| commit | 67255a1d1783c126c1cbd4982670a61bc63aacce | [log] [tgz] |
|---|---|---|
| author | Chris Lattner <sabre@nondot.org> | Thu Apr 07 18:14:58 2005 +0000 |
| committer | Chris Lattner <sabre@nondot.org> | Thu Apr 07 18:14:58 2005 +0000 |
| tree | 6baad1ade245700d92a05d2a4ba673996992fbad | |
| parent | 0b5031abd44cdce6ce82bbe4828fa4f1e50064da [diff] |
This patch does two things. First, it canonicalizes 'X >= C' -> 'X > C-1'
(likewise for <= >=u >=u).
Second, it implements a special case hack to turn 'X gtu SINTMAX' -> 'X lt 0'
On powerpc, for example, this changes this:
lis r2, 32767
ori r2, r2, 65535
cmplw cr0, r3, r2
bgt .LBB_test_2
into:
cmpwi cr0, r3, 0
blt .LBB_test_2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21142 91177308-0d34-0410-b5e6-96231b3b80d8