From: Lawrence Hu Date: Tue, 10 May 2016 21:04:28 +0000 (+0000) Subject: Revert r269093: Enable loopreroll for sext of loop control only IV X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=8e8c9a8a0bc603c7dcf4d4c786292cdf275fc697;p=llvm Revert r269093: Enable loopreroll for sext of loop control only IV git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269117 91177308-0d34-0410-b5e6-96231b3b80d8 --- diff --git a/test/Transforms/LoopReroll/indvar_with_ext.ll b/test/Transforms/LoopReroll/indvar_with_ext.ll new file mode 100644 index 00000000000..7aae61433ae --- /dev/null +++ b/test/Transforms/LoopReroll/indvar_with_ext.ll @@ -0,0 +1,186 @@ +; 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: %indvars.iv.i423 = phi i64 [ %indvars.iv.next.i424, %while.body ], [ 0, %while.body.preheader ] +;CHECK-NEXT: [[T1:%[0-9]+]] = trunc i64 %indvars.iv.i423 to i32 +;CHECK-NEXT: %arrayidx62.i = getelementptr inbounds float, float* %arrayidx200, i64 %indvars.iv.i423 +;CHECK-NEXT: %t1 = load float, float* %arrayidx62.i, align 4 +;CHECK-NEXT: %arrayidx64.i = getelementptr inbounds float, float* %arrayidx164, i64 %indvars.iv.i423 +;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: %indvars.iv.next.i424 = add i64 %indvars.iv.i423, 1 +;CHECK-NEXT: [[T2:%[0-9]+]] = sext i32 [[T1]] to i64 +;CHECK-NEXT: %exitcond = icmp eq i64 [[T2]], %{{[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: 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: 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: 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 +} +