Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

stackrealign-main.c
// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm -o - -mstack-alignment=64 %s | FileCheck %s
// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm -o - %s | FileCheck %s --check-prefix=DEFAULT

// CHECK-LABEL: define{{.*}} void @other()
// CHECK: [[OTHER:#[0-9]+]]
// CHECK: {
void other(void) {}

// CHECK-LABEL: define{{.*}} i32 @main(
// CHECK: [[MAIN:#[0-9]+]]
// CHECK: {
int main(int argc, char **argv) {
  other();
  return 0;
}

// CHECK: attributes [[OTHER]] = { noinline nounwind optnone
// CHECK-NOT: "stackrealign"
// CHECK: }
// CHECK: attributes [[MAIN]] = { noinline nounwind optnone {{.*}}"stackrealign"{{.*}} }
// CHECK: !{i32 1, !"override-stack-alignment", i32 64}
// DEFAULT-NOT: "override-stack-alignment"