llvm-project/clang/test/CodeGen/attr-optnone.c
Aaron Ballman ed509fe296 Use functions with prototypes when appropriate; NFC
A significant number of our tests in C accidentally use functions
without prototypes. This patch converts the function signatures to have
a prototype for the situations where the test is not specific to K&R C
declarations. e.g.,

  void func();

becomes

  void func(void);

This is the tenth batch of tests being updated (there are a
significant number of other tests left to be updated).
2022-02-15 09:28:02 -05:00

43 lines
1.5 KiB
C

// RUN: %clang_cc1 -emit-llvm < %s > %t
// RUN: FileCheck %s --check-prefix=PRESENT < %t
// RUN: FileCheck %s --check-prefix=ABSENT < %t
// RUN: %clang_cc1 -emit-llvm -Os < %s > %t
// RUN: FileCheck %s --check-prefix=PRESENT < %t
// RUN: FileCheck %s --check-prefix=OPTSIZE < %t
// RUN: %clang_cc1 -emit-llvm -Oz < %s > %t
// RUN: FileCheck %s --check-prefix=PRESENT < %t
// RUN: FileCheck %s --check-prefix=MINSIZE < %t
__attribute__((always_inline))
int test2(void) { return 0; }
// OPTSIZE: @test2{{.*}}[[ATTR2:#[0-9]+]]
// MINSIZE: @test2{{.*}}[[ATTR2:#[0-9]+]]
__attribute__((optnone))
int test3(void) { return 0; }
// PRESENT-DAG: @test3{{.*}}[[ATTR3:#[0-9]+]]
__attribute__((optnone)) __attribute__((cold))
int test4(void) { return test2(); }
// PRESENT-DAG: @test4{{.*}}[[ATTR4:#[0-9]+]]
// Also check that test2 is inlined into test4 (always_inline still works).
// PRESENT-NOT: call i32 @test2
// Check for both noinline and optnone on each optnone function.
// PRESENT-DAG: attributes [[ATTR3]] = { {{.*}}noinline{{.*}}optnone{{.*}} }
// PRESENT-DAG: attributes [[ATTR4]] = { {{.*}}noinline{{.*}}optnone{{.*}} }
// Check that no 'optsize' or 'minsize' attributes appear.
// ABSENT-NOT: optsize
// ABSENT-NOT: minsize
// With -Os, check that 'optsize' appears only on test2.
// OPTSIZE-NOT: optsize
// OPTSIZE: attributes [[ATTR2]] = { {{.*}}optsize{{.*}} }
// OPTSIZE-NOT: optsize
// With -Oz, check that 'minsize' appears only on test2.
// MINSIZE-NOT: minsize
// MINSIZE: attributes [[ATTR2]] = { {{.*}}minsize{{.*}} }
// MINSIZE-NOT: minsize