| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 1 | ; Linear scan does not currently coalesce any two variables that have |
| 2 | ; overlapping live intervals. When two overlapping intervals have the same |
| 3 | ; value, they can be joined though. |
| 4 | ; |
| Tanya Lattner | 348c618 | 2008-03-25 04:26:08 +0000 | [diff] [blame] | 5 | ; RUN: llvm-as < %s | llc -march=x86 -regalloc=linearscan | \ |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 6 | ; RUN: not grep {mov %\[A-Z\]\\\{2,3\\\}, %\[A-Z\]\\\{2,3\\\}} |
| 7 | |
| Tanya Lattner | 348c618 | 2008-03-25 04:26:08 +0000 | [diff] [blame] | 8 | define i64 @test(i64 %x) { |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 9 | entry: |
| Tanya Lattner | 348c618 | 2008-03-25 04:26:08 +0000 | [diff] [blame] | 10 | %tmp.1 = mul i64 %x, 4294967297 ; <i64> [#uses=1] |
| 11 | ret i64 %tmp.1 |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 12 | } |
| Tanya Lattner | 348c618 | 2008-03-25 04:26:08 +0000 | [diff] [blame] | 13 | |