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.
80 lines
2.2 KiB
80 lines
2.2 KiB
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
; These tests are for Integer BitWidth <= 64 && BitWidth % 2 != 0.
|
|
define i23 @test1(i23 %A) {
|
|
;; A | ~A == -1
|
|
%NotA = xor i23 -1, %A
|
|
%B = or i23 %A, %NotA
|
|
ret i23 %B
|
|
; CHECK-LABEL: @test1
|
|
; CHECK-NEXT: ret i23 -1
|
|
}
|
|
|
|
define i39 @test2(i39 %V, i39 %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 i39 274877906943, -1 ;; C2 = 274877906943
|
|
%N = and i39 %M, 274877906944
|
|
%A = add i39 %V, %N
|
|
%B = and i39 %A, %C1
|
|
%D = and i39 %V, 274877906943
|
|
%R = or i39 %B, %D
|
|
ret i39 %R
|
|
; CHECK-LABEL: @test2
|
|
; CHECK-NEXT: %N = and i39 %M, -274877906944
|
|
; CHECK-NEXT: %A = add i39 %N, %V
|
|
; CHECK-NEXT: ret i39 %A
|
|
}
|
|
|
|
define i43 @test3(i43 %A, i43 %B) {
|
|
;; (~A | ~B) == (~(A & B)) - De Morgan's Law
|
|
%NotA = xor i43 %A, -1
|
|
%NotB = xor i43 %B, -1
|
|
%C1 = or i43 %NotA, %NotB
|
|
ret i43 %C1
|
|
; CHECK-LABEL: @test3
|
|
; CHECK-NEXT: %C1.demorgan = and i43 %A, %B
|
|
; CHECK-NEXT: %C1 = xor i43 %C1.demorgan, -1
|
|
; CHECK-NEXT: ret i43 %C1
|
|
}
|
|
|
|
; These tests are for Integer BitWidth > 64 && BitWidth <= 1024.
|
|
define i1023 @test4(i1023 %A) {
|
|
;; A | ~A == -1
|
|
%NotA = xor i1023 -1, %A
|
|
%B = or i1023 %A, %NotA
|
|
ret i1023 %B
|
|
; CHECK-LABEL: @test4
|
|
; CHECK-NEXT: ret i1023 -1
|
|
}
|
|
|
|
define i399 @test5(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
|
|
; CHECK-LABEL: @test5
|
|
; CHECK-NEXT: %N = and i399 %M, 18446742974197923840
|
|
; CHECK-NEXT: %A = add i399 %N, %V
|
|
; CHECK-NEXT: ret i399 %A
|
|
}
|
|
|
|
define i129 @test6(i129 %A, i129 %B) {
|
|
;; (~A | ~B) == (~(A & B)) - De Morgan's Law
|
|
%NotA = xor i129 %A, -1
|
|
%NotB = xor i129 %B, -1
|
|
%C1 = or i129 %NotA, %NotB
|
|
ret i129 %C1
|
|
; CHECK-LABEL: @test6
|
|
; CHECK-NEXT: %C1.demorgan = and i129 %A, %B
|
|
; CHECK-NEXT: %C1 = xor i129 %C1.demorgan, -1
|
|
; CHECK-NEXT: ret i129 %C1
|
|
}
|