From 72af6b8e5d7548a4a6805b156169d240cef7d0db Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 18 Aug 2003 16:06:09 +0000
Subject: [PATCH] Add support for the sig(set|long)jmp intrinsics

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7951 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/CBackend/CBackend.cpp             | 5 ++++-
 lib/Target/CBackend/Writer.cpp               | 5 ++++-
 lib/Target/SparcV9/SparcV9InstrSelection.cpp | 2 ++
 lib/Target/X86/InstSelectSimple.cpp          | 2 ++
 lib/Target/X86/X86ISelSimple.cpp             | 2 ++
 5 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index 0443c184757..4bc354bdee1 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -1139,6 +1139,7 @@ void CWriter::visitCallInst(CallInst &I) {
         return;
         
       case LLVMIntrinsic::setjmp:
+      case LLVMIntrinsic::sigsetjmp:
         // This instrinsic should never exist in the program, but until we get
         // setjmp/longjmp transformations going on, we should codegen it to
         // something reasonable.  This will allow code that never calls longjmp
@@ -1146,7 +1147,9 @@ void CWriter::visitCallInst(CallInst &I) {
         Out << "0";
         return;
       case LLVMIntrinsic::longjmp:
-        // Treat longjmp the same as setjmp
+      case LLVMIntrinsic::siglongjmp:
+        // Longjmp is not implemented, and never will be.  It would cause an
+        // exception throw.
         Out << "abort()";
         return;
       }
diff --git a/lib/Target/CBackend/Writer.cpp b/lib/Target/CBackend/Writer.cpp
index 0443c184757..4bc354bdee1 100644
--- a/lib/Target/CBackend/Writer.cpp
+++ b/lib/Target/CBackend/Writer.cpp
@@ -1139,6 +1139,7 @@ void CWriter::visitCallInst(CallInst &I) {
         return;
         
       case LLVMIntrinsic::setjmp:
+      case LLVMIntrinsic::sigsetjmp:
         // This instrinsic should never exist in the program, but until we get
         // setjmp/longjmp transformations going on, we should codegen it to
         // something reasonable.  This will allow code that never calls longjmp
@@ -1146,7 +1147,9 @@ void CWriter::visitCallInst(CallInst &I) {
         Out << "0";
         return;
       case LLVMIntrinsic::longjmp:
-        // Treat longjmp the same as setjmp
+      case LLVMIntrinsic::siglongjmp:
+        // Longjmp is not implemented, and never will be.  It would cause an
+        // exception throw.
         Out << "abort()";
         return;
       }
diff --git a/lib/Target/SparcV9/SparcV9InstrSelection.cpp b/lib/Target/SparcV9/SparcV9InstrSelection.cpp
index 970c5fdcf0a..ee243334951 100644
--- a/lib/Target/SparcV9/SparcV9InstrSelection.cpp
+++ b/lib/Target/SparcV9/SparcV9InstrSelection.cpp
@@ -1433,6 +1433,7 @@ bool CodeGenIntrinsic(LLVMIntrinsic::ID iid, CallInst &callInstr,
                    addReg(callInstr.getOperand(1)));
     return true;
 
+  case LLVMIntrinsic::sigsetjmp:
   case LLVMIntrinsic::setjmp: {
     // act as if we return 0
     unsigned g0 = target.getRegInfo().getZeroRegNum();
@@ -1441,6 +1442,7 @@ bool CodeGenIntrinsic(LLVMIntrinsic::ID iid, CallInst &callInstr,
     return true;
   }
 
+  case LLVMIntrinsic::siglongjmp:
   case LLVMIntrinsic::longjmp: {
     // call abort()
     Module* M = callInstr.getParent()->getParent()->getParent();
diff --git a/lib/Target/X86/InstSelectSimple.cpp b/lib/Target/X86/InstSelectSimple.cpp
index 2cc4e8367df..26e908ff043 100644
--- a/lib/Target/X86/InstSelectSimple.cpp
+++ b/lib/Target/X86/InstSelectSimple.cpp
@@ -978,10 +978,12 @@ void ISel::visitIntrinsicCall(LLVMIntrinsic::ID ID, CallInst &CI) {
     return;
 
   case LLVMIntrinsic::longjmp:
+  case LLVMIntrinsic::siglongjmp:
     BuildMI(X86::CALLpcrel32, 1).addExternalSymbol("abort", true); 
     return;
 
   case LLVMIntrinsic::setjmp:
+  case LLVMIntrinsic::sigsetjmp:
     // Setjmp always returns zero...
     BuildMI(BB, X86::MOVir32, 1, getReg(CI)).addZImm(0);
     return;
diff --git a/lib/Target/X86/X86ISelSimple.cpp b/lib/Target/X86/X86ISelSimple.cpp
index 2cc4e8367df..26e908ff043 100644
--- a/lib/Target/X86/X86ISelSimple.cpp
+++ b/lib/Target/X86/X86ISelSimple.cpp
@@ -978,10 +978,12 @@ void ISel::visitIntrinsicCall(LLVMIntrinsic::ID ID, CallInst &CI) {
     return;
 
   case LLVMIntrinsic::longjmp:
+  case LLVMIntrinsic::siglongjmp:
     BuildMI(X86::CALLpcrel32, 1).addExternalSymbol("abort", true); 
     return;
 
   case LLVMIntrinsic::setjmp:
+  case LLVMIntrinsic::sigsetjmp:
     // Setjmp always returns zero...
     BuildMI(BB, X86::MOVir32, 1, getReg(CI)).addZImm(0);
     return;