; RUN: llc < %s -O1 -mtriple thumbv7-apple-ios6 | FileCheck %s
; Just make sure no one tries to make the assumption that the normal edge of an
; invoke is never a critical edge. Previously, this code would assert.
%struct.__CFString = type opaque
declare void @bar(%struct.__CFString*, %struct.__CFString*)
define noalias i8* @foo(i8* nocapture %inRefURL) noreturn ssp personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) {
entry:
%call = tail call %struct.__CFString* @bar3()
%call2 = invoke i8* @bar2()
to label %for.cond unwind label %lpad
for.cond: ; preds = %entry, %for.cond
invoke void @bar(%struct.__CFString* undef, %struct.__CFString* null)
to label %for.cond unwind label %lpad5
lpad: ; preds = %entry
%0 = landingpad { i8*, i32 }
cleanup
%1 = extractvalue { i8*, i32 } %0, 0
%2 = extractvalue { i8*, i32 } %0, 1
br label %ehcleanup
lpad5: ; preds = %for.cond
%3 = landingpad { i8*, i32 }
cleanup
%4 = extractvalue { i8*, i32 } %3, 0
%5 = extractvalue { i8*, i32 } %3, 1
invoke void @release(i8* %call2)
to label %ehcleanup unwind label %terminate.lpad.i.i16
terminate.lpad.i.i16: ; preds = %lpad5
%6 = landingpad { i8*, i32 }
catch i8* null
tail call void @terminatev() noreturn nounwind
unreachable
ehcleanup: ; preds = %lpad5, %lpad
%exn.slot.0 = phi i8* [ %1, %lpad ], [ %4, %lpad5 ]
%ehselector.slot.0 = phi i32 [ %2, %lpad ], [ %5, %lpad5 ]
%7 = bitcast %struct.__CFString* %call to i8*
invoke void @release(i8* %7)
to label %_ZN5SmartIPK10__CFStringED1Ev.exit unwind label %terminate.lpad.i.i
terminate.lpad.i.i: ; preds = %ehcleanup
%8 = landingpad { i8*, i32 }
catch i8* null
tail call void @terminatev() noreturn nounwind
unreachable
_ZN5SmartIPK10__CFStringED1Ev.exit: ; preds = %ehcleanup
%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn.slot.0, 0
%lpad.val12 = insertvalue { i8*, i32 } %lpad.val, i32 %ehselector.slot.0, 1
resume { i8*, i32 } %lpad.val12
}
declare %struct.__CFString* @bar3()
declare i8* @bar2()
declare i32 @__gxx_personality_sj0(...)
declare void @release(i8*)
declare void @terminatev()
; Make sure that the instruction DemoteRegToStack inserts to reload
; %call.i.i.i14.i.i follows the instruction that saves the value to the stack in
; basic block %entry.do.body.i.i.i_crit_edge.
; Previously, DemoteRegToStack would insert a load instruction into the entry
; block to reload %call.i.i.i14.i.i before the phi instruction (%0) in block
; %do.body.i.i.i.
; CHECK-LABEL: __Z4foo1c:
; CHECK: bl __Znwm
; CHECK: {{.*}}@ %do.body.i.i.i.preheader
; CHECK: str r0, [sp, [[OFFSET:#[0-9]+]]]
; CHECK: {{.*}}@ %do.body.i.i.i
; CHECK: ldr [[R0:r[0-9]+]], [sp, [[OFFSET]]]
; CHECK: cbz [[R0]]
%"class.std::__1::basic_string" = type { %"class.std::__1::__compressed_pair" }
%"class.std::__1::__compressed_pair" = type { %"class.std::__1::__libcpp_compressed_pair_imp" }
%"class.std::__1::__libcpp_compressed_pair_imp" = type { %"struct.std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__rep" }
%"struct.std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__rep" = type { %union.anon }
%union.anon = type { %"struct.std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__long" }
%"struct.std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__long" = type { i32, i32, i8* }
@.str = private unnamed_addr constant [12 x i8] c"some_string\00", align 1
define void @_Z4foo1c(i8 signext %a) personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) {
entry:
%s1 = alloca %"class.std::__1::basic_string", align 4
call void @_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6__initEPKcm(%"class.std::__1::basic_string"* %s1, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i32 11)
%call.i.i.i14.i.i = invoke noalias i8* @_Znwm(i32 1024)
to label %do.body.i.i.i unwind label %lpad.body
do.body.i.i.i: ; preds = %entry, %_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i
%lsr.iv = phi i32 [ %lsr.iv.next, %_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i ], [ -1024, %entry ]
%0 = phi i8* [ %incdec.ptr.i.i.i, %_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i ], [ %call.i.i.i14.i.i, %entry ]
%new.isnull.i.i.i.i = icmp eq i8* %0, null
br i1 %new.isnull.i.i.i.i, label %_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i, label %new.notnull.i.i.i.i
new.notnull.i.i.i.i: ; preds = %do.body.i.i.i
store i8 %a, i8* %0, align 1
br label %_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i
_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i: ; preds = %new.notnull.i.i.i.i, %do.body.i.i.i
%1 = phi i8* [ null, %do.body.i.i.i ], [ %0, %new.notnull.i.i.i.i ]
%incdec.ptr.i.i.i = getelementptr inbounds i8, i8* %1, i32 1
%lsr.iv.next = add i32 %lsr.iv, 1
%cmp.i16.i.i = icmp eq i32 %lsr.iv.next, 0
br i1 %cmp.i16.i.i, label %invoke.cont, label %do.body.i.i.i
invoke.cont: ; preds = %_ZNSt3__116allocator_traitsINS_9allocatorIcEEE9constructIccEEvRS2_PT_RKT0_.exit.i.i.i
invoke void @_Z4foo2Pci(i8* %call.i.i.i14.i.i, i32 1024)
to label %invoke.cont5 unwind label %lpad2
invoke.cont5: ; preds = %invoke.cont
%cmp.i.i.i15 = icmp eq i8* %call.i.i.i14.i.i, null
br i1 %cmp.i.i.i15, label %invoke.cont6, label %_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i19
_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i19: ; preds = %invoke.cont5
call void @_ZdlPv(i8* %call.i.i.i14.i.i)
br label %invoke.cont6
invoke.cont6: ; preds = %_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i19, %invoke.cont5
%call10 = call %"class.std::__1::basic_string"* @_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED1Ev(%"class.std::__1::basic_string"* %s1)
ret void
lpad.body: ; preds = %entry
%2 = landingpad { i8*, i32 }
cleanup
%3 = extractvalue { i8*, i32 } %2, 0
%4 = extractvalue { i8*, i32 } %2, 1
br label %ehcleanup
lpad2: ; preds = %invoke.cont
%5 = landingpad { i8*, i32 }
cleanup
%6 = extractvalue { i8*, i32 } %5, 0
%7 = extractvalue { i8*, i32 } %5, 1
%cmp.i.i.i21 = icmp eq i8* %call.i.i.i14.i.i, null
br i1 %cmp.i.i.i21, label %ehcleanup, label %_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i26
_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i26: ; preds = %lpad2
call void @_ZdlPv(i8* %call.i.i.i14.i.i)
br label %ehcleanup
ehcleanup: ; preds = %_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i26, %lpad2, %lpad.body
%exn.slot.0 = phi i8* [ %3, %lpad.body ], [ %6, %lpad2 ], [ %6, %_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i26 ]
%ehselector.slot.0 = phi i32 [ %4, %lpad.body ], [ %7, %lpad2 ], [ %7, %_ZNSt3__113__vector_baseIcNS_9allocatorIcEEE5clearEv.exit.i.i.i26 ]
%call12 = invoke %"class.std::__1::basic_string"* @_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED1Ev(%"class.std::__1::basic_string"* %s1)
to label %eh.resume unwind label %terminate.lpad
eh.resume: ; preds = %ehcleanup
%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn.slot.0, 0
%lpad.val13 = insertvalue { i8*, i32 } %lpad.val, i32 %ehselector.slot.0, 1
resume { i8*, i32 } %lpad.val13
terminate.lpad: ; preds = %ehcleanup
%8 = landingpad { i8*, i32 }
catch i8* null
%9 = extractvalue { i8*, i32 } %8, 0
call void @__clang_call_terminate(i8* %9)
unreachable
}
declare void @_Z4foo2Pci(i8*, i32)
define linkonce_odr hidden void @__clang_call_terminate(i8*) {
%2 = tail call i8* @__cxa_begin_catch(i8* %0)
tail call void @_ZSt9terminatev()
unreachable
}
declare i8* @__cxa_begin_catch(i8*)
declare void @_ZSt9terminatev()
declare %"class.std::__1::basic_string"* @_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED1Ev(%"class.std::__1::basic_string"* returned)
declare void @_ZdlPv(i8*) #3
declare noalias i8* @_Znwm(i32)
declare void @_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6__initEPKcm(%"class.std::__1::basic_string"*, i8*, i32)
declare void @_Unwind_SjLj_Register({ i8*, i32, [4 x i32], i8*, i8*, [5 x i8*] }*)
declare void @_Unwind_SjLj_Unregister({ i8*, i32, [4 x i32], i8*, i8*, [5 x i8*] }*)
declare i8* @llvm.frameaddress(i32)
declare i8* @llvm.stacksave()
declare void @llvm.stackrestore(i8*)
declare i32 @llvm.eh.sjlj.setjmp(i8*)
declare i8* @llvm.eh.sjlj.lsda()
declare void @llvm.eh.sjlj.callsite(i32)
declare void @llvm.eh.sjlj.functioncontext(i8*)