Setjmp should always return zero if we don't implement longjmp. This avoids

leaving trash in the register, fixing anagram

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7013 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/InstSelectSimple.cpp b/lib/Target/X86/InstSelectSimple.cpp
index e57a6ab75add7315d7dfe50710532c64fdc578e2..b2e11ba9ca11bb371bbd7c2ae43212430c5d564d 100644 (file)
--- a/lib/Target/X86/InstSelectSimple.cpp
+++ b/lib/Target/X86/InstSelectSimple.cpp
@@ -981,6 +981,8 @@ void ISel::visitIntrinsicCall(LLVMIntrinsic::ID ID, CallInst &CI) {
   case LLVMIntrinsic::longjmp:
     BuildMI(X86::CALLpcrel32, 1).addExternalSymbol("abort", true); 
   case LLVMIntrinsic::setjmp:
+    // Setjmp always returns zero...
+    BuildMI(BB, X86::MOVir32, 1, getReg(CI)).addZImm(0);
     return;
   default: assert(0 && "Unknown intrinsic for X86!");
   }

diff --git a/lib/Target/X86/X86ISelSimple.cpp b/lib/Target/X86/X86ISelSimple.cpp
index e57a6ab75add7315d7dfe50710532c64fdc578e2..b2e11ba9ca11bb371bbd7c2ae43212430c5d564d 100644 (file)
--- a/lib/Target/X86/X86ISelSimple.cpp
+++ b/lib/Target/X86/X86ISelSimple.cpp
@@ -981,6 +981,8 @@ void ISel::visitIntrinsicCall(LLVMIntrinsic::ID ID, CallInst &CI) {
   case LLVMIntrinsic::longjmp:
     BuildMI(X86::CALLpcrel32, 1).addExternalSymbol("abort", true); 
   case LLVMIntrinsic::setjmp:
+    // Setjmp always returns zero...
+    BuildMI(BB, X86::MOVir32, 1, getReg(CI)).addZImm(0);
     return;
   default: assert(0 && "Unknown intrinsic for X86!");
   }