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llvm-project/llvm/test/CodeGen/ARM/sjljeh-swifterror.ll

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SjLjEHPrepare: Don't reg-to-mem swifterror values swifterror llvm values model the swifterror register as memory at the LLVM IR level. ISel will perform adhoc mem-to-reg on them. swifterror values are constraint in how they can be used. Spilling them to memory is not allowed. SjLjEHPrepare tried to lower swifterror values to memory which is unecessary since the back-end will spill and reload the register as neccessary (as long as clobbering calls are marked as such which is the case here) and further leads to invalid IR because swifterror values can't be stored to memory. rdar://38164004 llvm-svn: 327521
2018-03-14 23:44:07 +08:00
; RUN: opt -sjljehprepare -verify < %s -S | FileCheck %s
SjLjEHPrepare: Fix the pass for swifterror arguments We cannot leave the identity copies 'select true, arg, undef' that this pass inserts for arguments to simplify handling of values on swifterror arguments. swifterror arguments have restrictions on their uses. rdar://30839288 llvm-svn: 297197
2017-03-08 04:29:02 +08:00
target datalayout = "e-m:o-p:32:32-f64:32:64-v64:32:64-v128:32:128-a:0:32-n32-S32"
target triple = "armv7s-apple-ios7.0"
%swift.error = type opaque
declare void @objc_msgSend() local_unnamed_addr
declare i32 @__objc_personality_v0(...)
; Make sure we don't leave a select on a swifterror argument.
SjLjEHPrepare: Don't reg-to-mem swifterror values swifterror llvm values model the swifterror register as memory at the LLVM IR level. ISel will perform adhoc mem-to-reg on them. swifterror values are constraint in how they can be used. Spilling them to memory is not allowed. SjLjEHPrepare tried to lower swifterror values to memory which is unecessary since the back-end will spill and reload the register as neccessary (as long as clobbering calls are marked as such which is the case here) and further leads to invalid IR because swifterror values can't be stored to memory. rdar://38164004 llvm-svn: 327521
2018-03-14 23:44:07 +08:00
; CHECK-LABEL: @test
SjLjEHPrepare: Fix the pass for swifterror arguments We cannot leave the identity copies 'select true, arg, undef' that this pass inserts for arguments to simplify handling of values on swifterror arguments. swifterror arguments have restrictions on their uses. rdar://30839288 llvm-svn: 297197
2017-03-08 04:29:02 +08:00
; CHECK-NOT: select true, %0
define swiftcc void @test(%swift.error** swifterror) local_unnamed_addr personality i32 (...)* @__objc_personality_v0 {
entry:
%call28.i = invoke i32 bitcast (void ()* @objc_msgSend to i32 (i8*, i8*)*)(i8* undef, i8* undef)
to label %invoke.cont.i unwind label %lpad.i
invoke.cont.i:
unreachable
lpad.i:
%1 = landingpad { i8*, i32 }
cleanup
resume { i8*, i32 } undef
}
SjLjEHPrepare: Don't reg-to-mem swifterror values swifterror llvm values model the swifterror register as memory at the LLVM IR level. ISel will perform adhoc mem-to-reg on them. swifterror values are constraint in how they can be used. Spilling them to memory is not allowed. SjLjEHPrepare tried to lower swifterror values to memory which is unecessary since the back-end will spill and reload the register as neccessary (as long as clobbering calls are marked as such which is the case here) and further leads to invalid IR because swifterror values can't be stored to memory. rdar://38164004 llvm-svn: 327521
2018-03-14 23:44:07 +08:00
%struct._objc_typeinfo = type { i8**, i8*, i64* }
@"OBJC_EHTYPE_$_NSException" = external global %struct._objc_typeinfo
; Make sure this does not crash.
; CHECK-LABEL: @swift_error_bug
; CHECK: store %swift.error* null, %swift.error** %0
define hidden swiftcc void @swift_error_bug(%swift.error** swifterror, void (i8*)** %fun, i1 %b) local_unnamed_addr #0 personality i32 (...)* @__objc_personality_v0 {
%2 = load void (i8*)*, void (i8*)** %fun, align 4
invoke void %2(i8* null) #1
to label %tryBlock.exit unwind label %3, !clang.arc.no_objc_arc_exceptions !1
; <label>:3:
%4 = landingpad { i8*, i32 }
catch %struct._objc_typeinfo* @"OBJC_EHTYPE_$_NSException"
br label %tryBlock.exit
tryBlock.exit:
br i1 %b, label %5, label %_T0ypMa.exit.i.i
_T0ypMa.exit.i.i:
store %swift.error* null, %swift.error** %0, align 4
ret void
; <label>:5:
ret void
}
!1 = !{}