| Dan Gohman | 0a06310 | 2009-09-08 23:54:48 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -march=x86-64 | grep movzbl | count 2 |
| Dan Gohman | 9959b05 | 2009-08-26 14:59:13 +0000 | [diff] [blame] | 2 | |
| 3 | ; Use movzbl to avoid partial-register updates. |
| 4 | |
| 5 | define i32 @foo(i32 %p, i8 zeroext %x) nounwind { |
| 6 | %q = trunc i32 %p to i8 |
| 7 | %r = udiv i8 %q, %x |
| 8 | %s = zext i8 %r to i32 |
| 9 | %t = and i32 %s, 1 |
| 10 | ret i32 %t |
| 11 | } |
| 12 | define i32 @bar(i32 %p, i16 zeroext %x) nounwind { |
| 13 | %q = trunc i32 %p to i16 |
| 14 | %r = udiv i16 %q, %x |
| 15 | %s = zext i16 %r to i32 |
| 16 | %t = and i32 %s, 1 |
| 17 | ret i32 %t |
| 18 | } |