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|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=instcombine -instcombine-infinite-loop-threshold=2 < %s | FileCheck %s
; This used to cause on infinite instcombine loop.
define void @test(i1 %c) {
; CHECK-LABEL: @test(
; CHECK-NEXT: bb16:
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB17:%.*]], label [[BB24:%.*]]
; CHECK: bb17:
; CHECK-NEXT: [[I:%.*]] = phi ptr [ [[DOTIN1:%.*]], [[BB47:%.*]] ], [ undef, [[BB16:%.*]] ]
; CHECK-NEXT: store ptr [[I]], ptr undef, align 8
; CHECK-NEXT: ret void
; CHECK: bb24:
; CHECK-NEXT: br i1 [[C]], label [[BB44:%.*]], label [[BB49:%.*]]
; CHECK: bb44:
; CHECK-NEXT: [[TMP46:%.*]] = load ptr, ptr inttoptr (i64 16 to ptr), align 16
; CHECK-NEXT: br label [[BB47]]
; CHECK: bb47:
; CHECK-NEXT: [[DOTIN1]] = phi ptr [ [[DOTIN:%.*]], [[BB150:%.*]] ], [ [[TMP122:%.*]], [[BB119:%.*]] ], [ [[TMP103:%.*]], [[BB101:%.*]] ], [ [[TMP93:%.*]], [[BB91:%.*]] ], [ [[TMP83:%.*]], [[BB81:%.*]] ], [ [[TMP70:%.*]], [[BB67:%.*]] ], [ [[TMP58:%.*]], [[BB56:%.*]] ], [ [[TMP46]], [[BB44]] ]
; CHECK-NEXT: br label [[BB17]]
; CHECK: bb49:
; CHECK-NEXT: br i1 [[C]], label [[BB56]], label [[BB59:%.*]]
; CHECK: bb56:
; CHECK-NEXT: [[TMP58]] = load ptr, ptr inttoptr (i64 16 to ptr), align 16
; CHECK-NEXT: br label [[BB47]]
; CHECK: bb59:
; CHECK-NEXT: br i1 [[C]], label [[BB67]], label [[BB71:%.*]]
; CHECK: bb67:
; CHECK-NEXT: [[TMP70]] = load ptr, ptr inttoptr (i64 16 to ptr), align 16
; CHECK-NEXT: br label [[BB47]]
; CHECK: bb71:
; CHECK-NEXT: br i1 [[C]], label [[BB81]], label [[BB84:%.*]]
; CHECK: bb81:
; CHECK-NEXT: [[TMP83]] = load ptr, ptr inttoptr (i64 16 to ptr), align 16
; CHECK-NEXT: br label [[BB47]]
; CHECK: bb84:
; CHECK-NEXT: br i1 [[C]], label [[BB91]], label [[BB94:%.*]]
; CHECK: bb91:
; CHECK-NEXT: [[TMP93]] = load ptr, ptr inttoptr (i64 16 to ptr), align 16
; CHECK-NEXT: br label [[BB47]]
; CHECK: bb94:
; CHECK-NEXT: br i1 [[C]], label [[BB101]], label [[BB104:%.*]]
; CHECK: bb101:
; CHECK-NEXT: [[TMP103]] = load ptr, ptr inttoptr (i64 16 to ptr), align 16
; CHECK-NEXT: br label [[BB47]]
; CHECK: bb104:
; CHECK-NEXT: br i1 [[C]], label [[BB119]], label [[BB123:%.*]]
; CHECK: bb119:
; CHECK-NEXT: [[TMP122]] = load ptr, ptr inttoptr (i64 16 to ptr), align 16
; CHECK-NEXT: br label [[BB47]]
; CHECK: bb123:
; CHECK-NEXT: br i1 [[C]], label [[BB147:%.*]], label [[BB152:%.*]]
; CHECK: bb147:
; CHECK-NEXT: [[TMP149:%.*]] = load ptr, ptr inttoptr (i64 16 to ptr), align 16
; CHECK-NEXT: br label [[BB150]]
; CHECK: bb150:
; CHECK-NEXT: [[DOTIN]] = phi ptr [ [[TMP184:%.*]], [[BB152]] ], [ [[TMP149]], [[BB147]] ]
; CHECK-NEXT: br label [[BB47]]
; CHECK: bb152:
; CHECK-NEXT: [[TMP184]] = load ptr, ptr inttoptr (i64 16 to ptr), align 16
; CHECK-NEXT: store i1 true, ptr poison, align 1
; CHECK-NEXT: br label [[BB150]]
;
bb16:
br i1 %c, label %bb17, label %bb24
bb17: ; preds = %bb47, %bb16
%i = phi ptr [ %.in1, %bb47 ], [ undef, %bb16 ]
store ptr %i, ptr undef, align 8
ret void
bb24: ; preds = %bb16
br i1 %c, label %bb44, label %bb49
bb44: ; preds = %bb24
%tmp46 = load ptr, ptr inttoptr (i64 16 to ptr), align 16
br label %bb47
bb47: ; preds = %bb150, %bb119, %bb101, %bb91, %bb81, %bb67, %bb56, %bb44
%.in1 = phi ptr [ %.in, %bb150 ], [ %tmp122, %bb119 ], [ %tmp103, %bb101 ], [ %tmp93, %bb91 ], [ %tmp83, %bb81 ], [ %tmp70, %bb67 ], [ %tmp58, %bb56 ], [ %tmp46, %bb44 ]
br label %bb17
bb49: ; preds = %bb24
br i1 %c, label %bb56, label %bb59
bb56: ; preds = %bb49
%tmp58 = load ptr, ptr inttoptr (i64 16 to ptr), align 16
br label %bb47
bb59: ; preds = %bb49
br i1 %c, label %bb67, label %bb71
bb67: ; preds = %bb59
%tmp70 = load ptr, ptr inttoptr (i64 16 to ptr), align 16
br label %bb47
bb71: ; preds = %bb59
br i1 %c, label %bb81, label %bb84
bb81: ; preds = %bb71
%tmp83 = load ptr, ptr inttoptr (i64 16 to ptr), align 16
br label %bb47
bb84: ; preds = %bb71
br i1 %c, label %bb91, label %bb94
bb91: ; preds = %bb84
%tmp93 = load ptr, ptr inttoptr (i64 16 to ptr), align 16
br label %bb47
bb94: ; preds = %bb84
br i1 %c, label %bb101, label %bb104
bb101: ; preds = %bb94
%tmp103 = load ptr, ptr inttoptr (i64 16 to ptr), align 16
br label %bb47
bb104: ; preds = %bb94
br i1 %c, label %bb119, label %bb123
bb119: ; preds = %bb104
%tmp122 = load ptr, ptr inttoptr (i64 16 to ptr), align 16
br label %bb47
bb123: ; preds = %bb104
br i1 %c, label %bb147, label %bb152
bb147: ; preds = %bb123
%tmp149 = load ptr, ptr inttoptr (i64 16 to ptr), align 16
br label %bb150
bb150: ; preds = %bb152, %bb147
%.in = phi ptr [ %tmp184, %bb152 ], [ %tmp149, %bb147 ]
br label %bb47
bb152: ; preds = %bb123
%tmp184 = load ptr, ptr inttoptr (i64 16 to ptr), align 16
call void undef()
br label %bb150
}
; This used to cause an instcombine loop when the problem above was
; addressed in a non-robust fashion.
%type_1 = type {}
%type_2 = type {}
%type_3 = type {}
define void @test_2(i1 %c) local_unnamed_addr {
; CHECK-LABEL: @test_2(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[WHILE_COND:%.*]]
; CHECK: while.cond:
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: br i1 [[C:%.*]], label [[COND_TRUE133:%.*]], label [[COND_FALSE138:%.*]]
; CHECK: cond.true133:
; CHECK-NEXT: br label [[COND_END144:%.*]]
; CHECK: cond.false138:
; CHECK-NEXT: store ptr poison, ptr null, align 4294967296
; CHECK-NEXT: br label [[COND_END144]]
; CHECK: cond.end144:
; CHECK-NEXT: br label [[WHILE_COND]]
;
entry:
br label %while.cond
while.cond: ; preds = %cond.end144, %entry
%link.0 = phi ptr [ undef, %entry ], [ %cond145, %cond.end144 ]
br label %for.cond
for.cond: ; preds = %while.cond
br i1 %c, label %cond.true133, label %cond.false138
cond.true133: ; preds = %for.cond
%i = load ptr, ptr undef, align 8
br label %cond.end144
cond.false138: ; preds = %for.cond
%i1 = load ptr, ptr undef, align 8
br label %cond.end144
cond.end144: ; preds = %cond.false138, %cond.true133
%cond145 = phi ptr [ %i, %cond.true133 ], [ %i1, %cond.false138 ]
br label %while.cond
}
|
