[CodeGen] Use IRBuilder to create llvm.lifetime intrinsics.

Summary:
In addition to easier syntax, IRBuilder makes sure to set correct
debug locations for newly added instructions (bitcast and
llvm.lifetime itself). This restores the original behavior, which
was modified by r234581 (reapplied as r235553).

Extend one of the tests to check for debug locations.

Test Plan: regression test suite

Reviewers: aadg, dblaikie

Subscribers: cfe-commits, majnemer

Differential Revision: http://reviews.llvm.org/D10418

llvm-svn: 239643

diff --git a/clang/lib/CodeGen/CGDecl.cpp b/clang/lib/CodeGen/CGDecl.cpp
index 579a041..07dbce4 100644 (file)
--- a/clang/lib/CodeGen/CGDecl.cpp
+++ b/clang/lib/CodeGen/CGDecl.cpp
@@ -864,20 +864,17 @@ llvm::Value *CodeGenFunction::EmitLifetimeStart(uint64_t Size,
     return nullptr;
 
   llvm::Value *SizeV = llvm::ConstantInt::get(Int64Ty, Size);
-  llvm::Value *Args[] = {
-      SizeV,
-      new llvm::BitCastInst(Addr, Int8PtrTy, "", Builder.GetInsertBlock())};
-  llvm::CallInst *C = llvm::CallInst::Create(CGM.getLLVMLifetimeStartFn(), Args,
-                                             "", Builder.GetInsertBlock());
+  Addr = Builder.CreateBitCast(Addr, Int8PtrTy);
+  llvm::CallInst *C =
+      Builder.CreateCall(CGM.getLLVMLifetimeStartFn(), {SizeV, Addr});
   C->setDoesNotThrow();
   return SizeV;
 }
 
 void CodeGenFunction::EmitLifetimeEnd(llvm::Value *Size, llvm::Value *Addr) {
-  llvm::Value *Args[] = {Size, new llvm::BitCastInst(Addr, Int8PtrTy, "",
-                                                     Builder.GetInsertBlock())};
-  llvm::CallInst *C = llvm::CallInst::Create(CGM.getLLVMLifetimeEndFn(), Args,
-                                             "", Builder.GetInsertBlock());
+  Addr = Builder.CreateBitCast(Addr, Int8PtrTy);
+  llvm::CallInst *C =
+      Builder.CreateCall(CGM.getLLVMLifetimeEndFn(), {Size, Addr});
   C->setDoesNotThrow();
 }
 

diff --git a/clang/test/CodeGen/cleanup-destslot-simple.c b/clang/test/CodeGen/cleanup-destslot-simple.c
index bae97c8..b8328af 100644 (file)
--- a/clang/test/CodeGen/cleanup-destslot-simple.c
+++ b/clang/test/CodeGen/cleanup-destslot-simple.c
@@ -13,7 +13,9 @@ int test() {
   return *p;
 // CHECK: [[X:%.*]] = alloca i32
 // CHECK: [[P:%.*]] = alloca i32*
-// LIFETIME: call void @llvm.lifetime.start(i64 4, i8* %{{.*}})
-// LIFETIME: call void @llvm.lifetime.start(i64 8, i8* %{{.*}})
+// LIFETIME: call void @llvm.lifetime.start(i64 4, i8* %{{.*}}){{( #[0-9]+)?}}, !dbg
+// LIFETIME: call void @llvm.lifetime.start(i64 8, i8* %{{.*}}){{( #[0-9]+)?}}, !dbg
 // CHECK-NOT: store i32 %{{.*}}, i32* %cleanup.dest.slot
+// LIFETIME: call void @llvm.lifetime.end(i64 8, {{.*}}){{( #[0-9]+)?}}, !dbg
+// LIFETIME: call void @llvm.lifetime.end(i64 4, {{.*}}){{( #[0-9]+)?}}, !dbg
 }