blob: a6475d7ef116ce3e5d7baaf3f42fed9fd8cd3b85 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
// RUN: %clang_cc1 %s -O3 -emit-llvm -o - | FileCheck %s
//
// PR13214
// No assumption may be made about the order that a frontend emits branch
// targets (basic blocks). However, the backend's basic block layout makes an
// attempt to preserve source order of control flow, and any bias toward source
// order must start with the frontend.
//
// Note that the frontend inverts branches to simplify the condition, so the
// order of a branch instruction's labels cannot be used as a source order bias.
void calla();
void callb();
void callc();
// CHECK: @test1
// CHECK: @calla
// CHECK: @callb
// CHECK: @callc
// CHECK: ret void
void test1(int a) {
if (a)
calla();
else
callb();
callc();
}
// CHECK: @test2
// CHECK: @callb
// CHECK: @calla
// CHECK: @callc
// CHECK: ret void
void test2(int a) {
if (!a)
callb();
else
calla();
callc();
}
|
