derek.holloway
7502bf64a4
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100 lines
4.9 KiB
LLVM
100 lines
4.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes="loop-flatten" -verify-scev -S < %s | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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; This shouldn't flatten, as the inner add is used by a lcssa.
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define i32 @test() {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_COND1_PREHEADER_I:%.*]]
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; CHECK: for.cond1.preheader.i:
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; CHECK-NEXT: [[L_011_I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[ADD6_I:%.*]], [[FOR_INC5_I:%.*]] ]
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; CHECK-NEXT: br label [[WHILE_COND_I_PREHEADER_I:%.*]]
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; CHECK: while.cond.i.preheader.i:
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; CHECK-NEXT: [[STOREMERGE9_I:%.*]] = phi i32 [ 0, [[FOR_COND1_PREHEADER_I]] ], [ [[ADD_I:%.*]], [[WHILE_COND_I_PREHEADER_I]] ]
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; CHECK-NEXT: [[ADD_I]] = add nuw nsw i32 [[STOREMERGE9_I]], 1
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; CHECK-NEXT: [[CMP2_I:%.*]] = icmp ult i32 [[STOREMERGE9_I]], 5
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; CHECK-NEXT: br i1 [[CMP2_I]], label [[WHILE_COND_I_PREHEADER_I]], label [[FOR_INC5_I]]
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; CHECK: for.inc5.i:
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; CHECK-NEXT: [[ADD_I_LCSSA:%.*]] = phi i32 [ [[ADD_I]], [[WHILE_COND_I_PREHEADER_I]] ]
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; CHECK-NEXT: [[ADD6_I]] = add nuw nsw i32 [[L_011_I]], 1
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; CHECK-NEXT: [[EXITCOND_NOT_I:%.*]] = icmp eq i32 [[ADD6_I]], 6
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; CHECK-NEXT: br i1 [[EXITCOND_NOT_I]], label [[E_EXIT:%.*]], label [[FOR_COND1_PREHEADER_I]]
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; CHECK: e.exit:
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; CHECK-NEXT: [[ADD_I_LCSSA_LCSSA:%.*]] = phi i32 [ [[ADD_I_LCSSA]], [[FOR_INC5_I]] ]
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; CHECK-NEXT: ret i32 [[ADD_I_LCSSA_LCSSA]]
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;
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entry:
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br label %for.cond1.preheader.i
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for.cond1.preheader.i: ; preds = %for.inc5.i, %entry
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%l.011.i = phi i32 [ 0, %entry ], [ %add6.i, %for.inc5.i ]
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br label %while.cond.i.preheader.i
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while.cond.i.preheader.i: ; preds = %while.cond.i.preheader.i, %for.cond1.preheader.i
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%storemerge9.i = phi i32 [ 0, %for.cond1.preheader.i ], [ %add.i, %while.cond.i.preheader.i ]
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%add.i = add nuw nsw i32 %storemerge9.i, 1
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%cmp2.i = icmp ult i32 %storemerge9.i, 5
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br i1 %cmp2.i, label %while.cond.i.preheader.i, label %for.inc5.i
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for.inc5.i: ; preds = %while.cond.i.preheader.i
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%add.i.lcssa = phi i32 [ %add.i, %while.cond.i.preheader.i ]
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%add6.i = add nuw nsw i32 %l.011.i, 1
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%exitcond.not.i = icmp eq i32 %add6.i, 6
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br i1 %exitcond.not.i, label %e.exit, label %for.cond1.preheader.i
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e.exit: ; preds = %for.inc5.i
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%add.i.lcssa.lcssa = phi i32 [ %add.i.lcssa, %for.inc5.i ]
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ret i32 %add.i.lcssa.lcssa
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}
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define i32 @test64() {
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; CHECK-LABEL: @test64(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_COND1_PREHEADER_I:%.*]]
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; CHECK: for.cond1.preheader.i:
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; CHECK-NEXT: [[L_011_I:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[ADD6_I:%.*]], [[FOR_INC5_I:%.*]] ]
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; CHECK-NEXT: br label [[WHILE_COND_I_PREHEADER_I:%.*]]
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; CHECK: while.cond.i.preheader.i:
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; CHECK-NEXT: [[STOREMERGE9_I:%.*]] = phi i64 [ 0, [[FOR_COND1_PREHEADER_I]] ], [ [[ADD_I:%.*]], [[WHILE_COND_I_PREHEADER_I]] ]
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; CHECK-NEXT: [[ADD_I]] = add nuw nsw i64 [[STOREMERGE9_I]], 1
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; CHECK-NEXT: [[CMP2_I:%.*]] = icmp ult i64 [[STOREMERGE9_I]], 5
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; CHECK-NEXT: br i1 [[CMP2_I]], label [[WHILE_COND_I_PREHEADER_I]], label [[FOR_INC5_I]]
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; CHECK: for.inc5.i:
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; CHECK-NEXT: [[ADD_I_LCSSA_WIDEN:%.*]] = phi i64 [ [[ADD_I]], [[WHILE_COND_I_PREHEADER_I]] ]
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; CHECK-NEXT: [[ADD_I_LCSSA:%.*]] = trunc i64 [[ADD_I_LCSSA_WIDEN]] to i32
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; CHECK-NEXT: [[ADD6_I]] = add nuw nsw i64 [[L_011_I]], 1
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; CHECK-NEXT: [[EXITCOND_NOT_I:%.*]] = icmp eq i64 [[ADD6_I]], 6
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; CHECK-NEXT: br i1 [[EXITCOND_NOT_I]], label [[E_EXIT:%.*]], label [[FOR_COND1_PREHEADER_I]]
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; CHECK: e.exit:
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; CHECK-NEXT: [[ADD_I_LCSSA_LCSSA:%.*]] = phi i32 [ [[ADD_I_LCSSA]], [[FOR_INC5_I]] ]
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; CHECK-NEXT: ret i32 [[ADD_I_LCSSA_LCSSA]]
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;
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entry:
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br label %for.cond1.preheader.i
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for.cond1.preheader.i: ; preds = %for.inc5.i, %entry
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%l.011.i = phi i64 [ 0, %entry ], [ %add6.i, %for.inc5.i ]
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br label %while.cond.i.preheader.i
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while.cond.i.preheader.i: ; preds = %while.cond.i.preheader.i, %for.cond1.preheader.i
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%storemerge9.i = phi i64 [ 0, %for.cond1.preheader.i ], [ %add.i, %while.cond.i.preheader.i ]
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%add.i = add nuw nsw i64 %storemerge9.i, 1
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%cmp2.i = icmp ult i64 %storemerge9.i, 5
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br i1 %cmp2.i, label %while.cond.i.preheader.i, label %for.inc5.i
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for.inc5.i: ; preds = %while.cond.i.preheader.i
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%add.i.lcssa.widen = phi i64 [ %add.i, %while.cond.i.preheader.i ]
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%add.i.lcssa = trunc i64 %add.i.lcssa.widen to i32
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%add6.i = add nuw nsw i64 %l.011.i, 1
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%exitcond.not.i = icmp eq i64 %add6.i, 6
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br i1 %exitcond.not.i, label %e.exit, label %for.cond1.preheader.i
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e.exit: ; preds = %for.inc5.i
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%add.i.lcssa.lcssa = phi i32 [ %add.i.lcssa, %for.inc5.i ]
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ret i32 %add.i.lcssa.lcssa
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}
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