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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -sink-common-insts -S < %s | FileCheck %s
; Test that we tail merge resume blocks and phi operands properly.
declare void @maybe_throws()
declare void @foo()
declare void @bar()
declare void @baz()
declare void @qux()
declare void @quux()
declare void @quuz()
declare void @common()
define void @merge_simple(i1 %cond) personality ptr @__gxx_personality_v0 {
; CHECK-LABEL: @merge_simple(
; CHECK-NEXT: invoke void @maybe_throws()
; CHECK-NEXT: to label [[INVOKE_CONT:%.*]] unwind label [[LPAD:%.*]]
; CHECK: invoke.cont:
; CHECK-NEXT: invoke void @maybe_throws()
; CHECK-NEXT: to label [[INVOKE_CONT2:%.*]] unwind label [[LPAD2:%.*]]
; CHECK: invoke.cont2:
; CHECK-NEXT: invoke void @maybe_throws()
; CHECK-NEXT: to label [[INVOKE_CONT3:%.*]] unwind label [[LPAD3:%.*]]
; CHECK: invoke.cont3:
; CHECK-NEXT: ret void
; CHECK: lpad:
; CHECK-NEXT: [[LP:%.*]] = landingpad { ptr, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: call void @foo()
; CHECK-NEXT: br i1 [[COND:%.*]], label [[RESUME0:%.*]], label [[RESUME1:%.*]]
; CHECK: lpad2:
; CHECK-NEXT: [[LP2:%.*]] = landingpad { ptr, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: br label [[RESUME2:%.*]]
; CHECK: lpad3:
; CHECK-NEXT: [[LP3:%.*]] = landingpad { ptr, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: call void @baz()
; CHECK-NEXT: br label [[RESUME2]]
; CHECK: common.resume:
; CHECK-NEXT: [[COMMON_RESUME_OP:%.*]] = phi { ptr, i32 } [ [[LP]], [[RESUME0]] ], [ [[LP]], [[RESUME1]] ], [ [[SEMICOMMON_LP:%.*]], [[RESUME2]] ]
; CHECK-NEXT: call void @common()
; CHECK-NEXT: resume { ptr, i32 } [[COMMON_RESUME_OP]]
; CHECK: resume0:
; CHECK-NEXT: call void @qux()
; CHECK-NEXT: br label [[COMMON_RESUME:%.*]]
; CHECK: resume1:
; CHECK-NEXT: call void @quux()
; CHECK-NEXT: br label [[COMMON_RESUME]]
; CHECK: resume2:
; CHECK-NEXT: [[SEMICOMMON_LP]] = phi { ptr, i32 } [ [[LP2]], [[LPAD2]] ], [ [[LP3]], [[LPAD3]] ]
; CHECK-NEXT: call void @quuz()
; CHECK-NEXT: br label [[COMMON_RESUME]]
;
invoke void @maybe_throws() to label %invoke.cont unwind label %lpad
invoke.cont:
invoke void @maybe_throws() to label %invoke.cont2 unwind label %lpad2
invoke.cont2:
invoke void @maybe_throws() to label %invoke.cont3 unwind label %lpad3
invoke.cont3:
ret void
lpad:
%lp = landingpad { ptr, i32 } cleanup
call void @foo()
br i1 %cond, label %resume0, label %resume1
lpad2:
%lp2 = landingpad { ptr, i32 } cleanup
call void @bar()
br label %resume2
lpad3:
%lp3 = landingpad { ptr, i32 } cleanup
call void @baz()
br label %resume2
resume0:
call void @qux()
call void @common()
resume { ptr, i32 } %lp
resume1:
call void @quux()
call void @common()
resume { ptr, i32 } %lp
resume2:
%semicommon.lp = phi { ptr, i32 } [ %lp2, %lpad2 ], [ %lp3, %lpad3 ]
call void @quuz()
call void @common()
resume { ptr, i32 } %semicommon.lp
}
declare dso_local i32 @__gxx_personality_v0(...)
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