llvm-6502/test/Transforms/LoopIndexSplit/2008-05-19-IndVar.ll
Devang Patel 00622952ce Do not ignore iv uses outside the loop.
This one slipped through cracks very well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56284 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-17 17:53:47 +00:00

41 lines
1.6 KiB
LLVM

; RUN: llvm-as < %s | opt -loop-index-split -stats -disable-output | not grep "loop-index-split"
;PR2294
@g_2 = external global i16 ; <i16*> [#uses=4]
@g_5 = external global i32 ; <i32*> [#uses=1]
@.str = external constant [4 x i8] ; <[4 x i8]*> [#uses=1]
declare void @func_1() nounwind
define i32 @main() nounwind {
entry:
%tmp101.i = load i16* @g_2, align 2 ; <i16> [#uses=1]
%tmp112.i = icmp sgt i16 %tmp101.i, 0 ; <i1> [#uses=1]
br i1 %tmp112.i, label %bb.preheader.i, label %func_1.exit
bb.preheader.i: ; preds = %entry
%g_2.promoted.i = load i16* @g_2 ; <i16> [#uses=1]
br label %bb.i
bb.i: ; preds = %bb6.i, %bb.preheader.i
%g_2.tmp.0.i = phi i16 [ %g_2.promoted.i, %bb.preheader.i ], [ %tmp8.i, %bb6.i ] ; <i16> [#uses=2]
%tmp2.i = icmp eq i16 %g_2.tmp.0.i, 0 ; <i1> [#uses=1]
br i1 %tmp2.i, label %bb4.i, label %bb6.i
bb4.i: ; preds = %bb.i
%tmp5.i = volatile load i32* @g_5, align 4 ; <i32> [#uses=0]
br label %bb6.i
bb6.i: ; preds = %bb4.i, %bb.i
%tmp8.i = add i16 %g_2.tmp.0.i, 1 ; <i16> [#uses=3]
%tmp11.i = icmp sgt i16 %tmp8.i, 42 ; <i1> [#uses=1]
br i1 %tmp11.i, label %bb.i, label %return.loopexit.i
return.loopexit.i: ; preds = %bb6.i
%tmp8.i.lcssa = phi i16 [ %tmp8.i, %bb6.i ] ; <i16> [#uses=1]
store i16 %tmp8.i.lcssa, i16* @g_2
br label %func_1.exit
func_1.exit: ; preds = %return.loopexit.i, %entry
%tmp1 = load i16* @g_2, align 2 ; <i16> [#uses=1]
%tmp12 = sext i16 %tmp1 to i32 ; <i32> [#uses=1]
%tmp3 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i32 %tmp12 ) nounwind ; <i32> [#uses=0]
ret i32 0
}
declare i32 @printf(i8*, ...) nounwind