| // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -disable-llvm-passes -o - %s -O1 | FileCheck %s |
| // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -disable-llvm-passes -o - -x c++ %s -O1 | FileCheck %s |
| // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s -O0 | FileCheck %s --check-prefix=CHECK_O0 |
| |
| // When optimizing, the builtin should be converted to metadata. |
| // When not optimizing, there should be no metadata created for the builtin. |
| // In both cases, the builtin should be removed from the code. |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| void foo(); |
| void branch(int x) { |
| // CHECK-LABEL: define void @branch( |
| |
| // CHECK-NOT: builtin_unpredictable |
| // CHECK: !unpredictable [[METADATA:.+]] |
| |
| // CHECK_O0-NOT: builtin_unpredictable |
| // CHECK_O0-NOT: !unpredictable |
| |
| if (__builtin_unpredictable(x > 0)) |
| foo (); |
| } |
| |
| int unpredictable_switch(int x) { |
| // CHECK-LABEL: @unpredictable_switch( |
| |
| // CHECK-NOT: builtin_unpredictable |
| // CHECK: !unpredictable [[METADATA:.+]] |
| |
| // CHECK_O0-NOT: builtin_unpredictable |
| // CHECK_O0-NOT: !unpredictable |
| |
| switch(__builtin_unpredictable(x)) { |
| default: |
| return 0; |
| case 0: |
| case 1: |
| case 2: |
| return 1; |
| case 5: |
| return 5; |
| }; |
| |
| return 0; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| |
| // CHECK: [[METADATA]] = !{} |
| |