forked from OSchip/llvm-project
62 lines
2.5 KiB
LLVM
62 lines
2.5 KiB
LLVM
; Loop is elimianted
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; RUN: llvm-as < %s | opt -loop-index-split -disable-output -stats |& \
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; RUN: grep "loop-index-split" | count 1
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%struct.anon = type { i32 }
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@S1 = external global i32 ; <i32*> [#uses=1]
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@W1 = external global i32 ; <i32*> [#uses=1]
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@Y = weak global [100 x %struct.anon] zeroinitializer, align 32 ; <[100 x %struct.anon]*> [#uses=1]
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@ti = external global i32 ; <i32*> [#uses=1]
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@T2 = external global [100 x [100 x i32]] ; <[100 x [100 x i32]]*> [#uses=1]
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@d = external global i32 ; <i32*> [#uses=1]
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@T1 = external global i32 ; <i32*> [#uses=2]
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@N2 = external global i32 ; <i32*> [#uses=2]
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define void @foo() {
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entry:
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%tmp = load i32* @S1, align 4 ; <i32> [#uses=2]
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%tmp266 = load i32* @N2, align 4 ; <i32> [#uses=1]
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%tmp288 = icmp ult i32 %tmp, %tmp266 ; <i1> [#uses=1]
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br i1 %tmp288, label %bb.preheader, label %return
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bb.preheader: ; preds = %entry
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%tmp1 = load i32* @W1, align 4 ; <i32> [#uses=1]
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%tmp13 = load i32* @ti, align 4 ; <i32> [#uses=1]
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%tmp18 = load i32* @d, align 4 ; <i32> [#uses=1]
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%tmp26 = load i32* @N2, align 4 ; <i32> [#uses=1]
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%T1.promoted = load i32* @T1 ; <i32> [#uses=1]
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br label %bb
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bb: ; preds = %bb.preheader, %bb25
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%T1.tmp.1 = phi i32 [ %T1.promoted, %bb.preheader ], [ %T1.tmp.0, %bb25 ] ; <i32> [#uses=3]
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%tj.01.0 = phi i32 [ %tmp24, %bb25 ], [ %tmp, %bb.preheader ] ; <i32> [#uses=4]
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%tmp3 = icmp eq i32 %tj.01.0, %tmp1 ; <i1> [#uses=1]
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br i1 %tmp3, label %cond_true, label %bb25
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cond_true: ; preds = %bb
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%tmp7 = getelementptr [100 x %struct.anon]* @Y, i32 0, i32 %tj.01.0, i32 0 ; <i32*> [#uses=1]
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%tmp8 = load i32* %tmp7, align 4 ; <i32> [#uses=1]
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%tmp9 = icmp sgt i32 %tmp8, 0 ; <i1> [#uses=1]
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br i1 %tmp9, label %cond_true12, label %bb25
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cond_true12: ; preds = %cond_true
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%tmp16 = getelementptr [100 x [100 x i32]]* @T2, i32 0, i32 %tmp13, i32 %tj.01.0 ; <i32*> [#uses=1]
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%tmp17 = load i32* %tmp16, align 4 ; <i32> [#uses=1]
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%tmp19 = mul i32 %tmp18, %tmp17 ; <i32> [#uses=1]
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%tmp21 = add i32 %tmp19, %T1.tmp.1 ; <i32> [#uses=1]
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br label %bb25
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bb25: ; preds = %cond_true, %bb, %cond_true12
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%T1.tmp.0 = phi i32 [ %T1.tmp.1, %bb ], [ %T1.tmp.1, %cond_true ], [ %tmp21, %cond_true12 ] ; <i32> [#uses=2]
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%tmp24 = add i32 %tj.01.0, 1 ; <i32> [#uses=2]
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%tmp28 = icmp ult i32 %tmp24, %tmp26 ; <i1> [#uses=1]
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br i1 %tmp28, label %bb, label %return.loopexit
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return.loopexit: ; preds = %bb25
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%T1.tmp.0.lcssa = phi i32 [ %T1.tmp.0, %bb25 ] ; <i32> [#uses=1]
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store i32 %T1.tmp.0.lcssa, i32* @T1
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br label %return
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return: ; preds = %return.loopexit, %entry
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ret void
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}
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