mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 08:23:21 +01:00
36 lines
867 B
LLVM
36 lines
867 B
LLVM
; This test makes sure that or instructions are properly eliminated.
|
|
; This test is for Integer BitWidth > 64 && BitWidth <= 1024.
|
|
;
|
|
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep or
|
|
|
|
|
|
define i777 @test0(i777 %X) {
|
|
%Y = or i777 %X, 0
|
|
ret i777 %Y
|
|
}
|
|
|
|
define i117 @test1(i117 %X) {
|
|
%Y = or i117 %X, -1
|
|
ret i117 %Y
|
|
}
|
|
|
|
define i1023 @test2(i1023 %A) {
|
|
;; A | ~A == -1
|
|
%NotA = xor i1023 -1, %A
|
|
%B = or i1023 %A, %NotA
|
|
ret i1023 %B
|
|
}
|
|
|
|
define i399 @test3(i399 %V, i399 %M) {
|
|
;; If we have: ((V + N) & C1) | (V & C2)
|
|
;; .. and C2 = ~C1 and C2 is 0+1+ and (N & C2) == 0
|
|
;; replace with V+N.
|
|
%C1 = xor i399 274877906943, -1 ;; C2 = 274877906943
|
|
%N = and i399 %M, 18446742974197923840
|
|
%A = add i399 %V, %N
|
|
%B = and i399 %A, %C1
|
|
%D = and i399 %V, 274877906943
|
|
%R = or i399 %B, %D
|
|
ret i399 %R
|
|
}
|