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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; Check that no freeze instruction gets inserted before landingpad in a basic block
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
define i32 @propagate_freeze_in_landingpad() personality ptr null {
; CHECK-LABEL: @propagate_freeze_in_landingpad(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[INVOKE_BB1:%.*]]
; CHECK: invoke.bb1:
; CHECK-NEXT: [[X:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[NORMAL_RETURN:%.*]] ]
; CHECK-NEXT: [[RES0:%.*]] = invoke i32 @foo()
; CHECK-NEXT: to label [[INVOKE_BB2:%.*]] unwind label [[EXCEPTIONAL_RETURN:%.*]]
; CHECK: invoke.bb2:
; CHECK-NEXT: [[RES1:%.*]] = invoke i32 @foo()
; CHECK-NEXT: to label [[NORMAL_RETURN]] unwind label [[EXCEPTIONAL_RETURN]]
; CHECK: normal_return:
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[X]], 1
; CHECK-NEXT: br label [[INVOKE_BB1]]
; CHECK: exceptional_return:
; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ [[X]], [[INVOKE_BB1]] ], [ 0, [[INVOKE_BB2]] ]
; CHECK-NEXT: [[LANDING_PAD:%.*]] = landingpad { ptr, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: [[FR:%.*]] = freeze i32 [[PHI]]
; CHECK-NEXT: [[RES:%.*]] = shl i32 [[FR]], 1
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
br label %invoke.bb1
invoke.bb1: ; preds = %normal_return, %entry
%x = phi i32 [ 0, %entry ], [ %inc, %normal_return ]
%res0 = invoke i32 @foo()
to label %invoke.bb2 unwind label %exceptional_return
invoke.bb2: ; preds = %invoke.bb1
%res1 = invoke i32 @foo()
to label %normal_return unwind label %exceptional_return
normal_return: ; preds = %invoke.bb2
%inc = add nuw nsw i32 %x, 1
br label %invoke.bb1
exceptional_return: ; preds = %invoke.bb2, %invoke.bb1
%phi = phi i32 [ %x, %invoke.bb1 ], [ 0, %invoke.bb2 ]
%landing_pad = landingpad { ptr, i32 }
cleanup
%fr = freeze i32 %phi
%res = add i32 %fr, %phi
ret i32 %res
}
declare i32 @foo()
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