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| author | Dan Gohman <gohman@apple.com> | 2009-11-11 19:48:59 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-11-11 19:48:59 +0000 |
| commit | 64b5d0f46849f74fac5f853bb335de29cf2e1b83 (patch) | |
| tree | e6ff4563185f2980b265bc6de9066f1776c634c4 /llvm/test/CodeGen/X86/loop-blocks.ll | |
| parent | 062c2919494fabd10e68964b571903c8d8577a2c (diff) | |
| download | bcm5719-llvm-64b5d0f46849f74fac5f853bb335de29cf2e1b83.tar.gz bcm5719-llvm-64b5d0f46849f74fac5f853bb335de29cf2e1b83.zip | |
Add support for tail duplication to BranchFolding, and extend
tail merging support to handle more cases.
- Recognize several cases where tail merging is beneficial even when
the tail size is smaller than the generic threshold.
- Make use of MachineInstrDesc::isBarrier to help detect
non-fallthrough blocks.
- Check for and avoid disrupting fall-through edges in more cases.
llvm-svn: 86871
Diffstat (limited to 'llvm/test/CodeGen/X86/loop-blocks.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/loop-blocks.ll | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/llvm/test/CodeGen/X86/loop-blocks.ll b/llvm/test/CodeGen/X86/loop-blocks.ll index c0379d11522..ec5236b3ae6 100644 --- a/llvm/test/CodeGen/X86/loop-blocks.ll +++ b/llvm/test/CodeGen/X86/loop-blocks.ll @@ -74,16 +74,16 @@ exit: ; CHECK: yet_more_involved: ; CHECK: jmp .LBB3_1 ; CHECK-NEXT: align -; CHECK-NEXT: .LBB3_3: +; CHECK-NEXT: .LBB3_4: ; CHECK-NEXT: call bar99 ; CHECK-NEXT: call get ; CHECK-NEXT: cmpl $2999, %eax -; CHECK-NEXT: jg .LBB3_5 +; CHECK-NEXT: jg .LBB3_6 ; CHECK-NEXT: call block_a_true_func -; CHECK-NEXT: jmp .LBB3_6 -; CHECK-NEXT: .LBB3_5: -; CHECK-NEXT: call block_a_false_func +; CHECK-NEXT: jmp .LBB3_7 ; CHECK-NEXT: .LBB3_6: +; CHECK-NEXT: call block_a_false_func +; CHECK-NEXT: .LBB3_7: ; CHECK-NEXT: call block_a_merge_func ; CHECK-NEXT: .LBB3_1: ; CHECK-NEXT: call body |
