xref: /llvm-project/llvm/test/CodeGen/M68k/Arith/imul-neg.ll (revision 78b16ccf2b5c4ba4ebd7f1e2a2fc1dcad0e1a343)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc < %s -mtriple=m68k-linux | FileCheck %s
3
4define i8 @mul255_8(i8 %A) {
5; CHECK-LABEL: mul255_8:
6; CHECK:         .cfi_startproc
7; CHECK-NEXT:  ; %bb.0:
8; CHECK-NEXT:    move.b	(7,%sp), %d0
9; CHECK-NEXT:    neg.b	%d0
10; CHECK-NEXT:    rts
11    %mul = mul i8 %A, 255
12    ret i8 %mul
13}
14
15define i16 @mul65535_16(i16 %A) {
16; CHECK-LABEL: mul65535_16:
17; CHECK:         .cfi_startproc
18; CHECK-NEXT:  ; %bb.0:
19; CHECK-NEXT:    move.w	(6,%sp), %d0
20; CHECK-NEXT:    neg.w	%d0
21; CHECK-NEXT:    rts
22    %mul = mul i16 %A, 65535
23    ret i16 %mul
24}
25
26define i32 @mul4294967295_32(i32 %A) {
27; CHECK-LABEL: mul4294967295_32:
28; CHECK:         .cfi_startproc
29; CHECK-NEXT:  ; %bb.0:
30; CHECK-NEXT:    move.l	(4,%sp), %d0
31; CHECK-NEXT:    neg.l	%d0
32; CHECK-NEXT:    rts
33    %mul = mul i32 %A, 4294967295
34    ret i32 %mul
35}
36
37; NOTE: If returning a 64-bit integer, d0 will be the higher 32-bit!
38define i64 @mul18446744073709551615_64(i64 %A) {
39; CHECK-LABEL: mul18446744073709551615_64:
40; CHECK:         .cfi_startproc
41; CHECK-NEXT:  ; %bb.0:
42; CHECK-NEXT:    move.l	(4,%sp), %d0
43; CHECK-NEXT:    move.l	(8,%sp), %d1
44; CHECK-NEXT:    neg.l	%d1
45; CHECK-NEXT:    negx.l	%d0
46; CHECK-NEXT:    rts
47    %mul = mul i64 %A, 18446744073709551615
48    ret i64 %mul
49}
50