| James Y Knight | f238d17 | 2015-07-08 16:25:12 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -march=sparc | FileCheck %s |
| 2 | ; RUN: llc -O0 < %s -march=sparc | FileCheck %s |
| 3 | |
| 4 | ;; llc -O0 used to try to spill Y to the stack, which isn't possible, |
| 5 | ;; and then crashed. Additionally, in -O1, it would omit the second |
| 6 | ;; apparently-redundant wr to %y, which is not actually redundant |
| 7 | ;; because the spec says to treat %y as potentially-written by udiv. |
| 8 | |
| 9 | ; CHECK-LABEL: two_divides: |
| 10 | ; CHECK: wr %g0, %g0, %y |
| 11 | ; CHECK: udiv |
| 12 | ; CHECK: wr %g0, %g0, %y |
| 13 | ; CHECK: udiv |
| 14 | ; CHECK: add |
| 15 | |
| 16 | define i32 @two_divides(i32 %a, i32 %b) { |
| 17 | %r = udiv i32 %a, %b |
| 18 | %r2 = udiv i32 %b, %a |
| 19 | %r3 = add i32 %r, %r2 |
| 20 | ret i32 %r3 |
| 21 | } |