forked from OSchip/llvm-project
91 lines
4.0 KiB
LLVM
91 lines
4.0 KiB
LLVM
; RUN: opt -loop-reduce -S < %s | FileCheck %s
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; PR9939
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; LSR should properly handle the post-inc offset when folding the
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; non-IV operand of an icmp into the IV.
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; CHECK: [[r1:%[a-z0-9]+]] = sub i64 %sub.ptr.lhs.cast, %sub.ptr.rhs.cast
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; CHECK: [[r2:%[a-z0-9]+]] = lshr i64 [[r1]], 1
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; CHECK: [[r3:%[a-z0-9]+]] = shl i64 [[r2]], 1
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; CHECK: br label %for.body
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; CHECK: for.body:
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; CHECK: %lsr.iv2 = phi i64 [ %lsr.iv.next, %for.body ], [ [[r3]], %for.body.lr.ph ]
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; CHECK: %lsr.iv.next = add i64 %lsr.iv2, -2
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; CHECK: %lsr.iv.next3 = inttoptr i64 %lsr.iv.next to i16*
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; CHECK: %cmp27 = icmp eq i16* %lsr.iv.next3, null
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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%struct.Vector2 = type { i16*, [64 x i16], i32 }
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@.str = private unnamed_addr constant [37 x i8] c"0123456789abcdefghijklmnopqrstuvwxyz\00"
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define void @_Z15IntegerToStringjjR7Vector2(i32 %i, i32 %radix, %struct.Vector2* nocapture %result) nounwind noinline {
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entry:
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%buffer = alloca [33 x i16], align 16
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%add.ptr = getelementptr inbounds [33 x i16], [33 x i16]* %buffer, i64 0, i64 33
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br label %do.body
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do.body: ; preds = %do.body, %entry
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%0 = phi i64 [ %indvar.next44, %do.body ], [ 0, %entry ]
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%i.addr.0 = phi i32 [ %div, %do.body ], [ %i, %entry ]
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%tmp51 = sub i64 32, %0
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%incdec.ptr = getelementptr [33 x i16], [33 x i16]* %buffer, i64 0, i64 %tmp51
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%rem = urem i32 %i.addr.0, 10
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%div = udiv i32 %i.addr.0, 10
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%idxprom = zext i32 %rem to i64
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%arrayidx = getelementptr inbounds [37 x i8], [37 x i8]* @.str, i64 0, i64 %idxprom
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%tmp5 = load i8, i8* %arrayidx, align 1
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%conv = sext i8 %tmp5 to i16
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store i16 %conv, i16* %incdec.ptr, align 2
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%1 = icmp ugt i32 %i.addr.0, 9
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%indvar.next44 = add i64 %0, 1
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br i1 %1, label %do.body, label %do.end
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do.end: ; preds = %do.body
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%xap.0 = inttoptr i64 %0 to i1*
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%cap.0 = ptrtoint i1* %xap.0 to i64
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%sub.ptr.lhs.cast = ptrtoint i16* %add.ptr to i64
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%sub.ptr.rhs.cast = ptrtoint i16* %incdec.ptr to i64
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%sub.ptr.sub = sub i64 %sub.ptr.lhs.cast, %sub.ptr.rhs.cast
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%sub.ptr.div39 = lshr exact i64 %sub.ptr.sub, 1
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%conv11 = trunc i64 %sub.ptr.div39 to i32
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%mLength = getelementptr inbounds %struct.Vector2, %struct.Vector2* %result, i64 0, i32 2
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%idx.ext21 = bitcast i64 %sub.ptr.div39 to i64
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%incdec.ptr.sum = add i64 %idx.ext21, -1
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%cp.0.sum = sub i64 %incdec.ptr.sum, %0
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%add.ptr22 = getelementptr [33 x i16], [33 x i16]* %buffer, i64 1, i64 %cp.0.sum
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%cmp2740 = icmp eq i64 %idx.ext21, 0
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br i1 %cmp2740, label %for.end, label %for.body.lr.ph
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for.body.lr.ph: ; preds = %do.end
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%tmp16 = load i32, i32* %mLength, align 4
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%mBegin = getelementptr inbounds %struct.Vector2, %struct.Vector2* %result, i64 0, i32 0
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%tmp14 = load i16*, i16** %mBegin, align 8
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%tmp48 = zext i32 %tmp16 to i64
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br label %for.body
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for.body: ; preds = %for.body, %for.body.lr.ph
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%indvar = phi i64 [ 0, %for.body.lr.ph ], [ %indvar.next, %for.body ]
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%tmp46 = add i64 %tmp51, %indvar
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%p.042 = getelementptr [33 x i16], [33 x i16]* %buffer, i64 0, i64 %tmp46
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%tmp47 = sub i64 %indvar, %0
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%incdec.ptr32 = getelementptr [33 x i16], [33 x i16]* %buffer, i64 1, i64 %tmp47
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%tmp49 = add i64 %tmp48, %indvar
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%dst.041 = getelementptr i16, i16* %tmp14, i64 %tmp49
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%tmp29 = load i16, i16* %p.042, align 2
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store i16 %tmp29, i16* %dst.041, align 2
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%cmp27 = icmp eq i16* %incdec.ptr32, %add.ptr22
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%indvar.next = add i64 %indvar, 1
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br i1 %cmp27, label %for.end.loopexit, label %for.body
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for.end.loopexit: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %do.end
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%tmp38 = load i32, i32* %mLength, align 4
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%add = add i32 %tmp38, %conv11
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store i32 %add, i32* %mLength, align 4
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ret void
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}
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