1 ; RUN: opt -loop-reduce -S < %s | FileCheck %s 2 ; PR9939 3 4 ; LSR should properly handle the post-inc offset when folding the 5 ; non-IV operand of an icmp into the IV. 6 7 ; CHECK: [[r1:%[a-z0-9]+]] = sub i64 %sub.ptr.lhs.cast, %sub.ptr.rhs.cast 8 ; CHECK: [[r2:%[a-z0-9]+]] = lshr i64 [[r1]], 1 9 ; CHECK: [[r3:%[a-z0-9]+]] = mul i64 [[r2]], 2 10 ; CHECK: br label %for.body 11 ; CHECK: for.body: 12 ; CHECK: %lsr.iv2 = phi i64 [ %lsr.iv.next, %for.body ], [ [[r3]], %for.body.lr.ph ] 13 ; CHECK: %lsr.iv.next = add i64 %lsr.iv2, -2 14 ; CHECK: %lsr.iv.next3 = inttoptr i64 %lsr.iv.next to i16* 15 ; CHECK: %cmp27 = icmp eq i16* %lsr.iv.next3, null 16 17 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" 18 19 %struct.Vector2 = type { i16*, [64 x i16], i32 } 20 21 @.str = private unnamed_addr constant [37 x i8] c"0123456789abcdefghijklmnopqrstuvwxyz\00" 22 23 define void @_Z15IntegerToStringjjR7Vector2(i32 %i, i32 %radix, %struct.Vector2* nocapture %result) nounwind noinline { 24 entry: 25 %buffer = alloca [33 x i16], align 16 26 %add.ptr = getelementptr inbounds [33 x i16]* %buffer, i64 0, i64 33 27 br label %do.body 28 29 do.body: ; preds = %do.body, %entry 30 %0 = phi i64 [ %indvar.next44, %do.body ], [ 0, %entry ] 31 %i.addr.0 = phi i32 [ %div, %do.body ], [ %i, %entry ] 32 %tmp51 = sub i64 32, %0 33 %incdec.ptr = getelementptr [33 x i16]* %buffer, i64 0, i64 %tmp51 34 %rem = urem i32 %i.addr.0, 10 35 %div = udiv i32 %i.addr.0, 10 36 %idxprom = zext i32 %rem to i64 37 %arrayidx = getelementptr inbounds [37 x i8]* @.str, i64 0, i64 %idxprom 38 %tmp5 = load i8* %arrayidx, align 1 39 %conv = sext i8 %tmp5 to i16 40 store i16 %conv, i16* %incdec.ptr, align 2 41 %1 = icmp ugt i32 %i.addr.0, 9 42 %indvar.next44 = add i64 %0, 1 43 br i1 %1, label %do.body, label %do.end 44 45 do.end: ; preds = %do.body 46 %xap.0 = inttoptr i64 %0 to i1* 47 %cap.0 = ptrtoint i1* %xap.0 to i64 48 %sub.ptr.lhs.cast = ptrtoint i16* %add.ptr to i64 49 %sub.ptr.rhs.cast = ptrtoint i16* %incdec.ptr to i64 50 %sub.ptr.sub = sub i64 %sub.ptr.lhs.cast, %sub.ptr.rhs.cast 51 %sub.ptr.div39 = lshr exact i64 %sub.ptr.sub, 1 52 %conv11 = trunc i64 %sub.ptr.div39 to i32 53 %mLength = getelementptr inbounds %struct.Vector2* %result, i64 0, i32 2 54 %idx.ext21 = bitcast i64 %sub.ptr.div39 to i64 55 %incdec.ptr.sum = add i64 %idx.ext21, -1 56 %cp.0.sum = sub i64 %incdec.ptr.sum, %0 57 %add.ptr22 = getelementptr [33 x i16]* %buffer, i64 1, i64 %cp.0.sum 58 %cmp2740 = icmp eq i64 %idx.ext21, 0 59 br i1 %cmp2740, label %for.end, label %for.body.lr.ph 60 61 for.body.lr.ph: ; preds = %do.end 62 %tmp16 = load i32* %mLength, align 4 63 %mBegin = getelementptr inbounds %struct.Vector2* %result, i64 0, i32 0 64 %tmp14 = load i16** %mBegin, align 8 65 %tmp48 = zext i32 %tmp16 to i64 66 br label %for.body 67 68 for.body: ; preds = %for.body, %for.body.lr.ph 69 %indvar = phi i64 [ 0, %for.body.lr.ph ], [ %indvar.next, %for.body ] 70 %tmp46 = add i64 %tmp51, %indvar 71 %p.042 = getelementptr [33 x i16]* %buffer, i64 0, i64 %tmp46 72 %tmp47 = sub i64 %indvar, %0 73 %incdec.ptr32 = getelementptr [33 x i16]* %buffer, i64 1, i64 %tmp47 74 %tmp49 = add i64 %tmp48, %indvar 75 %dst.041 = getelementptr i16* %tmp14, i64 %tmp49 76 %tmp29 = load i16* %p.042, align 2 77 store i16 %tmp29, i16* %dst.041, align 2 78 %cmp27 = icmp eq i16* %incdec.ptr32, %add.ptr22 79 %indvar.next = add i64 %indvar, 1 80 br i1 %cmp27, label %for.end.loopexit, label %for.body 81 82 for.end.loopexit: ; preds = %for.body 83 br label %for.end 84 85 for.end: ; preds = %for.end.loopexit, %do.end 86 %tmp38 = load i32* %mLength, align 4 87 %add = add i32 %tmp38, %conv11 88 store i32 %add, i32* %mLength, align 4 89 ret void 90 } 91
