You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
35 lines
910 B
35 lines
910 B
; This test makes sure that add instructions are properly eliminated.
|
|
; This test is for Integer BitWidth <= 64 && BitWidth % 8 != 0.
|
|
|
|
; RUN: opt < %s -instcombine -S | \
|
|
; RUN: grep -v OK | not grep add
|
|
|
|
|
|
define i1 @test1(i1 %x) {
|
|
%tmp.2 = xor i1 %x, 1
|
|
;; Add of sign bit -> xor of sign bit.
|
|
%tmp.4 = add i1 %tmp.2, 1
|
|
ret i1 %tmp.4
|
|
}
|
|
|
|
define i47 @test2(i47 %x) {
|
|
%tmp.2 = xor i47 %x, 70368744177664
|
|
;; Add of sign bit -> xor of sign bit.
|
|
%tmp.4 = add i47 %tmp.2, 70368744177664
|
|
ret i47 %tmp.4
|
|
}
|
|
|
|
define i15 @test3(i15 %x) {
|
|
%tmp.2 = xor i15 %x, 16384
|
|
;; Add of sign bit -> xor of sign bit.
|
|
%tmp.4 = add i15 %tmp.2, 16384
|
|
ret i15 %tmp.4
|
|
}
|
|
|
|
define i49 @test6(i49 %x) {
|
|
;; (x & 254)+1 -> (x & 254)|1
|
|
%tmp.2 = and i49 %x, 562949953421310
|
|
%tmp.4 = add i49 %tmp.2, 1
|
|
ret i49 %tmp.4
|
|
}
|