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llvm-project/clang/test/CodeGen/attr-coldhot.c

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Add support for __attribute__((hot)) and __attribute__((cold)). Currently cold functions are marked with the "optsize" attribute in CodeGen so they are always optimized for size. The hot attribute is just ignored, LLVM doesn't have a way to express hotness at the moment. llvm-svn: 156723
2012-05-13 05:10:52 +08:00
// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
int test1() __attribute__((__cold__)) {
return 42;
// Check that we set the optsize attribute on the function.
Attempt to clean up tests for non-X86 platforms. llvm-svn: 175652
2013-02-21 03:30:01 +08:00
// CHECK: @test1{{.*}}[[ATTR:#[0-9]+]]
Add support for __attribute__((hot)) and __attribute__((cold)). Currently cold functions are marked with the "optsize" attribute in CodeGen so they are always optimized for size. The hot attribute is just ignored, LLVM doesn't have a way to express hotness at the moment. llvm-svn: 156723
2012-05-13 05:10:52 +08:00
// CHECK: ret
}
Modify the tests to use attribute group references instead of listing the function attributes. llvm-svn: 175606
2013-02-20 15:22:19 +08:00
[PATCH] Generate cold attribute for functions marked __atribute__((cold)) This removes a FIXME in CodeGenModule::SetLLVMFunctionAttributesForDefinition. When a function is declared cold we can now generate the IR attribute in addition to marking the function to be optimized for size. I tried adding a separate CHECK in the existing test, but it was failing. I suppose CHECK matches one line exactly once? This would be a problem if the attributes are listed in a different order, though they seem to be sorted. llvm-svn: 182666
2013-05-25 04:18:15 +08:00
// CHECK: attributes [[ATTR]] = { {{.*}}cold{{.*}}optsize{{.*}} }