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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -loop-vectorize -enable-vplan-native-path -S %s | FileCheck %s
declare i1 @cond()
; Make sure we do not vectorize (or crash) on outer loops with uncomputable
; trip-counts.
define void @test() {
; CHECK-LABEL: @test(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR1_HEADER:%.*]]
; CHECK: for1.header:
; CHECK-NEXT: br label [[FOR2_HEADER:%.*]]
; CHECK: for2.header:
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR1_HEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR2_HEADER]] ]
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 0
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR1_LATCH:%.*]], label [[FOR2_HEADER]]
; CHECK: for1.latch:
; CHECK-NEXT: [[C:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C]], label [[EXIT:%.*]], label [[FOR1_HEADER]], !llvm.loop !0
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %for1.header
for1.header: ; preds = %for.cond.cleanup3, %for.cond1.preheader.lr.ph
br label %for2.header
for2.header: ; preds = %for.body10, %for.body10.preheader
%indvars.iv = phi i64 [ 0, %for1.header ], [ %indvars.iv.next, %for2.header ]
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 0
br i1 %exitcond, label %for1.latch, label %for2.header
for1.latch: ; preds = %for.cond.cleanup9
%c = call i1 @cond()
br i1 %c, label %exit, label %for1.header, !llvm.loop !0
exit: ; preds = %for.cond.cleanup3, %entry
ret void
}
!0 = distinct !{!0, !1}
!1 = !{!"llvm.loop.vectorize.enable", i1 true}
|
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