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| 1 | +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 |
| 2 | +; RUN: opt -p indvars -S -o - %s | FileCheck %s |
| 3 | + |
| 4 | +target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" |
| 5 | + |
| 6 | +; Based on TSVC s172. |
| 7 | +define void @test_s172(i32 noundef %xa, i32 noundef %xb, ptr nocapture noundef %a, ptr nocapture noundef readonly %b) { |
| 8 | +; CHECK-LABEL: define void @test_s172( |
| 9 | +; CHECK-SAME: i32 noundef [[XA:%.*]], i32 noundef [[XB:%.*]], ptr nocapture noundef [[A:%.*]], ptr nocapture noundef readonly [[B:%.*]]) { |
| 10 | +; CHECK-NEXT: entry: |
| 11 | +; CHECK-NEXT: [[SUB:%.*]] = add i32 [[XA]], -1 |
| 12 | +; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[XA]], 32001 |
| 13 | +; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| 14 | +; CHECK: for.body.preheader: |
| 15 | +; CHECK-NEXT: [[TMP0:%.*]] = sext i32 [[SUB]] to i64 |
| 16 | +; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[XB]] to i64 |
| 17 | +; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| 18 | +; CHECK: for.body: |
| 19 | +; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[TMP0]], [[FOR_BODY_PREHEADER]] ] |
| 20 | +; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[INDVARS_IV]] |
| 21 | +; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[ARRAYIDX]], align 4 |
| 22 | +; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[INDVARS_IV]] |
| 23 | +; CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4 |
| 24 | +; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP3]], [[TMP2]] |
| 25 | +; CHECK-NEXT: store i32 [[ADD]], ptr [[ARRAYIDX2]], align 4 |
| 26 | +; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], [[TMP1]] |
| 27 | +; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[INDVARS_IV_NEXT]], 32000 |
| 28 | +; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]], !llvm.loop [[LOOP0:![0-9]+]] |
| 29 | +; CHECK: for.end.loopexit: |
| 30 | +; CHECK-NEXT: br label [[FOR_END]] |
| 31 | +; CHECK: for.end: |
| 32 | +; CHECK-NEXT: ret void |
| 33 | +; |
| 34 | +entry: |
| 35 | + %sub = add nsw i32 %xa, -1 |
| 36 | + %cmp1 = icmp slt i32 %xa, 32001 |
| 37 | + br i1 %cmp1, label %for.body.preheader, label %for.end |
| 38 | + |
| 39 | +for.body.preheader: |
| 40 | + br label %for.body |
| 41 | + |
| 42 | +for.body: |
| 43 | + %i.02 = phi i32 [ %add3, %for.body ], [ %sub, %for.body.preheader ] |
| 44 | + %idxprom = sext i32 %i.02 to i64 |
| 45 | + %arrayidx = getelementptr inbounds i32, ptr %b, i64 %idxprom |
| 46 | + %0 = load i32, ptr %arrayidx, align 4 |
| 47 | + %arrayidx2 = getelementptr inbounds i32, ptr %a, i64 %idxprom |
| 48 | + %1 = load i32, ptr %arrayidx2, align 4 |
| 49 | + %add = add nsw i32 %1, %0 |
| 50 | + store i32 %add, ptr %arrayidx2, align 4 |
| 51 | + %add3 = add nsw i32 %i.02, %xb |
| 52 | + %cmp = icmp slt i32 %add3, 32000 |
| 53 | + br i1 %cmp, label %for.body, label %for.end.loopexit, !llvm.loop !0 |
| 54 | + |
| 55 | +for.end.loopexit: |
| 56 | + br label %for.end |
| 57 | + |
| 58 | +for.end: |
| 59 | + ret void |
| 60 | +} |
| 61 | + |
| 62 | +!0 = distinct !{!0, !1} |
| 63 | +!1 = !{!"llvm.loop.mustprogress"} |
| 64 | +;. |
| 65 | +; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]]} |
| 66 | +; CHECK: [[META1]] = !{!"llvm.loop.mustprogress"} |
| 67 | +;. |
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