blob: 3f8f5716604a63369348a6089d67ed571ab54d54 [file] [log] [blame]
; RUN: opt -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
declare i32 @f(i32 %val)
; Check that eliminating cases with unreachable branches keeps
; prof branch_weights metadata consistent with switch instruction.
define i32 @test_switch_to_unreachable(i32 %val) {
; CHECK-LABEL: test_switch_to_unreachable
; CHECK: switch
; CHECK-NOT: i32 0, label %on0
switch i32 %val, label %otherwise [
i32 0, label %on0
i32 1, label %on1
i32 2, label %on2
], !prof !{!"branch_weights", i32 99, i32 0, i32 1, i32 2}
; CHECK: !prof ![[MD0:[0-9]+]]
otherwise:
%result = call i32 @f(i32 -1)
ret i32 %result
on0:
unreachable
ret i32 125
on1:
%result1 = call i32 @f(i32 -2)
ret i32 %result1
on2:
%result2 = call i32 @f(i32 -3)
ret i32 %result2
}
; CHECK: ![[MD0]] = !{!"branch_weights", i32 99, i32 2, i32 1}