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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -o - -structurizecfg < %s | FileCheck %s
;
; TODO: eliminate redundant phis for the loop counter
;
define void @test1() {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: Flow:
; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ [[CTR_NEXT:%.*]], [[LOOP_B:%.*]] ], [ [[CTR_NEXT]], [[LOOP_A:%.*]] ]
; CHECK-NEXT: br label [[FLOW1:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[CTR:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[TMP1:%.*]], [[FLOW1]] ]
; CHECK-NEXT: [[CTR_NEXT]] = add i32 [[CTR]], 1
; CHECK-NEXT: br i1 undef, label [[LOOP_A]], label [[FLOW1]]
; CHECK: loop.a:
; CHECK-NEXT: br i1 undef, label [[LOOP_B]], label [[FLOW:%.*]]
; CHECK: loop.b:
; CHECK-NEXT: br label [[FLOW]]
; CHECK: Flow1:
; CHECK-NEXT: [[TMP1]] = phi i32 [ [[TMP0]], [[FLOW]] ], [ undef, [[LOOP]] ]
; CHECK-NEXT: [[TMP2:%.*]] = phi i1 [ false, [[FLOW]] ], [ true, [[LOOP]] ]
; CHECK-NEXT: br i1 [[TMP2]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%ctr = phi i32 [ 0, %entry ], [ %ctr.next, %loop.a ], [ %ctr.next, %loop.b ]
%ctr.next = add i32 %ctr, 1
br i1 undef, label %exit, label %loop.a
loop.a:
br i1 undef, label %loop, label %loop.b
loop.b:
br label %loop
exit:
ret void
}
|
