| Rafael Espindola | a6ad823 | 2011-06-14 23:47:36 +0000 | [diff] [blame^] | 1 | ; RUN: llc -mtriple=x86_64-pc-linux-gnu -tail-merge-threshold 2 < %s | FileCheck %s |
| Rafael Espindola | f924dea | 2011-06-14 15:31:54 +0000 | [diff] [blame] | 2 | |
| 3 | ; Test that we still do some merging if a block has more than |
| 4 | ; tail-merge-threshold predecessors. |
| 5 | |
| Rafael Espindola | 1c61990 | 2011-06-14 22:24:32 +0000 | [diff] [blame] | 6 | ; CHECK: callq bar |
| 7 | ; CHECK: callq bar |
| 8 | ; CHECK: callq bar |
| 9 | ; CHECK-NOT: callq |
| Rafael Espindola | f924dea | 2011-06-14 15:31:54 +0000 | [diff] [blame] | 10 | |
| 11 | declare void @bar() |
| 12 | |
| 13 | define void @foo(i32 %xxx) { |
| 14 | entry: |
| 15 | switch i32 %xxx, label %bb4 [ |
| 16 | i32 0, label %bb0 |
| 17 | i32 1, label %bb1 |
| 18 | i32 2, label %bb2 |
| 19 | i32 3, label %bb3 |
| 20 | ] |
| 21 | |
| 22 | bb0: |
| 23 | call void @bar() |
| 24 | br label %bb5 |
| 25 | |
| 26 | bb1: |
| 27 | call void @bar() |
| 28 | br label %bb5 |
| 29 | |
| 30 | bb2: |
| 31 | call void @bar() |
| 32 | br label %bb5 |
| 33 | |
| 34 | bb3: |
| 35 | call void @bar() |
| 36 | br label %bb5 |
| 37 | |
| 38 | bb4: |
| 39 | call void @bar() |
| 40 | br label %bb5 |
| 41 | |
| 42 | bb5: |
| 43 | ret void |
| 44 | } |