6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-13 04:30:23 +00:00
Code Issues Projects Releases Wiki Activity

Add a basic testcase for TBAA-aware LICM.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116745 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-10-18 21:00:09 +00:00
parent eada304793
commit 992ac3e6c6
1 changed files with 33 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
test/Analysis/TypeBasedAliasAnalysis/licm.ll Normal file
View File

@ -0,0 +1,33 @@
; RUN: opt -tbaa -licm -enable-tbaa -S < %s | FileCheck %s
; LICM should be able to hoist the address load out of the loop
; by using TBAA information.
; CHECK: entry:
; CHECK-NEXT: %tmp3 = load double** @P, !tbaa !0
; CHECK-NEXT: br label %for.body
@P = common global double* null
define void @foo(i64 %n) nounwind {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%i.07 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
%tmp3 = load double** @P, !tbaa !1
%scevgep = getelementptr double* %tmp3, i64 %i.07
%tmp4 = load double* %scevgep, !tbaa !2
%mul = fmul double %tmp4, 2.300000e+00
store double %mul, double* %scevgep, !tbaa !2
%inc = add i64 %i.07, 1
%exitcond = icmp eq i64 %inc, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
!0 = metadata !{metadata !"root", null}
!1 = metadata !{metadata !"pointer", metadata !0}
!2 = metadata !{metadata !"double", metadata !0}