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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=indvars -S < %s | FileCheck %s
@b = common global i32 0, align 4
@c = common global i32 0, align 4
@a = common global i32 0, align 4
declare void @abort() #1
; Function Attrs: nounwind ssp uwtable
define i32 @main() {
; CHECK-LABEL: @main(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_COND1_PREHEADER:%.*]]
; CHECK: for.cond1.preheader:
; CHECK-NEXT: br label [[FOR_BODY3:%.*]]
; CHECK: for.body3:
; CHECK-NEXT: br i1 false, label [[FOR_BODY3]], label [[FOR_END:%.*]]
; CHECK: for.end:
; CHECK-NEXT: br i1 false, label [[FOR_COND1_PREHEADER]], label [[FOR_END6:%.*]]
; CHECK: for.end6:
; CHECK-NEXT: [[OR_LCSSA_LCSSA:%.*]] = phi i32 [ -1, [[FOR_END]] ]
; CHECK-NEXT: store i32 [[OR_LCSSA_LCSSA]], ptr @a, align 4
; CHECK-NEXT: [[CMP7:%.*]] = icmp eq i32 [[OR_LCSSA_LCSSA]], -1
; CHECK-NEXT: br i1 [[CMP7]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: tail call void @abort()
; CHECK-NEXT: unreachable
; CHECK: if.end:
; CHECK-NEXT: ret i32 0
;
entry:
%a.promoted13 = load i32, ptr @a, align 4
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %entry, %for.end
%or.lcssa14 = phi i32 [ %a.promoted13, %entry ], [ %or.lcssa, %for.end ]
%d.010 = phi i32 [ 1, %entry ], [ 0, %for.end ]
br label %for.body3
for.body3: ; preds = %for.cond1.preheader, %for.body3
%inc12 = phi i32 [ 0, %for.cond1.preheader ], [ %inc, %for.body3 ]
%or11 = phi i32 [ %or.lcssa14, %for.cond1.preheader ], [ %or, %for.body3 ]
%add = sub i32 %inc12, %d.010
%or = or i32 %or11, %add
%inc = add i32 %inc12, 1
br i1 false, label %for.body3, label %for.end
for.end: ; preds = %for.body3
%or.lcssa = phi i32 [ %or, %for.body3 ]
br i1 false, label %for.cond1.preheader, label %for.end6
for.end6: ; preds = %for.end
%or.lcssa.lcssa = phi i32 [ %or.lcssa, %for.end ]
store i32 %or.lcssa.lcssa, ptr @a, align 4
%cmp7 = icmp eq i32 %or.lcssa.lcssa, -1
br i1 %cmp7, label %if.end, label %if.then
if.then: ; preds = %for.end6
tail call void @abort() #2
unreachable
if.end: ; preds = %for.end6
ret i32 0
}
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