Remove code to adjust the iterator for llvm.readio and llvm.writeio.

The iterator is pointing at the next instruction which should not disappear
when doing the load/store replacement.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12954 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/InstSelectSimple.cpp b/lib/Target/X86/InstSelectSimple.cpp
index 18b595fad85ef22572662a8e8af102313230f979..0715e20c325c41eeace51d00cfeca8fc128ddf71 100644 (file)
--- a/lib/Target/X86/InstSelectSimple.cpp
+++ b/lib/Target/X86/InstSelectSimple.cpp
@@ -1548,11 +1548,6 @@ void ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
             LoadInst * LI = new LoadInst (CI->getOperand(1), "", true, CI);
             CI->replaceAllUsesWith (LI);
             BB->getInstList().erase (CI);
-            if (Before) {        // Move iterator to instruction after call
-              I = Before;  ++I;
-            } else {
-              I = BB->begin();
-            }
             break;
           }
           case Intrinsic::writeio: {
@@ -1563,11 +1558,6 @@ void ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
                                             CI->getOperand(2), true, CI);
             CI->replaceAllUsesWith (LI);
             BB->getInstList().erase (CI);
-            if (Before) {        // Move iterator to instruction after call
-              I = Before;  ++I;
-            } else {
-              I = BB->begin();
-            }
             break;
           }
           default:

diff --git a/lib/Target/X86/X86ISelSimple.cpp b/lib/Target/X86/X86ISelSimple.cpp
index 18b595fad85ef22572662a8e8af102313230f979..0715e20c325c41eeace51d00cfeca8fc128ddf71 100644 (file)
--- a/lib/Target/X86/X86ISelSimple.cpp
+++ b/lib/Target/X86/X86ISelSimple.cpp
@@ -1548,11 +1548,6 @@ void ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
             LoadInst * LI = new LoadInst (CI->getOperand(1), "", true, CI);
             CI->replaceAllUsesWith (LI);
             BB->getInstList().erase (CI);
-            if (Before) {        // Move iterator to instruction after call
-              I = Before;  ++I;
-            } else {
-              I = BB->begin();
-            }
             break;
           }
           case Intrinsic::writeio: {
@@ -1563,11 +1558,6 @@ void ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
                                             CI->getOperand(2), true, CI);
             CI->replaceAllUsesWith (LI);
             BB->getInstList().erase (CI);
-            if (Before) {        // Move iterator to instruction after call
-              I = Before;  ++I;
-            } else {
-              I = BB->begin();
-            }
             break;
           }
           default: