| Roger Ferrer Ibanez | e8d4e88 | 2017-12-13 10:45:21 +0000 | [diff] [blame] | 1 | ; RUN: llc -O2 -mtriple armv7a < %s | FileCheck --check-prefix=ARM %s |
| 2 | |
| 3 | ; RUN: llc -O2 -mtriple thumbv6m < %s | FileCheck --check-prefix=THUMB1 %s |
| 4 | ; RUN: llc -O2 -mtriple thumbv8m.base < %s | FileCheck --check-prefix=THUMB1 %s |
| 5 | |
| 6 | ; RUN: llc -O2 -mtriple thumbv7a < %s | FileCheck --check-prefix=THUMB %s |
| 7 | ; RUN: llc -O2 -mtriple thumbv8m.main < %s | FileCheck --check-prefix=THUMB %s |
| 8 | |
| 9 | define void @fn1(i32 %a, i32 %b, i32 %c) local_unnamed_addr #0 { |
| 10 | entry: |
| 11 | |
| 12 | ; ARM: rsb r2, r2, #1 |
| 13 | ; ARM: adds r0, r1, r0 |
| 14 | ; ARM: movw r1, #65535 |
| 15 | ; ARM: sxth r2, r2 |
| 16 | ; ARM: adc r0, r2, #0 |
| 17 | ; ARM: tst r0, r1 |
| 18 | ; ARM: bxeq lr |
| 19 | ; ARM: .LBB0_1: |
| 20 | ; ARM: b .LBB0_1 |
| 21 | |
| 22 | ; THUMB1: movs r3, #1 |
| 23 | ; THUMB1: subs r2, r3, r2 |
| 24 | ; THUMB1: sxth r2, r2 |
| 25 | ; THUMB1: movs r3, #0 |
| 26 | ; THUMB1: adds r0, r1, r0 |
| 27 | ; THUMB1: adcs r3, r2 |
| 28 | ; THUMB1: lsls r0, r3, #16 |
| 29 | ; THUMB1: beq .LBB0_2 |
| 30 | ; THUMB1: .LBB0_1: |
| 31 | ; THUMB1: b .LBB0_1 |
| 32 | |
| 33 | ; THUMB: rsb.w r2, r2, #1 |
| 34 | ; THUMB: adds r0, r0, r1 |
| 35 | ; THUMB: sxth r2, r2 |
| 36 | ; THUMB: adc r0, r2, #0 |
| 37 | ; THUMB: lsls r0, r0, #16 |
| 38 | ; THUMB: it eq |
| 39 | ; THUMB: bxeq lr |
| 40 | ; THUMB: .LBB0_1: |
| 41 | ; THUMB: b .LBB0_1 |
| 42 | |
| 43 | %add = add i32 %b, %a |
| 44 | %cmp = icmp ult i32 %add, %b |
| 45 | %conv = zext i1 %cmp to i32 |
| 46 | %sub = sub i32 1, %c |
| 47 | %add1 = add i32 %sub, %conv |
| 48 | %conv2 = trunc i32 %add1 to i16 |
| 49 | %tobool = icmp eq i16 %conv2, 0 |
| 50 | br i1 %tobool, label %if.end, label %for.cond.preheader |
| 51 | |
| 52 | for.cond.preheader: ; preds = %entry |
| 53 | br label %for.cond |
| 54 | |
| 55 | for.cond: ; preds = %for.cond.preheader, %for.cond |
| 56 | br label %for.cond |
| 57 | |
| 58 | if.end: ; preds = %entry |
| 59 | ret void |
| 60 | } |