| Jim Grosbach | 502e0aa | 2010-07-14 17:45:16 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=arm < %s | FileCheck %s |
| 2 | |
| 3 | ; 171 = 0x000000ab |
| 4 | define i64 @f1(i64 %a) { |
| 5 | ; CHECK: f1 |
| 6 | ; CHECK: subs r0, r0, #171 |
| 7 | ; CHECK: sbc r1, r1, #0 |
| 8 | %tmp = sub i64 %a, 171 |
| 9 | ret i64 %tmp |
| 10 | } |
| 11 | |
| 12 | ; 66846720 = 0x03fc0000 |
| 13 | define i64 @f2(i64 %a) { |
| 14 | ; CHECK: f2 |
| Johnny Chen | d05a824 | 2011-04-05 18:41:40 +0000 | [diff] [blame] | 15 | ; CHECK: subs r0, r0, #255, #14 |
| Jim Grosbach | 502e0aa | 2010-07-14 17:45:16 +0000 | [diff] [blame] | 16 | ; CHECK: sbc r1, r1, #0 |
| 17 | %tmp = sub i64 %a, 66846720 |
| 18 | ret i64 %tmp |
| 19 | } |
| 20 | |
| 21 | ; 734439407618 = 0x000000ab00000002 |
| 22 | define i64 @f3(i64 %a) { |
| 23 | ; CHECK: f3 |
| 24 | ; CHECK: subs r0, r0, #2 |
| 25 | ; CHECK: sbc r1, r1, #171 |
| 26 | %tmp = sub i64 %a, 734439407618 |
| 27 | ret i64 %tmp |
| 28 | } |
| 29 | |
| Owen Anderson | df298c9 | 2011-04-06 23:35:59 +0000 | [diff] [blame^] | 30 | define i32 @f4(i32 %x) { |
| 31 | entry: |
| 32 | ; CHECK: f4 |
| 33 | ; CHECK: rsbs |
| 34 | %sub = sub i32 1, %x |
| 35 | %cmp = icmp ugt i32 %sub, 0 |
| 36 | %sel = select i1 %cmp, i32 1, i32 %sub |
| 37 | ret i32 %sel |
| 38 | } |