp, BB); } |