mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-10-31 09:11:13 +00:00
5d787bb93e
types. These tests mimic the integer test cases in the normal InstCombine test suite but use "strange" integer bit widths. Most tests written by Zhou Sheng, a few by me. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35284 91177308-0d34-0410-b5e6-96231b3b80d8
60 lines
1.3 KiB
LLVM
60 lines
1.3 KiB
LLVM
; This test makes sure that and instructions are properly eliminated.
|
|
; This test is for Integer BitWidth <= 64 && BitWidth % 8 != 0.
|
|
|
|
; RUN: llvm-as < %s | opt -instcombine -disable-output &&
|
|
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep 'and '
|
|
|
|
implementation
|
|
|
|
define i39 @test0(i39 %A) {
|
|
%B = and i39 %A, 0 ; zero result
|
|
ret i39 %B
|
|
}
|
|
|
|
define i47 @test1(i47 %A, i47 %B) {
|
|
;; (~A & ~B) == (~(A | B)) - De Morgan's Law
|
|
%NotA = xor i47 %A, -1
|
|
%NotB = xor i47 %B, -1
|
|
%C1 = and i47 %NotA, %NotB
|
|
ret i47 %C1
|
|
}
|
|
|
|
define i15 @test2(i15 %x) {
|
|
%tmp.2 = and i15 %x, -1 ; noop
|
|
ret i15 %tmp.2
|
|
}
|
|
|
|
define i23 @test3(i23 %x) {
|
|
%tmp.0 = and i23 %x, 127
|
|
%tmp.2 = and i23 %tmp.0, 128
|
|
ret i23 %tmp.2
|
|
}
|
|
|
|
define i1 @test4(i37 %x) {
|
|
%A = and i37 %x, -2147483648
|
|
%B = icmp ne i37 %A, 0
|
|
ret i1 %B
|
|
}
|
|
|
|
define i7 @test5(i7 %A, i7* %P) {
|
|
%B = or i7 %A, 3
|
|
%C = xor i7 %B, 12
|
|
store i7 %C, i7* %P
|
|
%r = and i7 %C, 3
|
|
ret i7 %r
|
|
}
|
|
|
|
define i7 @test6(i7 %A, i7 %B) {
|
|
;; ~(~X & Y) --> (X | ~Y)
|
|
%t0 = xor i7 %A, -1
|
|
%t1 = and i7 %t0, %B
|
|
%r = xor i7 %t1, -1
|
|
ret i7 %r
|
|
}
|
|
|
|
define i47 @test7(i47 %A) {
|
|
%X = ashr i47 %A, 39 ;; sign extend
|
|
%C1 = and i47 %X, 255
|
|
ret i47 %C1
|
|
}
|