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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -loop-simplifycfg -verify-scev < %s | FileCheck %s
; RUN: opt -S -loop-simplifycfg -verify-scev -enable-mssa-loop-dependency=true -verify-memoryssa < %s | FileCheck %s
; Verify that the scev information is still valid. Verification should not fail
define void @t_run_test() {
; CHECK-LABEL: @t_run_test(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label %[[LOOP_PH:.*]]
; CHECK: [[LOOP_PH]]:
; CHECK-NEXT: br label %[[LOOP_BODY:.*]]
; CHECK: [[LOOP_BODY]]:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, %[[LOOP_PH]] ], [ [[INC:%.*]], %[[LOOP_BODY]] ]
; CHECK-NEXT: [[INC]] = add i32 [[IV]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[INC]], 10
; CHECK-NEXT: br i1 [[CMP]], label %[[LOOP_BODY]], label %[[EXIT:.*]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: br label %[[LOOP_BODY2:.*]]
; CHECK: [[LOOP_BODY2]]:
; CHECK-NEXT: [[IV2:%.*]] = phi i32 [ 0, %[[EXIT]] ], [ [[INC2:%.*]], %[[LOOP_BODY2]] ]
; CHECK-NEXT: [[INC2]] = add i32 [[IV2]], 1
; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[INC2]], 10
; CHECK-NEXT: br i1 [[CMP2]], label %[[LOOP_BODY2]], label %[[EXIT2:.*]]
; CHECK: [[EXIT2]]:
; CHECK-NEXT: ret void
;
entry:
br label %loop.ph
loop.ph:
br label %loop.header
loop.header:
%iv = phi i32 [0, %loop.ph], [%inc, %loop.body]
br label %loop.body1
loop.body1:
br label %loop.body
loop.body:
%inc = add i32 %iv, 1
%cmp = icmp ult i32 %inc, 10
br i1 %cmp, label %loop.header, label %exit
exit:
br label %loop.body2
loop.body2:
%iv2 = phi i32 [0, %exit], [%inc2, %loop.body2]
%inc2 = add i32 %iv2, 1
%cmp2 = icmp ult i32 %inc2, 10
br i1 %cmp2, label %loop.body2, label %exit2
exit2:
ret void
}
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