From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- clang/test/CodeGen/builtin-expect.c | 47 +++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 clang/test/CodeGen/builtin-expect.c (limited to 'clang/test/CodeGen/builtin-expect.c') diff --git a/clang/test/CodeGen/builtin-expect.c b/clang/test/CodeGen/builtin-expect.c new file mode 100644 index 0000000..664c6b6 --- /dev/null +++ b/clang/test/CodeGen/builtin-expect.c @@ -0,0 +1,47 @@ +// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s + +int x; +int y(void); +void foo(); +void FUNC() { +// CHECK: [[call:%.*]] = call i32 @y + if (__builtin_expect (x, y())) + foo (); +} + +// rdar://9330105 +void isigprocmask(void); +long bar(); + +int main() { + (void) __builtin_expect((isigprocmask(), 0), bar()); +} + +// CHECK: call void @isigprocmask() +// CHECK: [[C:%.*]] = call i64 (...)* @bar() + + +// CHECK: @test1 +int test1(int x) { +// CHECK: @llvm.expect + if (__builtin_expect (x, 1)) + return 0; + return x; +} + +// CHECK: @test2 +int test2(int x) { +// CHECK: @llvm.expect + switch(__builtin_expect(x, 5)) { + default: + return 0; + case 0: + case 1: + case 2: + return 1; + case 5: + return 5; + }; + + return 0; +} -- cgit v1.2.3