1 ; This test makes sure that add instructions are properly eliminated.
2 ; This test is for Integer BitWidth > 64 && BitWidth <= 1024.
4 ; RUN: opt < %s -instcombine -S | \
5 ; RUN: grep -v OK | not grep add
8 define i111 @test1(i111 %x) {
9 %tmp.2 = shl i111 1, 110
10 %tmp.4 = xor i111 %x, %tmp.2
11 ;; Add of sign bit -> xor of sign bit.
12 %tmp.6 = add i111 %tmp.4, %tmp.2
16 define i65 @test2(i65 %x) {
17 %tmp.0 = shl i65 1, 64
18 %tmp.2 = xor i65 %x, %tmp.0
19 ;; Add of sign bit -> xor of sign bit.
20 %tmp.4 = add i65 %tmp.2, %tmp.0
24 define i1024 @test3(i1024 %x) {
25 %tmp.0 = shl i1024 1, 1023
26 %tmp.2 = xor i1024 %x, %tmp.0
27 ;; Add of sign bit -> xor of sign bit.
28 %tmp.4 = add i1024 %tmp.2, %tmp.0
32 define i128 @test4(i128 %x) {
33 ;; If we have ADD(XOR(AND(X, 0xFF), 0xF..F80), 0x80), it's a sext.
34 %tmp.5 = shl i128 1, 127
35 %tmp.1 = ashr i128 %tmp.5, 120
36 %tmp.2 = xor i128 %x, %tmp.1
37 %tmp.4 = add i128 %tmp.2, %tmp.5
41 define i77 @test6(i77 %x) {
42 ;; (x & 254)+1 -> (x & 254)|1
43 %tmp.2 = and i77 %x, 562949953421310
44 %tmp.4 = add i77 %tmp.2, 1