llvm-6502/test/Transforms/IndVarsSimplify/2008-06-15-SCEVExpanderBug.ll
Wojciech Matyjewicz 8a08769bad Fix PR2434. When scanning for exising binary operator to reuse don't
take into account the instrucion pointed by InsertPt. Thanks to it, 
returning the new value of InsertPt to the InsertBinop() caller can be 
avoided. The bug was, actually, in visitAddRecExpr() method which wasn't 
correctly handling changes of InsertPt. There shouldn't be any 
performance regression, as -gvn pass (run after -indvars) removes any 
redundant binops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52291 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-15 19:07:39 +00:00

18 lines
620 B
LLVM

; RUN: llvm-as < %s | opt -indvars -disable-output
; PR2434
define fastcc void @regcppop() nounwind {
entry:
%tmp61 = add i32 0, -5 ; <i32> [#uses=1]
br label %bb
bb: ; preds = %bb, %entry
%PL_savestack_ix.tmp.0 = phi i32 [ %tmp61, %entry ], [ %tmp127, %bb ] ; <i32> [#uses=2]
%indvar10 = phi i32 [ 0, %entry ], [ %indvar.next11, %bb ] ; <i32> [#uses=2]
%tmp13 = mul i32 %indvar10, -4 ; <i32> [#uses=0]
%tmp111 = add i32 %PL_savestack_ix.tmp.0, -3 ; <i32> [#uses=0]
%tmp127 = add i32 %PL_savestack_ix.tmp.0, -4 ; <i32> [#uses=1]
%indvar.next11 = add i32 %indvar10, 1 ; <i32> [#uses=1]
br label %bb
}