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|
; RUN: opt < %s -instsimplify -S | FileCheck %s
define i32 @test1(i32 %A) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: ret i32 %A
;
%B = or i32 %A, 0
ret i32 %B
}
define i32 @test2(i32 %A) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: ret i32 -1
;
%B = or i32 %A, -1
ret i32 %B
}
define i8 @test2a(i8 %A) {
; CHECK-LABEL: @test2a(
; CHECK-NEXT: ret i8 -1
;
%B = or i8 %A, -1
ret i8 %B
}
define i1 @test3(i1 %A) {
; CHECK-LABEL: @test3(
; CHECK-NEXT: ret i1 %A
;
%B = or i1 %A, false
ret i1 %B
}
define i1 @test4(i1 %A) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: ret i1 true
;
%B = or i1 %A, true
ret i1 %B
}
define i1 @test5(i1 %A) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: ret i1 %A
;
%B = or i1 %A, %A
ret i1 %B
}
define i32 @test6(i32 %A) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: ret i32 %A
;
%B = or i32 %A, %A
ret i32 %B
}
; A | ~A == -1
define i32 @test7(i32 %A) {
; CHECK-LABEL: @test7(
; CHECK-NEXT: ret i32 -1
;
%NotA = xor i32 %A, -1
%B = or i32 %A, %NotA
ret i32 %B
}
define i8 @test8(i8 %A) {
; CHECK-LABEL: @test8(
; CHECK-NEXT: ret i8 -1
;
%B = or i8 %A, -2
%C = or i8 %B, 1
ret i8 %C
}
; Test that (A|c1)|(B|c2) == (A|B)|(c1|c2)
define i8 @test9(i8 %A, i8 %B) {
; CHECK-LABEL: @test9(
; CHECK-NEXT: ret i8 -1
;
%C = or i8 %A, 1
%D = or i8 %B, -2
%E = or i8 %C, %D
ret i8 %E
}
define i8 @test10(i8 %A) {
; CHECK-LABEL: @test10(
; CHECK-NEXT: ret i8 -2
;
%B = or i8 %A, 1
%C = and i8 %B, -2
; (X & C1) | C2 --> (X | C2) & (C1|C2)
%D = or i8 %C, -2
ret i8 %D
}
define i8 @test11(i8 %A) {
; CHECK-LABEL: @test11(
; CHECK-NEXT: ret i8 -1
;
%B = or i8 %A, -2
%C = xor i8 %B, 13
; (X ^ C1) | C2 --> (X | C2) ^ (C1&~C2)
%D = or i8 %C, 1
%E = xor i8 %D, 12
ret i8 %E
}
; Test the case where integer BitWidth <= 64 && BitWidth % 2 != 0.
define i39 @test1_apint(i39 %V, i39 %M) {
; CHECK-LABEL: @test1_apint(
; CHECK: [[N:%.*]] = and i39 %M, -274877906944
; CHECK-NEXT: [[A:%.*]] = add i39 %V, [[N]]
; CHECK-NEXT: ret i39 [[A]]
;
;; 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
}
define i7 @test2_apint(i7 %X) {
; CHECK-LABEL: @test2_apint(
; CHECK: ret i7 %X
;
%Y = or i7 %X, 0
ret i7 %Y
}
define i17 @test3_apint(i17 %X) {
; CHECK-LABEL: @test3_apint(
; CHECK: ret i17 -1
;
%Y = or i17 %X, -1
ret i17 %Y
}
; Test the case where Integer BitWidth > 64 && BitWidth <= 1024.
define i399 @test4_apint(i399 %V, i399 %M) {
; CHECK-LABEL: @test4_apint(
; CHECK: [[N:%.*]] = and i399 %M, 18446742974197923840
; CHECK-NEXT: [[A:%.*]] = add i399 %V, [[N]]
; CHECK-NEXT: ret i399 [[A]]
;
;; 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
}
define i777 @test5_apint(i777 %X) {
; CHECK-LABEL: @test5_apint(
; CHECK: ret i777 %X
;
%Y = or i777 %X, 0
ret i777 %Y
}
define i117 @test6_apint(i117 %X) {
; CHECK-LABEL: @test6_apint(
; CHECK: ret i117 -1
;
%Y = or i117 %X, -1
ret i117 %Y
}
|
