48 lines · plain
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -passes=loop-vectorize -enable-vplan-native-path -S %s | FileCheck %s3 4declare i1 @cond()5 6; Make sure we do not vectorize (or crash) on outer loops with uncomputable7; trip-counts.8 9define void @test() {10; CHECK-LABEL: @test(11; CHECK-NEXT: entry:12; CHECK-NEXT: br label [[FOR1_HEADER:%.*]]13; CHECK: for1.header:14; CHECK-NEXT: br label [[FOR2_HEADER:%.*]]15; CHECK: for2.header:16; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR1_HEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR2_HEADER]] ]17; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 118; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 019; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR1_LATCH:%.*]], label [[FOR2_HEADER]]20; CHECK: for1.latch:21; CHECK-NEXT: [[C:%.*]] = call i1 @cond()22; CHECK-NEXT: br i1 [[C]], label [[EXIT:%.*]], label [[FOR1_HEADER]], !llvm.loop !023; CHECK: exit:24; CHECK-NEXT: ret void25;26entry:27 br label %for1.header28 29for1.header: ; preds = %for.cond.cleanup3, %for.cond1.preheader.lr.ph30 br label %for2.header31 32for2.header: ; preds = %for.body10, %for.body10.preheader33 %indvars.iv = phi i64 [ 0, %for1.header ], [ %indvars.iv.next, %for2.header ]34 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 135 %exitcond = icmp eq i64 %indvars.iv.next, 036 br i1 %exitcond, label %for1.latch, label %for2.header37 38for1.latch: ; preds = %for.cond.cleanup939 %c = call i1 @cond()40 br i1 %c, label %exit, label %for1.header, !llvm.loop !041 42exit: ; preds = %for.cond.cleanup3, %entry43 ret void44}45 46!0 = distinct !{!0, !1}47!1 = !{!"llvm.loop.vectorize.enable", i1 true}48