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Preserve cold attribute for function decls 

Differential Revision: http://reviews.llvm.org/D34133

llvm-svn: 305325
This commit is contained in:
Xinliang David Li 2017-06-13 21:14:07 +00:00
parent 0096d78bf9
commit 4ec3606835
2 changed files with 12 additions and 0 deletions
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2
clang/lib/CodeGen/CGCall.cpp
View File

@ -1795,6 +1795,8 @@ void CodeGenModule::ConstructAttributeList(
FuncAttrs.addAttribute(llvm::Attribute::NoUnwind);
if (TargetDecl->hasAttr<NoReturnAttr>())
FuncAttrs.addAttribute(llvm::Attribute::NoReturn);
if (TargetDecl->hasAttr<ColdAttr>())
FuncAttrs.addAttribute(llvm::Attribute::Cold);
if (TargetDecl->hasAttr<NoDuplicateAttr>())
FuncAttrs.addAttribute(llvm::Attribute::NoDuplicate);
if (TargetDecl->hasAttr<ConvergentAttr>())

10
clang/test/CodeGen/attributes.c
View File

@ -56,6 +56,13 @@ void t4() {}
void t7() __attribute__((noreturn, nothrow));
void t7() { while (1) {} }
// CHECK: define void @t72() [[COLDDEF:#[0-9]+]] {
void t71(void) __attribute__((cold));
void t72() __attribute__((cold));
void t72() { t71(); }
// CHECK: call void @t71() [[COLDSITE:#[0-9]+]]
// CHECK: declare void @t71() [[COLDDECL:#[0-9]+]]
// CHECK: define void @t10() [[NUW]] section "SECT" {
void t10(void) __attribute__((section("SECT")));
void t10(void) {}
@ -92,3 +99,6 @@ void __attribute__((section(".bar"))) t22(void) {}
// CHECK: attributes [[NUW]] = { noinline nounwind{{.*}} }
// CHECK: attributes [[NR]] = { noinline noreturn nounwind{{.*}} }
// CHECK: attributes [[COLDDEF]] = { cold {{.*}}}
// CHECK: attributes [[COLDDECL]] = { cold {{.*}}}
// CHECK: attributes [[COLDSITE]] = { cold {{.*}}}