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| ; RUN: opt < %s -lowerswitch -S | FileCheck %s
| ;
| ; The switch is lowered with a single icmp.
| ; CHECK: icmp
| ; CHECK-NOT: icmp
| ;
| ;int foo(int a) {
| ;
| ; switch (a) {
| ; case 0:
| ; return 10;
| ; case 1:
| ; return 3;
| ; default:
| ; __builtin_unreachable();
| ; }
| ;
| ;}
|
| define i32 @foo(i32 %a) {
| %1 = alloca i32, align 4
| %2 = alloca i32, align 4
| store i32 %a, i32* %2, align 4
| %3 = load i32, i32* %2, align 4
| switch i32 %3, label %6 [
| i32 0, label %4
| i32 1, label %5
| ]
|
| ; <label>:4
| store i32 10, i32* %1
| br label %7
|
| ; <label>:5
| store i32 3, i32* %1
| br label %7
|
| ; <label>:6
| unreachable
|
| ; <label>:7
| %8 = load i32, i32* %1
| ret i32 %8
| }
|
|
