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// 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);
void callb(void);
void callc(void);
// 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();
}
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