66 lines
1.6 KiB
LLVM
66 lines
1.6 KiB
LLVM
; RUN: opt < %s -instsimplify -S | FileCheck %s
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; Test the case where integer BitWidth <= 64 && BitWidth % 2 != 0.
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define i39 @test1(i39 %V, i39 %M) {
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;; If we have: ((V + N) & C1) | (V & C2)
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;; .. and C2 = ~C1 and C2 is 0+1+ and (N & C2) == 0
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;; replace with V+N.
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%C1 = xor i39 274877906943, -1 ;; C2 = 274877906943
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%N = and i39 %M, 274877906944
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%A = add i39 %V, %N
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%B = and i39 %A, %C1
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%D = and i39 %V, 274877906943
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%R = or i39 %B, %D
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ret i39 %R
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; CHECK-LABEL: @test1
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; CHECK-NEXT: and {{.*}}, -274877906944
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; CHECK-NEXT: add
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; CHECK-NEXT: ret
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}
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define i7 @test2(i7 %X) {
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%Y = or i7 %X, 0
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ret i7 %Y
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; CHECK-LABEL: @test2
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; CHECK-NEXT: ret i7 %X
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}
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define i17 @test3(i17 %X) {
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%Y = or i17 %X, -1
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ret i17 %Y
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; CHECK-LABEL: @test3
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; CHECK-NEXT: ret i17 -1
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}
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; Test the case where Integer BitWidth > 64 && BitWidth <= 1024.
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define i399 @test4(i399 %V, i399 %M) {
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;; If we have: ((V + N) & C1) | (V & C2)
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;; .. and C2 = ~C1 and C2 is 0+1+ and (N & C2) == 0
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;; replace with V+N.
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%C1 = xor i399 274877906943, -1 ;; C2 = 274877906943
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%N = and i399 %M, 18446742974197923840
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%A = add i399 %V, %N
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%B = and i399 %A, %C1
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%D = and i399 %V, 274877906943
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%R = or i399 %B, %D
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ret i399 %R
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; CHECK-LABEL: @test4
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; CHECK-NEXT: and {{.*}}, 18446742974197923840
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; CHECK-NEXT: add
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; CHECK-NEXT: ret
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}
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define i777 @test5(i777 %X) {
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%Y = or i777 %X, 0
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ret i777 %Y
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; CHECK-LABEL: @test5
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; CHECK-NEXT: ret i777 %X
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}
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define i117 @test6(i117 %X) {
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%Y = or i117 %X, -1
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ret i117 %Y
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; CHECK-LABEL: @test6
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; CHECK-NEXT: ret i117 -1
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}
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