mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 16:33:37 +01:00
35 lines
928 B
LLVM
35 lines
928 B
LLVM
; This test makes sure that add instructions are properly eliminated.
|
|
; This test is for Integer BitWidth <= 64 && BitWidth % 8 != 0.
|
|
|
|
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | \
|
|
; RUN: grep -v OK | not grep add
|
|
|
|
|
|
define i1 @test1(i1 %x) {
|
|
%tmp.2 = xor i1 %x, 1
|
|
;; Add of sign bit -> xor of sign bit.
|
|
%tmp.4 = add i1 %tmp.2, 1
|
|
ret i1 %tmp.4
|
|
}
|
|
|
|
define i47 @test2(i47 %x) {
|
|
%tmp.2 = xor i47 %x, 70368744177664
|
|
;; Add of sign bit -> xor of sign bit.
|
|
%tmp.4 = add i47 %tmp.2, 70368744177664
|
|
ret i47 %tmp.4
|
|
}
|
|
|
|
define i15 @test3(i15 %x) {
|
|
%tmp.2 = xor i15 %x, 16384
|
|
;; Add of sign bit -> xor of sign bit.
|
|
%tmp.4 = add i15 %tmp.2, 16384
|
|
ret i15 %tmp.4
|
|
}
|
|
|
|
define i49 @test6(i49 %x) {
|
|
;; (x & 254)+1 -> (x & 254)|1
|
|
%tmp.2 = and i49 %x, 562949953421310
|
|
%tmp.4 = add i49 %tmp.2, 1
|
|
ret i49 %tmp.4
|
|
}
|