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Fix rdar://6103124, the only dummy blocks are ones without names. Named blocks 

are important part of control flow structures.

llvm-svn: 54078
This commit is contained in:
Chris Lattner 2008-07-25 23:40:10 +00:00
parent 54912b3e8d
commit 4591fd0aac
2 changed files with 15 additions and 7 deletions
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2
clang/lib/CodeGen/CodeGenFunction.cpp
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@ -148,7 +148,7 @@ void CodeGenFunction::GenerateCode(const FunctionDecl *FD) {
/// isDummyBlock - Return true if BB is an empty basic block
/// with no predecessors.
bool CodeGenFunction::isDummyBlock(const llvm::BasicBlock *BB) {
if (BB->empty() && pred_begin(BB) == pred_end(BB))
if (BB->empty() && pred_begin(BB) == pred_end(BB) && !BB->hasName())
return true;
return false;
}

20
clang/test/CodeGen/dostmt.c
View File

@ -1,7 +1,7 @@
// RUN: clang %s -emit-llvm
// RUN: clang %s -emit-llvm -o -
int bar();
int foo() {
int test0() {
int i;
i = 1 + 2;
do {
@ -12,7 +12,7 @@ int foo() {
}
int foo1() {
int test1() {
int i;
i = 1 + 2;
do {
@ -25,7 +25,7 @@ int foo1() {
}
int foo2() {
int test2() {
int i;
i = 1 + 2;
do {
@ -38,7 +38,7 @@ int foo2() {
}
int foo3() {
int test3() {
int i;
i = 1 + 2;
do {
@ -50,7 +50,7 @@ int foo3() {
}
int foo4() {
int test4() {
int i;
i = 1 + 2;
do {
@ -60,3 +60,11 @@ int foo4() {
} while(0);
return i;
}
// rdar://6103124
void test5() {
do { break; } while(0);
}