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Enable loopreroll for sext of loop control only IV

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This patch extend loopreroll to allow the instruction chain
    of loop control only IV has sext.

    Differential Revision: http://reviews.llvm.org/D19820



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269093 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lawrence Hu 2016-05-10 18:00:42 +00:00
parent efde4d38ac
commit 2a60909c19
1 changed files with 0 additions and 186 deletions
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186
test/Transforms/LoopReroll/indvar_with_ext.ll
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@ -1,186 +0,0 @@
; 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
}