6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-10-25 10:27:04 +00:00
Code Issues Projects Releases Wiki Activity

Make CodePlacementOpt align loops, rather than loop headers. The

Browse Source 
header is just the entry block to the loop, and it needn't be at
the top of the loop in the code layout.

Remove the code that suppressed loop alignment for outer loops,
so that outer loops are aligned.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84158 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-10-15 00:36:22 +00:00
parent a2f8047134
commit cd2ae14ce3
3 changed files with 44 additions and 74 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
test/CodeGen/X86/avoid-loop-align-2.ll
View File

@@ -1,4 +1,8 @@
; RUN: llc < %s -march=x86 | grep align | count 3
; RUN: llc < %s -march=x86 | grep align | count 4
; TODO: Is it a good idea to align inner loops? It's hard to know without
; knowing what their trip counts are, or other dynamic information. For
; now, CodeGen aligns all loops.
@x = external global i32* ; <i32**> [#uses=1]