| ; RUN: opt -S -loop-reroll %s | FileCheck %s |
| target triple = "aarch64--linux-gnu" |
| |
| define void @test(i32 %n, float* %arrayidx200, float* %arrayidx164, float* %arrayidx172) { |
| entry: |
| %rem.i = srem i32 %n, 4 |
| %t22 = load float, float* %arrayidx172, align 4 |
| %cmp.9 = icmp eq i32 %n, 0 |
| %t7 = sext i32 %n to i64 |
| br i1 %cmp.9, label %while.end, label %while.body.preheader |
| |
| while.body.preheader: |
| br label %while.body |
| |
| while.body: |
| ;CHECK-LABEL: while.body: |
| ;CHECK-NEXT: %indvar = phi i64 [ %indvar.next, %while.body ], [ 0, %while.body.preheader ] |
| ;CHECK-NEXT: %arrayidx62.i = getelementptr inbounds float, float* %arrayidx200, i64 %indvar |
| ;CHECK-NEXT: %t1 = load float, float* %arrayidx62.i, align 4 |
| ;CHECK-NEXT: %arrayidx64.i = getelementptr inbounds float, float* %arrayidx164, i64 %indvar |
| ;CHECK-NEXT: %t2 = load float, float* %arrayidx64.i, align 4 |
| ;CHECK-NEXT: %mul65.i = fmul fast float %t2, %t22 |
| ;CHECK-NEXT: %add66.i = fadd fast float %mul65.i, %t1 |
| ;CHECK-NEXT: store float %add66.i, float* %arrayidx62.i, align 4 |
| ;CHECK-NEXT: %indvar.next = add i64 %indvar, 1 |
| ;CHECK-NEXT: %exitcond = icmp eq i64 %indvar, %{{[0-9]+}} |
| ;CHECK-NEXT: br i1 %exitcond, label %while.end.loopexit, label %while.body |
| |
| %indvars.iv.i423 = phi i64 [ %indvars.iv.next.i424, %while.body ], [ 0, %while.body.preheader ] |
| %i.22.i = phi i32 [ %add103.i, %while.body ], [ %rem.i, %while.body.preheader ] |
| %arrayidx62.i = getelementptr inbounds float, float* %arrayidx200, i64 %indvars.iv.i423 |
| %t1 = load float, float* %arrayidx62.i, align 4 |
| %arrayidx64.i = getelementptr inbounds float, float* %arrayidx164, i64 %indvars.iv.i423 |
| %t2 = load float, float* %arrayidx64.i, align 4 |
| %mul65.i = fmul fast float %t2, %t22 |
| %add66.i = fadd fast float %mul65.i, %t1 |
| store float %add66.i, float* %arrayidx62.i, align 4 |
| %t3 = add nsw i64 %indvars.iv.i423, 1 |
| %arrayidx71.i = getelementptr inbounds float, float* %arrayidx200, i64 %t3 |
| %t4 = load float, float* %arrayidx71.i, align 4 |
| %arrayidx74.i = getelementptr inbounds float, float* %arrayidx164, i64 %t3 |
| %t5 = load float, float* %arrayidx74.i, align 4 |
| %mul75.i = fmul fast float %t5, %t22 |
| %add76.i = fadd fast float %mul75.i, %t4 |
| store float %add76.i, float* %arrayidx71.i, align 4 |
| %add103.i = add nsw i32 %i.22.i, 2 |
| %t6 = sext i32 %add103.i to i64 |
| %cmp58.i = icmp slt i64 %t6, %t7 |
| %indvars.iv.next.i424 = add i64 %indvars.iv.i423, 2 |
| br i1 %cmp58.i, label %while.body, label %while.end.loopexit |
| |
| while.end.loopexit: |
| br label %while.end |
| |
| while.end: |
| ret void |
| } |
| |
| ; Function Attrs: noinline norecurse nounwind |
| define i32 @test2(i64 %n, i32* nocapture %x, i32* nocapture readonly %y) { |
| entry: |
| %cmp18 = icmp sgt i64 %n, 0 |
| br i1 %cmp18, label %for.body.preheader, label %for.end |
| |
| for.body.preheader: ; preds = %entry |
| br label %for.body |
| |
| for.body: ; preds = %for.body.preheader, %for.body |
| |
| ;CHECK-LABEL: for.body: |
| ;CHECK-NEXT: %indvar = phi i64 [ %indvar.next, %for.body ], [ 0, %for.body.preheader ] |
| ;CHECK-NEXT: %arrayidx = getelementptr inbounds i32, i32* %y, i64 %indvar |
| ;CHECK-NEXT: [[T1:%[0-9]+]] = load i32, i32* %arrayidx, align 4 |
| ;CHECK-NEXT: %arrayidx3 = getelementptr inbounds i32, i32* %x, i64 %indvar |
| ;CHECK-NEXT: store i32 [[T1]], i32* %arrayidx3, align 4 |
| ;CHECK-NEXT: %indvar.next = add i64 %indvar, 1 |
| ;CHECK-NEXT: %exitcond = icmp eq i64 %indvar, %{{[0-9]+}} |
| ;CHECK-NEXT: br i1 %exitcond, label %for.end.loopexit, label %for.body |
| |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ] |
| %arrayidx = getelementptr inbounds i32, i32* %y, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %x, i64 %indvars.iv |
| store i32 %0, i32* %arrayidx3, align 4 |
| %1 = or i64 %indvars.iv, 1 |
| %arrayidx5 = getelementptr inbounds i32, i32* %y, i64 %1 |
| %2 = load i32, i32* %arrayidx5, align 4 |
| %arrayidx8 = getelementptr inbounds i32, i32* %x, i64 %1 |
| store i32 %2, i32* %arrayidx8, align 4 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 2 |
| %cmp = icmp slt i64 %indvars.iv.next, %n |
| br i1 %cmp, label %for.body, label %for.end.loopexit |
| |
| for.end.loopexit: ; preds = %for.body |
| br label %for.end |
| |
| for.end: ; preds = %for.end.loopexit, %entry |
| ret i32 0 |
| } |
| |
| ; Function Attrs: noinline norecurse nounwind |
| define i32 @test3(i32 %n, i32* nocapture %x, i32* nocapture readonly %y) { |
| entry: |
| %cmp21 = icmp sgt i32 %n, 0 |
| br i1 %cmp21, label %for.body.preheader, label %for.end |
| |
| for.body.preheader: ; preds = %entry |
| br label %for.body |
| |
| for.body: ; preds = %for.body.preheader, %for.body |
| |
| ;CHECK-LABEL: for.body: |
| ;CHECK: %add12 = add i8 %i.022, 2 |
| ;CHECK-NEXT: %conv = sext i8 %add12 to i32 |
| ;CHECK-NEXT: %cmp = icmp slt i32 %conv, %n |
| ;CHECK-NEXT: br i1 %cmp, label %for.body, label %for.end.loopexit |
| |
| %conv23 = phi i32 [ %conv, %for.body ], [ 0, %for.body.preheader ] |
| %i.022 = phi i8 [ %add12, %for.body ], [ 0, %for.body.preheader ] |
| %idxprom = sext i8 %i.022 to i64 |
| %arrayidx = getelementptr inbounds i32, i32* %y, i64 %idxprom |
| %0 = load i32, i32* %arrayidx, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %x, i64 %idxprom |
| store i32 %0, i32* %arrayidx3, align 4 |
| %add = or i32 %conv23, 1 |
| %idxprom5 = sext i32 %add to i64 |
| %arrayidx6 = getelementptr inbounds i32, i32* %y, i64 %idxprom5 |
| %1 = load i32, i32* %arrayidx6, align 4 |
| %arrayidx10 = getelementptr inbounds i32, i32* %x, i64 %idxprom5 |
| store i32 %1, i32* %arrayidx10, align 4 |
| %add12 = add i8 %i.022, 2 |
| %conv = sext i8 %add12 to i32 |
| %cmp = icmp slt i32 %conv, %n |
| br i1 %cmp, label %for.body, label %for.end.loopexit |
| |
| for.end.loopexit: ; preds = %for.body |
| br label %for.end |
| |
| for.end: ; preds = %for.end.loopexit, %entry |
| ret i32 0 |
| } |
| |
| ; Function Attrs: noinline norecurse nounwind |
| define i32 @test4(i64 %n, i32* nocapture %x, i32* nocapture readonly %y) { |
| entry: |
| %cmp18 = icmp eq i64 %n, 0 |
| br i1 %cmp18, label %for.end, label %for.body.preheader |
| |
| for.body.preheader: ; preds = %entry |
| br label %for.body |
| |
| for.body: ; preds = %for.body.preheader, %for.body |
| |
| ;CHECK-LABEL: for.body: |
| ;CHECK-NEXT: %indvar = phi i64 [ %indvar.next, %for.body ], [ 0, %for.body.preheader ] |
| ;CHECK-NEXT: %arrayidx = getelementptr inbounds i32, i32* %y, i64 %indvar |
| ;CHECK-NEXT: [[T1:%[0-9]+]] = load i32, i32* %arrayidx, align 4 |
| ;CHECK-NEXT: %arrayidx3 = getelementptr inbounds i32, i32* %x, i64 %indvar |
| ;CHECK-NEXT: store i32 [[T1]], i32* %arrayidx3, align 4 |
| ;CHECK-NEXT: %indvar.next = add i64 %indvar, 1 |
| ;CHECK-NEXT: %exitcond = icmp eq i64 %indvar, %{{[0-9]+}} |
| ;CHECK-NEXT: br i1 %exitcond, label %for.end.loopexit, label %for.body |
| |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ] |
| %arrayidx = getelementptr inbounds i32, i32* %y, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %x, i64 %indvars.iv |
| store i32 %0, i32* %arrayidx3, align 4 |
| %1 = or i64 %indvars.iv, 1 |
| %arrayidx5 = getelementptr inbounds i32, i32* %y, i64 %1 |
| %2 = load i32, i32* %arrayidx5, align 4 |
| %arrayidx8 = getelementptr inbounds i32, i32* %x, i64 %1 |
| store i32 %2, i32* %arrayidx8, align 4 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 2 |
| %cmp = icmp ult i64 %indvars.iv.next, %n |
| br i1 %cmp, label %for.body, label %for.end.loopexit |
| |
| for.end.loopexit: ; preds = %for.body |
| br label %for.end |
| |
| for.end: ; preds = %for.end.loopexit, %entry |
| ret i32 0 |
| } |
| |