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| author | Chandler Carruth <chandlerc@gmail.com> | 2012-08-07 09:45:24 +0000 |
|---|---|---|
| committer | Chandler Carruth <chandlerc@gmail.com> | 2012-08-07 09:45:24 +0000 |
| commit | 881d0a796668a98acf5140ecf7e7b8743a11ba3a (patch) | |
| tree | ce1fcc85a2ef540f27e9110aca81f6983144fda8 /llvm/test/CodeGen/X86/loop-blocks.ll | |
| parent | abc1e22d659e735af4946bc70762ece5391e4472 (diff) | |
| download | bcm5719-llvm-881d0a796668a98acf5140ecf7e7b8743a11ba3a.tar.gz bcm5719-llvm-881d0a796668a98acf5140ecf7e7b8743a11ba3a.zip | |
Add a much more conservative strategy for aligning branch targets.
Previously, MBP essentially aligned every branch target it could. This
bloats code quite a bit, especially non-looping code which has no real
reason to prefer aligned branch targets so heavily.
As Andy said in review, it's still a bit odd to do this without a real
cost model, but this at least has much more plausible heuristics.
Fixes PR13265.
llvm-svn: 161409
Diffstat (limited to 'llvm/test/CodeGen/X86/loop-blocks.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/loop-blocks.ll | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/llvm/test/CodeGen/X86/loop-blocks.ll b/llvm/test/CodeGen/X86/loop-blocks.ll index d14102fe245..4bd162b4529 100644 --- a/llvm/test/CodeGen/X86/loop-blocks.ll +++ b/llvm/test/CodeGen/X86/loop-blocks.ll @@ -41,7 +41,6 @@ done: ; CHECK-NEXT: align ; CHECK-NEXT: .LBB1_4: ; CHECK-NEXT: callq bar99 -; CHECK-NEXT: align ; CHECK-NEXT: .LBB1_1: ; CHECK-NEXT: callq body @@ -79,7 +78,6 @@ exit: ; CHECK-NEXT: .LBB2_5: ; CHECK-NEXT: callq block_a_true_func ; CHECK-NEXT: callq block_a_merge_func -; CHECK-NEXT: align ; CHECK-NEXT: .LBB2_1: ; CHECK-NEXT: callq body ; @@ -139,13 +137,13 @@ exit: ; CHECK-NEXT: align ; CHECK-NEXT: .LBB3_7: ; CHECK-NEXT: callq bar100 -; CHECK-NEXT: align ; CHECK-NEXT: .LBB3_1: ; CHECK-NEXT: callq loop_header ; CHECK: jl .LBB3_7 ; CHECK: jge .LBB3_3 ; CHECK-NEXT: callq bar101 ; CHECK-NEXT: jmp .LBB3_1 +; CHECK-NEXT: align ; CHECK-NEXT: .LBB3_3: ; CHECK: jge .LBB3_4 ; CHECK-NEXT: callq bar102 |
