1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -loop-unroll -S < %s | FileCheck %s
4 define i32 @test(i32 %a, i32 %b, i32 %c) optsize {
7 ; CHECK-NEXT: [[REF_TMP:%.*]] = alloca [3 x i32], align 4
8 ; CHECK-NEXT: [[TMP0:%.*]] = bitcast [3 x i32]* [[REF_TMP]] to i8*
9 ; CHECK-NEXT: [[ARRAYINIT_BEGIN:%.*]] = getelementptr inbounds [3 x i32], [3 x i32]* [[REF_TMP]], i64 0, i64 0
10 ; CHECK-NEXT: store i32 [[A:%.*]], i32* [[ARRAYINIT_BEGIN]], align 4
11 ; CHECK-NEXT: [[ARRAYINIT_ELEMENT:%.*]] = getelementptr inbounds [3 x i32], [3 x i32]* [[REF_TMP]], i64 0, i64 1
12 ; CHECK-NEXT: store i32 [[B:%.*]], i32* [[ARRAYINIT_ELEMENT]], align 4
13 ; CHECK-NEXT: [[ARRAYINIT_ELEMENT1:%.*]] = getelementptr inbounds [3 x i32], [3 x i32]* [[REF_TMP]], i64 0, i64 2
14 ; CHECK-NEXT: store i32 [[C:%.*]], i32* [[ARRAYINIT_ELEMENT1]], align 4
15 ; CHECK-NEXT: [[ADD_PTR_I_I:%.*]] = getelementptr inbounds [3 x i32], [3 x i32]* [[REF_TMP]], i64 0, i64 3
16 ; CHECK-NEXT: [[CMP_I_I_I3:%.*]] = icmp slt i32 [[A]], [[B]]
17 ; CHECK-NEXT: [[SPEC_SELECT_I_I4:%.*]] = select i1 [[CMP_I_I_I3]], i32* [[ARRAYINIT_ELEMENT]], i32* [[ARRAYINIT_BEGIN]]
18 ; CHECK-NEXT: [[INCDEC_PTR_I_I5:%.*]] = getelementptr inbounds [3 x i32], [3 x i32]* [[REF_TMP]], i64 0, i64 2
19 ; CHECK-NEXT: br label [[LOOP:%.*]]
21 ; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, i32* [[SPEC_SELECT_I_I4]], align 4
22 ; CHECK-NEXT: [[DOTPRE2:%.*]] = load i32, i32* [[INCDEC_PTR_I_I5]], align 4
23 ; CHECK-NEXT: [[CMP_I_I_I:%.*]] = icmp slt i32 [[DOTPRE]], [[DOTPRE2]]
24 ; CHECK-NEXT: [[SPEC_SELECT_I_I:%.*]] = select i1 [[CMP_I_I_I]], i32* [[INCDEC_PTR_I_I5]], i32* [[SPEC_SELECT_I_I4]]
25 ; CHECK-NEXT: [[INCDEC_PTR_I_I:%.*]] = getelementptr inbounds i32, i32* [[INCDEC_PTR_I_I5]], i64 1
26 ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[SPEC_SELECT_I_I]], align 4
27 ; CHECK-NEXT: ret i32 [[TMP1]]
30 %ref.tmp = alloca [3 x i32], align 4
31 %0 = bitcast [3 x i32]* %ref.tmp to i8*
32 %arrayinit.begin = getelementptr inbounds [3 x i32], [3 x i32]* %ref.tmp, i64 0, i64 0
33 store i32 %a, i32* %arrayinit.begin, align 4
34 %arrayinit.element = getelementptr inbounds [3 x i32], [3 x i32]* %ref.tmp, i64 0, i64 1
35 store i32 %b, i32* %arrayinit.element, align 4
36 %arrayinit.element1 = getelementptr inbounds [3 x i32], [3 x i32]* %ref.tmp, i64 0, i64 2
37 store i32 %c, i32* %arrayinit.element1, align 4
38 %add.ptr.i.i = getelementptr inbounds [3 x i32], [3 x i32]* %ref.tmp, i64 0, i64 3
39 %cmp.i.i.i3 = icmp slt i32 %a, %b
40 %spec.select.i.i4 = select i1 %cmp.i.i.i3, i32* %arrayinit.element, i32* %arrayinit.begin
41 %incdec.ptr.i.i5 = getelementptr inbounds [3 x i32], [3 x i32]* %ref.tmp, i64 0, i64 2
44 loop: ; preds = %entry, %loop
45 %incdec.ptr.i.i7 = phi i32* [ %incdec.ptr.i.i5, %entry ], [ %incdec.ptr.i.i, %loop ]
46 %spec.select.i.i6 = phi i32* [ %spec.select.i.i4, %entry ], [ %spec.select.i.i, %loop ]
47 %.pre = load i32, i32* %spec.select.i.i6, align 4
48 %.pre2 = load i32, i32* %incdec.ptr.i.i7, align 4
49 %cmp.i.i.i = icmp slt i32 %.pre, %.pre2
50 %spec.select.i.i = select i1 %cmp.i.i.i, i32* %incdec.ptr.i.i7, i32* %spec.select.i.i6
51 %incdec.ptr.i.i = getelementptr inbounds i32, i32* %incdec.ptr.i.i7, i64 1
52 %cmp1.i.i = icmp eq i32* %incdec.ptr.i.i, %add.ptr.i.i
53 br i1 %cmp1.i.i, label %exit, label %loop
56 %1 = load i32, i32* %spec.select.i.i, align 4