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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
@g = global i32 0
; PR30486
define i32 @single_case() {
; CHECK-LABEL: @single_case(
; CHECK-NEXT: switch i32 ptrtoint (i32* @g to i32), label %x [
; CHECK-NEXT: ]
; CHECK: x:
; CHECK-NEXT: ret i32 0
;
switch i32 add (i32 ptrtoint (i32* @g to i32), i32 -1), label %x []
x:
ret i32 0
}
define i32 @multiple_cases() {
; CHECK-LABEL: @multiple_cases(
; CHECK-NEXT: switch i32 ptrtoint (i32* @g to i32), label %x [
; CHECK-NEXT: i32 2, label %one
; CHECK-NEXT: i32 3, label %two
; CHECK-NEXT: ]
; CHECK: x:
; CHECK-NEXT: ret i32 0
; CHECK: one:
; CHECK-NEXT: ret i32 1
; CHECK: two:
; CHECK-NEXT: ret i32 2
;
switch i32 add (i32 ptrtoint (i32* @g to i32), i32 -1), label %x [
i32 1, label %one
i32 2, label %two
]
x:
ret i32 0
one:
ret i32 1
two:
ret i32 2
}
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