llvm-6502/test/Transforms/PredicateSimplifier/predsimplify.reg1.ll
Nick Lewycky 05450ae128 Add PredicateSimplifier pass. Collapses equal variables into one form
and simplifies expressions. This implements the optimization described
in PR807.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29947 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-28 22:44:55 +00:00

24 lines
828 B
LLVM

; RUN: llvm-as < %s | opt -predsimplify -verify
void %dgefa() {
entry:
br label %cond_true96
cond_true: ; preds = %cond_true96
%tmp19 = seteq int %tmp10, %k.0 ; <bool> [#uses=1]
br bool %tmp19, label %cond_next, label %cond_true20
cond_true20: ; preds = %cond_true
br label %cond_next
cond_next: ; preds = %cond_true20, %cond_true
%tmp84 = setgt int %tmp3, 1999 ; <bool> [#uses=0]
ret void
cond_true96: ; preds = %cond_true96, %entry
%k.0 = phi int [ 0, %entry ], [ 0, %cond_true96 ] ; <int> [#uses=3]
%tmp3 = add int %k.0, 1 ; <int> [#uses=1]
%tmp10 = add int 0, %k.0 ; <int> [#uses=1]
br bool false, label %cond_true96, label %cond_true
}