671 lines
21 KiB
LLVM
671 lines
21 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -S -loop-unroll -verify-loop-info | FileCheck %s
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; RUN: opt < %s -S -passes='require<opt-remark-emit>,loop-unroll,verify<loops>' | FileCheck %s
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;
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; Unit tests for LoopInfo::markAsRemoved.
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declare i1 @check() nounwind
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; Ensure that tail->inner is removed and rely on verify-loopinfo to
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; check soundness.
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define void @skiplevelexit() nounwind {
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; CHECK-LABEL: @skiplevelexit(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[OUTER:%.*]]
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; CHECK: outer:
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; CHECK-NEXT: br label [[INNER:%.*]]
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; CHECK: inner:
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; CHECK-NEXT: [[TMP0:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 true, label [[OUTER_BACKEDGE:%.*]], label [[TAIL:%.*]]
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; CHECK: tail:
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; CHECK-NEXT: ret void
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; CHECK: outer.backedge:
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; CHECK-NEXT: br label [[OUTER]]
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;
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entry:
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br label %outer
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outer:
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br label %inner
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inner:
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%iv = phi i32 [ 0, %outer ], [ %inc, %tail ]
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%inc = add i32 %iv, 1
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call zeroext i1 @check()
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br i1 true, label %outer.backedge, label %tail
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tail:
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br i1 false, label %inner, label %exit
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outer.backedge:
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br label %outer
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exit:
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ret void
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}
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; Remove the middle loop of a triply nested loop tree.
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; Ensure that only the middle loop is removed and rely on verify-loopinfo to
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; check soundness.
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define void @unloopNested() {
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; CHECK-LABEL: @unloopNested(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[WHILE_COND_OUTER:%.*]]
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; CHECK: while.cond.outer:
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; CHECK-NEXT: br label [[WHILE_COND:%.*]]
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; CHECK: while.cond:
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; CHECK-NEXT: [[CMP:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP]], label [[WHILE_BODY:%.*]], label [[WHILE_END:%.*]]
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; CHECK: while.body:
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; CHECK-NEXT: [[CMP3:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: br label [[RETURN:%.*]]
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; CHECK: if.end:
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; CHECK-NEXT: [[CMP_I48:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP_I48]], label [[IF_THEN_I:%.*]], label [[IF_ELSE20_I:%.*]]
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; CHECK: if.then.i:
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; CHECK-NEXT: [[CMP8_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP8_I]], label [[MERGE:%.*]], label [[IF_ELSE_I:%.*]]
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; CHECK: if.else.i:
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: if.else20.i:
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; CHECK-NEXT: [[CMP25_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP25_I]], label [[MERGE]], label [[IF_ELSE28_I:%.*]]
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; CHECK: if.else28.i:
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: merge:
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; CHECK-NEXT: br label [[WHILE_COND2_I:%.*]]
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; CHECK: while.cond2.i:
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; CHECK-NEXT: [[CMP_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP_I]], label [[WHILE_COND2_BACKEDGE_I:%.*]], label [[WHILE_END_I:%.*]]
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; CHECK: while.cond2.backedge.i:
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; CHECK-NEXT: br label [[WHILE_COND2_I]]
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; CHECK: while.end.i:
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; CHECK-NEXT: [[CMP1114_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP1114_I]], label [[WHILE_BODY12_LR_PH_I:%.*]], label [[WHILE_END14_I:%.*]]
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; CHECK: while.body12.lr.ph.i:
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; CHECK-NEXT: br label [[WHILE_END14_I]]
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; CHECK: while.end14.i:
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; CHECK-NEXT: [[CALL15_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CALL15_I]], label [[IF_END_I:%.*]], label [[EXIT:%.*]]
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; CHECK: if.end.i:
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; CHECK-NEXT: br label [[WHILE_COND2_BACKEDGE_I]]
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; CHECK: exit:
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; CHECK-NEXT: br label [[WHILE_COND_OUTER]]
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; CHECK: while.end:
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; CHECK-NEXT: br label [[RETURN]]
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; CHECK: return:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %while.cond.outer
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while.cond.outer:
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br label %while.cond
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while.cond:
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%cmp = call zeroext i1 @check()
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br i1 %cmp, label %while.body, label %while.end
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while.body:
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%cmp3 = call zeroext i1 @check()
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br i1 %cmp3, label %if.then, label %if.end
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if.then:
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br label %return
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if.end:
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%cmp.i48 = call zeroext i1 @check()
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br i1 %cmp.i48, label %if.then.i, label %if.else20.i
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if.then.i:
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%cmp8.i = call zeroext i1 @check()
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br i1 %cmp8.i, label %merge, label %if.else.i
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if.else.i:
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br label %merge
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if.else20.i:
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%cmp25.i = call zeroext i1 @check()
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br i1 %cmp25.i, label %merge, label %if.else28.i
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if.else28.i:
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br label %merge
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merge:
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br label %while.cond2.i
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while.cond2.i:
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%cmp.i = call zeroext i1 @check()
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br i1 %cmp.i, label %while.cond2.backedge.i, label %while.end.i
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while.cond2.backedge.i:
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br label %while.cond2.i
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while.end.i:
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%cmp1114.i = call zeroext i1 @check()
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br i1 %cmp1114.i, label %while.body12.lr.ph.i, label %while.end14.i
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while.body12.lr.ph.i:
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br label %while.end14.i
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while.end14.i:
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%call15.i = call zeroext i1 @check()
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br i1 %call15.i, label %if.end.i, label %exit
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if.end.i:
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br label %while.cond2.backedge.i
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exit:
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br i1 false, label %while.cond, label %if.else
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if.else:
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br label %while.cond.outer
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while.end:
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br label %return
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return:
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ret void
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}
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; Remove the middle loop of a deeply nested loop tree.
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; Ensure that only the middle loop is removed and rely on verify-loopinfo to
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; check soundness.
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;
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; This test must be disabled until trip count computation can be optimized...
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; rdar:14038809 [SCEV]: Optimize trip count computation for multi-exit loops.
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define void @unloopDeepNested() nounwind {
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; CHECK-LABEL: @unloopDeepNested(
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; CHECK-NEXT: for.cond8.preheader.i:
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; CHECK-NEXT: [[CMP113_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP113_I]], label [[MAKE_DATA_EXIT:%.*]], label [[FOR_BODY13_LR_PH_I:%.*]]
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; CHECK: for.body13.lr.ph.i:
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; CHECK-NEXT: br label [[MAKE_DATA_EXIT]]
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; CHECK: make_data.exit:
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; CHECK-NEXT: br label [[WHILE_COND_OUTER_OUTER:%.*]]
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; CHECK: while.cond.outer.outer:
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; CHECK-NEXT: br label [[WHILE_COND_OUTER:%.*]]
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; CHECK: while.cond.outer:
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; CHECK-NEXT: br label [[WHILE_COND:%.*]]
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; CHECK: while.cond:
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; CHECK-NEXT: br label [[WHILE_COND_OUTER_I:%.*]]
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; CHECK: while.cond.outer.i:
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; CHECK-NEXT: [[TMP192_PH_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[TMP192_PH_I]], label [[WHILE_COND_OUTER_SPLIT_US_I:%.*]], label [[WHILE_BODY_LOOPEXIT:%.*]]
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; CHECK: while.cond.outer.split.us.i:
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; CHECK-NEXT: br label [[WHILE_COND_US_I:%.*]]
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; CHECK: while.cond.us.i:
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; CHECK-NEXT: [[CMP_US_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP_US_I]], label [[NEXT_DATA_EXIT:%.*]], label [[WHILE_BODY_US_I:%.*]]
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; CHECK: while.body.us.i:
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; CHECK-NEXT: [[CMP7_US_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP7_US_I]], label [[IF_THEN_US_I:%.*]], label [[IF_ELSE_I:%.*]]
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; CHECK: if.then.us.i:
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; CHECK-NEXT: br label [[WHILE_COND_US_I]]
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; CHECK: if.else.i:
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; CHECK-NEXT: br label [[WHILE_COND_OUTER_I]]
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; CHECK: next_data.exit:
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; CHECK-NEXT: [[TMP192_PH_I_LCSSA28:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[TMP192_PH_I_LCSSA28]], label [[WHILE_END:%.*]], label [[WHILE_BODY:%.*]]
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; CHECK: while.body.loopexit:
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; CHECK-NEXT: br label [[WHILE_BODY]]
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; CHECK: while.body:
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; CHECK-NEXT: br label [[WHILE_COND_I:%.*]]
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; CHECK: while.cond.i:
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; CHECK-NEXT: [[CMP_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP_I]], label [[VALID_DATA_EXIT:%.*]], label [[WHILE_BODY_I:%.*]]
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; CHECK: while.body.i:
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; CHECK-NEXT: [[CMP7_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP7_I]], label [[VALID_DATA_EXIT]], label [[IF_END_I:%.*]]
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; CHECK: if.end.i:
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; CHECK-NEXT: br label [[WHILE_COND_I]]
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; CHECK: valid_data.exit:
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; CHECK-NEXT: [[CMP:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN12:%.*]], label [[IF_END:%.*]]
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; CHECK: if.then12:
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; CHECK-NEXT: br label [[IF_END]]
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; CHECK: if.end:
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; CHECK-NEXT: [[TOBOOL3_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[TOBOOL3_I]], label [[COPY_DATA_EXIT:%.*]], label [[WHILE_BODY_LR_PH_I:%.*]]
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; CHECK: while.body.lr.ph.i:
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; CHECK-NEXT: br label [[COPY_DATA_EXIT]]
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; CHECK: copy_data.exit:
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; CHECK-NEXT: [[CMP38:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP38]], label [[IF_THEN39:%.*]], label [[WHILE_COND_OUTER]]
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; CHECK: if.then39:
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; CHECK-NEXT: [[CMP5_I:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP5_I]], label [[WHILE_COND_OUTER_OUTER_BACKEDGE:%.*]], label [[FOR_COND8_PREHEADER_I8_THREAD:%.*]]
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; CHECK: for.cond8.preheader.i8.thread:
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; CHECK-NEXT: br label [[WHILE_COND_OUTER_OUTER_BACKEDGE]]
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; CHECK: while.cond.outer.outer.backedge:
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; CHECK-NEXT: br label [[WHILE_COND_OUTER_OUTER]]
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; CHECK: while.end:
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; CHECK-NEXT: ret void
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;
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for.cond8.preheader.i:
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%cmp113.i = call zeroext i1 @check()
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br i1 %cmp113.i, label %make_data.exit, label %for.body13.lr.ph.i
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for.body13.lr.ph.i:
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br label %make_data.exit
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make_data.exit:
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br label %while.cond.outer.outer
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while.cond.outer.outer:
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br label %while.cond.outer
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while.cond.outer:
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br label %while.cond
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while.cond:
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br label %while.cond.outer.i
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while.cond.outer.i:
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%tmp192.ph.i = call zeroext i1 @check()
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br i1 %tmp192.ph.i, label %while.cond.outer.split.us.i, label %while.body.loopexit
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while.cond.outer.split.us.i:
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br label %while.cond.us.i
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while.cond.us.i:
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%cmp.us.i = call zeroext i1 @check()
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br i1 %cmp.us.i, label %next_data.exit, label %while.body.us.i
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while.body.us.i:
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%cmp7.us.i = call zeroext i1 @check()
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br i1 %cmp7.us.i, label %if.then.us.i, label %if.else.i
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if.then.us.i:
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br label %while.cond.us.i
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if.else.i:
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br label %while.cond.outer.i
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next_data.exit:
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%tmp192.ph.i.lcssa28 = call zeroext i1 @check()
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br i1 %tmp192.ph.i.lcssa28, label %while.end, label %while.body
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while.body.loopexit:
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br label %while.body
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while.body:
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br label %while.cond.i
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while.cond.i:
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%cmp.i = call zeroext i1 @check()
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br i1 %cmp.i, label %valid_data.exit, label %while.body.i
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while.body.i:
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%cmp7.i = call zeroext i1 @check()
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br i1 %cmp7.i, label %valid_data.exit, label %if.end.i
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if.end.i:
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br label %while.cond.i
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valid_data.exit:
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br i1 true, label %if.then, label %while.cond
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if.then:
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%cmp = call zeroext i1 @check()
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br i1 %cmp, label %if.then12, label %if.end
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if.then12:
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br label %if.end
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if.end:
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%tobool3.i = call zeroext i1 @check()
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br i1 %tobool3.i, label %copy_data.exit, label %while.body.lr.ph.i
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while.body.lr.ph.i:
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br label %copy_data.exit
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copy_data.exit:
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%cmp38 = call zeroext i1 @check()
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br i1 %cmp38, label %if.then39, label %while.cond.outer
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if.then39:
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%cmp5.i = call zeroext i1 @check()
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br i1 %cmp5.i, label %while.cond.outer.outer.backedge, label %for.cond8.preheader.i8.thread
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for.cond8.preheader.i8.thread:
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br label %while.cond.outer.outer.backedge
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while.cond.outer.outer.backedge:
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br label %while.cond.outer.outer
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while.end:
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ret void
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}
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; Remove a nested loop with irreducible control flow.
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; Ensure that only the middle loop is removed and rely on verify-loopinfo to
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; check soundness.
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define void @unloopIrreducible() nounwind {
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; CHECK-LABEL: @unloopIrreducible(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[CMP2113:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP2113]], label [[FOR_BODY22_LR_PH:%.*]], label [[FOR_INC163:%.*]]
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; CHECK: for.body22.lr.ph:
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; CHECK-NEXT: br label [[FOR_BODY22:%.*]]
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; CHECK: for.body22:
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; CHECK-NEXT: br label [[FOR_BODY33:%.*]]
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; CHECK: for.body33:
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; CHECK-NEXT: br label [[FOR_END:%.*]]
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; CHECK: for.end:
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; CHECK-NEXT: [[CMP424:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP424]], label [[FOR_BODY43_LR_PH:%.*]], label [[FOR_END93:%.*]]
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; CHECK: for.body43.lr.ph:
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; CHECK-NEXT: br label [[FOR_END93]]
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; CHECK: for.end93:
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; CHECK-NEXT: [[CMP96:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP96]], label [[IF_THEN97:%.*]], label [[FOR_COND103:%.*]]
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; CHECK: if.then97:
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; CHECK-NEXT: br label [[FOR_COND103T:%.*]]
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; CHECK: for.cond103t:
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; CHECK-NEXT: br label [[FOR_COND103]]
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; CHECK: for.cond103:
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; CHECK-NEXT: [[CMP105:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP105]], label [[FOR_BODY106:%.*]], label [[FOR_END120:%.*]]
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; CHECK: for.body106:
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; CHECK-NEXT: [[CMP108:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP108]], label [[IF_THEN109:%.*]], label [[FOR_INC117:%.*]]
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; CHECK: if.then109:
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; CHECK-NEXT: br label [[FOR_INC117]]
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; CHECK: for.inc117:
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; CHECK-NEXT: br label [[FOR_COND103T]]
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; CHECK: for.end120:
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; CHECK-NEXT: br label [[FOR_INC159:%.*]]
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; CHECK: for.inc159:
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; CHECK-NEXT: br label [[FOR_INC163]]
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; CHECK: for.inc163:
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; CHECK-NEXT: [[CMP12:%.*]] = call zeroext i1 @check()
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; CHECK-NEXT: br i1 [[CMP12]], label [[FOR_BODY]], label [[FOR_END166:%.*]]
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; CHECK: for.end166:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body:
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%cmp2113 = call zeroext i1 @check()
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br i1 %cmp2113, label %for.body22.lr.ph, label %for.inc163
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for.body22.lr.ph:
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br label %for.body22
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for.body22:
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br label %for.body33
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for.body33:
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br label %for.end
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for.end:
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%cmp424 = call zeroext i1 @check()
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br i1 %cmp424, label %for.body43.lr.ph, label %for.end93
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for.body43.lr.ph:
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br label %for.end93
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for.end93:
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%cmp96 = call zeroext i1 @check()
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br i1 %cmp96, label %if.then97, label %for.cond103
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if.then97:
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br label %for.cond103t
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for.cond103t:
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br label %for.cond103
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for.cond103:
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%cmp105 = call zeroext i1 @check()
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br i1 %cmp105, label %for.body106, label %for.end120
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for.body106:
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%cmp108 = call zeroext i1 @check()
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br i1 %cmp108, label %if.then109, label %for.inc117
|
|
|
|
if.then109:
|
|
br label %for.inc117
|
|
|
|
for.inc117:
|
|
br label %for.cond103t
|
|
|
|
for.end120:
|
|
br label %for.inc159
|
|
|
|
for.inc159:
|
|
br i1 false, label %for.body22, label %for.cond15.for.inc163_crit_edge
|
|
|
|
for.cond15.for.inc163_crit_edge:
|
|
br label %for.inc163
|
|
|
|
for.inc163:
|
|
%cmp12 = call zeroext i1 @check()
|
|
br i1 %cmp12, label %for.body, label %for.end166
|
|
|
|
for.end166:
|
|
ret void
|
|
|
|
}
|
|
|
|
; Remove a loop whose exit branches into a sibling loop.
|
|
; Ensure that only the loop is removed and rely on verify-loopinfo to
|
|
; check soundness.
|
|
define void @unloopCriticalEdge() nounwind {
|
|
; CHECK-LABEL: @unloopCriticalEdge(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[FOR_COND31:%.*]]
|
|
; CHECK: for.cond31:
|
|
; CHECK-NEXT: br i1 false, label [[FOR_BODY35:%.*]], label [[FOR_END94:%.*]]
|
|
; CHECK: for.body35:
|
|
; CHECK-NEXT: br label [[WHILE_COND_I_PREHEADER:%.*]]
|
|
; CHECK: while.cond.i.preheader:
|
|
; CHECK-NEXT: br i1 undef, label [[WHILE_COND_I_PREHEADER_SPLIT:%.*]], label [[WHILE_COND_OUTER_I_LOOPEXIT_SPLIT:%.*]]
|
|
; CHECK: while.cond.i.preheader.split:
|
|
; CHECK-NEXT: br label [[WHILE_COND_I:%.*]]
|
|
; CHECK: while.cond.i:
|
|
; CHECK-NEXT: br i1 true, label [[WHILE_COND_I]], label [[WHILE_COND_OUTER_I_LOOPEXIT:%.*]]
|
|
; CHECK: while.cond.outer.i.loopexit:
|
|
; CHECK-NEXT: br label [[WHILE_COND_OUTER_I_LOOPEXIT_SPLIT]]
|
|
; CHECK: while.cond.outer.i.loopexit.split:
|
|
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
|
|
; CHECK: while.body:
|
|
; CHECK-NEXT: br label [[FOR_END78:%.*]]
|
|
; CHECK: for.end78:
|
|
; CHECK-NEXT: br i1 false, label [[PROC2_EXIT:%.*]], label [[FOR_COND_I_PREHEADER:%.*]]
|
|
; CHECK: for.cond.i.preheader:
|
|
; CHECK-NEXT: br label [[FOR_COND_I:%.*]]
|
|
; CHECK: for.cond.i:
|
|
; CHECK-NEXT: br label [[FOR_COND_I]]
|
|
; CHECK: Proc2.exit:
|
|
; CHECK-NEXT: unreachable
|
|
; CHECK: for.end94:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %for.cond31
|
|
|
|
for.cond31:
|
|
br i1 undef, label %for.body35, label %for.end94
|
|
|
|
for.body35:
|
|
br label %while.cond.i.preheader
|
|
|
|
while.cond.i.preheader:
|
|
br i1 undef, label %while.cond.i.preheader.split, label %while.cond.outer.i.loopexit.split
|
|
|
|
while.cond.i.preheader.split:
|
|
br label %while.cond.i
|
|
|
|
while.cond.i:
|
|
br i1 true, label %while.cond.i, label %while.cond.outer.i.loopexit
|
|
|
|
while.cond.outer.i.loopexit:
|
|
br label %while.cond.outer.i.loopexit.split
|
|
|
|
while.cond.outer.i.loopexit.split:
|
|
br i1 false, label %while.cond.i.preheader, label %Func2.exit
|
|
|
|
Func2.exit:
|
|
br label %while.body
|
|
|
|
while.body:
|
|
br i1 false, label %while.body, label %while.end
|
|
|
|
while.end:
|
|
br label %for.end78
|
|
|
|
for.end78:
|
|
br i1 undef, label %Proc2.exit, label %for.cond.i.preheader
|
|
|
|
for.cond.i.preheader:
|
|
br label %for.cond.i
|
|
|
|
for.cond.i:
|
|
br label %for.cond.i
|
|
|
|
Proc2.exit:
|
|
br label %for.cond31
|
|
|
|
for.end94:
|
|
ret void
|
|
}
|
|
|
|
; Test UnloopUpdater::removeBlocksFromAncestors.
|
|
;
|
|
; Check that the loop backedge is removed from the middle loop 1699,
|
|
; but not the inner loop 1676.
|
|
define void @removeSubloopBlocks() nounwind {
|
|
; CHECK-LABEL: @removeSubloopBlocks(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[TRYAGAIN_OUTER:%.*]]
|
|
; CHECK: tryagain.outer:
|
|
; CHECK-NEXT: br label [[TRYAGAIN:%.*]]
|
|
; CHECK: tryagain:
|
|
; CHECK-NEXT: br i1 false, label [[SW_BB1669:%.*]], label [[SW_BB304:%.*]]
|
|
; CHECK: sw.bb304:
|
|
; CHECK-NEXT: ret void
|
|
; CHECK: sw.bb1669:
|
|
; CHECK-NEXT: br i1 true, label [[SW_DEFAULT1711:%.*]], label [[WHILE_COND1676_PREHEADER:%.*]]
|
|
; CHECK: while.cond1676.preheader:
|
|
; CHECK-NEXT: br label [[WHILE_COND1676:%.*]]
|
|
; CHECK: while.cond1676:
|
|
; CHECK-NEXT: br i1 true, label [[WHILE_END1699:%.*]], label [[WHILE_BODY1694:%.*]]
|
|
; CHECK: while.body1694:
|
|
; CHECK-NEXT: unreachable
|
|
; CHECK: while.end1699:
|
|
; CHECK-NEXT: br label [[SW_DEFAULT1711]]
|
|
; CHECK: sw.default1711:
|
|
; CHECK-NEXT: br label [[DEFCHAR:%.*]]
|
|
; CHECK: defchar:
|
|
; CHECK-NEXT: br i1 undef, label [[IF_END2413:%.*]], label [[IF_THEN2368:%.*]]
|
|
; CHECK: if.then2368:
|
|
; CHECK-NEXT: unreachable
|
|
; CHECK: if.end2413:
|
|
; CHECK-NEXT: unreachable
|
|
;
|
|
entry:
|
|
br label %tryagain.outer
|
|
|
|
tryagain.outer: ; preds = %sw.bb304, %entry
|
|
br label %tryagain
|
|
|
|
tryagain: ; preds = %while.end1699, %tryagain.outer
|
|
br i1 undef, label %sw.bb1669, label %sw.bb304
|
|
|
|
sw.bb304: ; preds = %tryagain
|
|
br i1 undef, label %return, label %tryagain.outer
|
|
|
|
sw.bb1669: ; preds = %tryagain
|
|
br i1 undef, label %sw.default1711, label %while.cond1676
|
|
|
|
while.cond1676: ; preds = %while.body1694, %sw.bb1669
|
|
br i1 undef, label %while.end1699, label %while.body1694
|
|
|
|
while.body1694: ; preds = %while.cond1676
|
|
br label %while.cond1676
|
|
|
|
while.end1699: ; preds = %while.cond1676
|
|
br i1 false, label %tryagain, label %sw.default1711
|
|
|
|
sw.default1711: ; preds = %while.end1699, %sw.bb1669, %tryagain
|
|
br label %defchar
|
|
|
|
defchar: ; preds = %sw.default1711, %sw.bb376
|
|
br i1 undef, label %if.end2413, label %if.then2368
|
|
|
|
if.then2368: ; preds = %defchar
|
|
unreachable
|
|
|
|
if.end2413: ; preds = %defchar
|
|
unreachable
|
|
|
|
return: ; preds = %sw.bb304
|
|
ret void
|
|
}
|
|
|
|
; PR11335: the most deeply nested block should be removed from the outer loop.
|
|
define void @removeSubloopBlocks2() nounwind {
|
|
; CHECK-LABEL: @removeSubloopBlocks2(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[TOBOOL_I:%.*]] = icmp ne i32 undef, 0
|
|
; CHECK-NEXT: br label [[LBL_616:%.*]]
|
|
; CHECK: lbl_616.loopexit:
|
|
; CHECK-NEXT: br label [[LBL_616]]
|
|
; CHECK: lbl_616:
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: br i1 false, label [[FOR_COND1_PREHEADER:%.*]], label [[LBL_616_LOOPEXIT:%.*]]
|
|
; CHECK: for.cond1.preheader:
|
|
; CHECK-NEXT: br label [[FOR_COND1:%.*]]
|
|
; CHECK: for.cond1.loopexit:
|
|
; CHECK-NEXT: unreachable
|
|
; CHECK: for.cond1:
|
|
; CHECK-NEXT: br i1 false, label [[FOR_BODY2:%.*]], label [[FOR_COND3:%.*]]
|
|
; CHECK: for.body2:
|
|
; CHECK-NEXT: br label [[FOR_COND_I:%.*]]
|
|
; CHECK: for.cond.i:
|
|
; CHECK-NEXT: br i1 [[TOBOOL_I]], label [[FOR_COND_I]], label [[FOR_COND1_LOOPEXIT:%.*]]
|
|
; CHECK: for.cond3:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%tobool.i = icmp ne i32 undef, 0
|
|
br label %lbl_616
|
|
|
|
lbl_616.loopexit: ; preds = %for.cond
|
|
br label %lbl_616
|
|
|
|
lbl_616: ; preds = %lbl_616.loopexit, %entry
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.cond3, %lbl_616
|
|
br i1 false, label %for.cond1.preheader, label %lbl_616.loopexit
|
|
|
|
for.cond1.preheader: ; preds = %for.cond
|
|
br label %for.cond1
|
|
|
|
for.cond1.loopexit: ; preds = %for.cond.i
|
|
br label %for.cond1
|
|
|
|
for.cond1: ; preds = %for.cond1.loopexit, %for.cond1.preheader
|
|
br i1 false, label %for.body2, label %for.cond3
|
|
|
|
for.body2: ; preds = %for.cond1
|
|
br label %for.cond.i
|
|
|
|
for.cond.i: ; preds = %for.cond.i, %for.body2
|
|
br i1 %tobool.i, label %for.cond.i, label %for.cond1.loopexit
|
|
|
|
for.cond3: ; preds = %for.cond1
|
|
br i1 false, label %for.cond, label %if.end
|
|
|
|
if.end: ; preds = %for.cond3
|
|
ret void
|
|
}
|