|  | 
|  | 1 | +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6 | 
| 1 | 2 | ; RUN: llc -mtriple=armv6t2-eabi %s -o - | FileCheck %s | 
| 2 | 3 | 
 | 
| 3 | 4 | define i64 @f1(i64 %a, i64 %b) { | 
| 4 | 5 | ; CHECK-LABEL: f1: | 
| 5 |  | -; CHECK: subs r | 
| 6 |  | -; CHECK: sbc r | 
|  | 6 | +; CHECK:       @ %bb.0: @ %entry | 
|  | 7 | +; CHECK-NEXT:    subs r0, r0, r2 | 
|  | 8 | +; CHECK-NEXT:    sbc r1, r1, r3 | 
|  | 9 | +; CHECK-NEXT:    bx lr | 
| 7 | 10 | entry: | 
| 8 |  | -	%tmp = sub i64 %a, %b | 
| 9 |  | -	ret i64 %tmp | 
|  | 11 | +  %tmp = sub i64 %a, %b | 
|  | 12 | +  ret i64 %tmp | 
| 10 | 13 | } | 
| 11 | 14 | 
 | 
| 12 | 15 | define i64 @f2(i64 %a, i64 %b) { | 
| 13 | 16 | ; CHECK-LABEL: f2: | 
| 14 |  | -; CHECK: lsl  r | 
| 15 |  | -; CHECK: orr  r | 
| 16 |  | -; CHECK: rsbs r | 
| 17 |  | -; CHECK: sbc  r | 
|  | 17 | +; CHECK:       @ %bb.0: @ %entry | 
|  | 18 | +; CHECK-NEXT:    lsl r1, r1, #1 | 
|  | 19 | +; CHECK-NEXT:    orr r1, r1, r0, lsr #31 | 
|  | 20 | +; CHECK-NEXT:    rsbs r0, r2, r0, lsl #1 | 
|  | 21 | +; CHECK-NEXT:    sbc r1, r1, r3 | 
|  | 22 | +; CHECK-NEXT:    bx lr | 
| 18 | 23 | entry: | 
| 19 |  | -        %tmp1 = shl i64 %a, 1 | 
| 20 |  | -	%tmp2 = sub i64 %tmp1, %b | 
| 21 |  | -	ret i64 %tmp2 | 
|  | 24 | +  %tmp1 = shl i64 %a, 1 | 
|  | 25 | +  %tmp2 = sub i64 %tmp1, %b | 
|  | 26 | +  ret i64 %tmp2 | 
| 22 | 27 | } | 
| 23 | 28 | 
 | 
| 24 | 29 | ; add with live carry | 
| 25 | 30 | define i64 @f3(i32 %al, i32 %bl) { | 
| 26 | 31 | ; CHECK-LABEL: f3: | 
| 27 |  | -; CHECK: adds r | 
| 28 |  | -; CHECK: adc r | 
|  | 32 | +; CHECK:       @ %bb.0: @ %entry | 
|  | 33 | +; CHECK-NEXT:    adds r0, r0, r1 | 
|  | 34 | +; CHECK-NEXT:    mov r2, #0 | 
|  | 35 | +; CHECK-NEXT:    adcs r0, r1, #0 | 
|  | 36 | +; CHECK-NEXT:    adc r1, r2, #0 | 
|  | 37 | +; CHECK-NEXT:    bx lr | 
| 29 | 38 | entry: | 
| 30 |  | -        ; unsigned wide add | 
| 31 |  | -        %aw = zext i32 %al to i64 | 
| 32 |  | -        %bw = zext i32 %bl to i64 | 
| 33 |  | -        %cw = add i64 %aw, %bw | 
| 34 |  | -        ; ch == carry bit | 
| 35 |  | -        %ch = lshr i64 %cw, 32 | 
| 36 |  | -	%dw = add i64 %ch, %bw | 
| 37 |  | -	ret i64 %dw | 
|  | 39 | +  ; unsigned wide add | 
|  | 40 | +  %aw = zext i32 %al to i64 | 
|  | 41 | +  %bw = zext i32 %bl to i64 | 
|  | 42 | +  %cw = add i64 %aw, %bw | 
|  | 43 | +  ; ch == carry bit | 
|  | 44 | +  %ch = lshr i64 %cw, 32 | 
|  | 45 | +  %dw = add i64 %ch, %bw | 
|  | 46 | +  ret i64 %dw | 
| 38 | 47 | } | 
| 39 | 48 | 
 | 
| 40 | 49 | ; rdar://10073745 | 
| 41 | 50 | define i64 @f4(i64 %x) nounwind readnone { | 
| 42 |  | -entry: | 
| 43 | 51 | ; CHECK-LABEL: f4: | 
| 44 |  | -; CHECK: rsbs r | 
| 45 |  | -; CHECK: rsc r | 
|  | 52 | +; CHECK:       @ %bb.0: @ %entry | 
|  | 53 | +; CHECK-NEXT:    rsbs r0, r0, #0 | 
|  | 54 | +; CHECK-NEXT:    rsc r1, r1, #0 | 
|  | 55 | +; CHECK-NEXT:    bx lr | 
|  | 56 | +entry: | 
| 46 | 57 |   %0 = sub nsw i64 0, %x | 
| 47 | 58 |   ret i64 %0 | 
| 48 | 59 | } | 
| 49 | 60 | 
 | 
| 50 | 61 | ; rdar://12559385 | 
| 51 | 62 | define i64 @f5(i32 %vi) { | 
| 52 |  | -entry: | 
| 53 | 63 | ; CHECK-LABEL: f5: | 
| 54 |  | -; CHECK: movw [[REG:r[0-9]+]], #36102 | 
| 55 |  | -; CHECK: sbc r{{[0-9]+}}, r{{[0-9]+}}, [[REG]] | 
| 56 |  | -    %v0 = zext i32 %vi to i64 | 
| 57 |  | -    %v1 = xor i64 %v0, -155057456198619 | 
| 58 |  | -    %v4 = add i64 %v1, 155057456198619 | 
| 59 |  | -    %v5 = add i64 %v4, %v1 | 
| 60 |  | -    ret i64 %v5 | 
|  | 64 | +; CHECK:       @ %bb.0: @ %entry | 
|  | 65 | +; CHECK-NEXT:    movw r1, #19493 | 
|  | 66 | +; CHECK-NEXT:    movw r2, #29433 | 
|  | 67 | +; CHECK-NEXT:    movt r1, #57191 | 
|  | 68 | +; CHECK-NEXT:    eor r0, r0, r1 | 
|  | 69 | +; CHECK-NEXT:    movw r3, #46043 | 
|  | 70 | +; CHECK-NEXT:    movt r2, #65535 | 
|  | 71 | +; CHECK-NEXT:    adds r0, r0, r0 | 
|  | 72 | +; CHECK-NEXT:    movw r1, #36102 | 
|  | 73 | +; CHECK-NEXT:    sbc r2, r2, r1 | 
|  | 74 | +; CHECK-NEXT:    movt r3, #8344 | 
|  | 75 | +; CHECK-NEXT:    adds r0, r0, r3 | 
|  | 76 | +; CHECK-NEXT:    adc r1, r2, r1 | 
|  | 77 | +; CHECK-NEXT:    bx lr | 
|  | 78 | +entry: | 
|  | 79 | +  %v0 = zext i32 %vi to i64 | 
|  | 80 | +  %v1 = xor i64 %v0, -155057456198619 | 
|  | 81 | +  %v4 = add i64 %v1, 155057456198619 | 
|  | 82 | +  %v5 = add i64 %v4, %v1 | 
|  | 83 | +  ret i64 %v5 | 
| 61 | 84 | } | 
0 commit comments