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llvm-project/llvm/test/CodeGen/XCore/exception.ll

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XCore target: implement exception handling llvm-svn: 194564
2013-11-13 18:19:31 +08:00
; RUN: llc < %s -march=xcore | FileCheck %s
declare void @g()
declare i32 @__gxx_personality_v0(...)
declare i32 @llvm.eh.typeid.for(i8*) nounwind readnone
declare i8* @__cxa_begin_catch(i8*)
declare void @__cxa_end_catch()
declare i8* @__cxa_allocate_exception(i32)
declare void @__cxa_throw(i8*, i8*, i8*)
@_ZTIi = external constant i8*
@_ZTId = external constant i8*
; CHECK-LABEL: fn_typeid:
; CHECK: .cfi_startproc
; CHECK: mkmsk r0, 1
; CHECK: retsp 0
; CHECK: .cfi_endproc
define i32 @fn_typeid() {
entry:
%0 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) nounwind
ret i32 %0
}
; CHECK-LABEL: fn_throw
; CHECK: .cfi_startproc
; CHECK: entsp 1
; CHECK: .cfi_def_cfa_offset 4
; CHECK: .cfi_offset 15, 0
; CHECK: ldc r0, 4
; CHECK: bl __cxa_allocate_exception
XCore target: fix const section handling Xcore target ABI requires const data that is externally visible to be handled differently if it has C-language linkage rather than C++ language linkage. Clang now emits ".cp.rodata" section information. All other externally visible constant data will be placed in the DP section. llvm-svn: 201144
2014-02-11 18:36:26 +08:00
; CHECK: ldaw r1, dp[_ZTIi]
XCore target: implement exception handling llvm-svn: 194564
2013-11-13 18:19:31 +08:00
; CHECK: ldc r2, 0
; CHECK: bl __cxa_throw
define void @fn_throw() {
entry:
%0 = call i8* @__cxa_allocate_exception(i32 4) nounwind
call void @__cxa_throw(i8* %0, i8* bitcast (i8** @_ZTIi to i8*), i8* null) noreturn
unreachable
}
Centralize handling of the eh_begin and eh_end labels. This removes a bit of duplicated code and more importantly, remembers the labels so that they don't need to be looked up by name. This in turn allows for any name to be used and avoids a crash if the name we wanted was already taken. llvm-svn: 230772
2015-02-28 02:18:39 +08:00
; CHECK-LABEL: fn_catch:
; CHECK-NEXT: [[START:.L[a-zA-Z0-9_]+]]
XCore target: implement exception handling llvm-svn: 194564
2013-11-13 18:19:31 +08:00
; CHECK: .cfi_startproc
; CHECK: .cfi_personality 0, __gxx_personality_v0
; CHECK: .cfi_lsda 0, [[LSDA:.L[a-zA-Z0-9_]+]]
; CHECK: entsp 4
; CHECK: .cfi_def_cfa_offset 16
; CHECK: .cfi_offset 15, 0
Move the personality function from LandingPadInst to Function The personality routine currently lives in the LandingPadInst. This isn't desirable because: - All LandingPadInsts in the same function must have the same personality routine. This means that each LandingPadInst beyond the first has an operand which produces no additional information. - There is ongoing work to introduce EH IR constructs other than LandingPadInst. Moving the personality routine off of any one particular Instruction and onto the parent function seems a lot better than have N different places a personality function can sneak onto an exceptional function. Differential Revision: http://reviews.llvm.org/D10429 llvm-svn: 239940
2015-06-18 04:52:32 +08:00
define void @fn_catch() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
XCore target: implement exception handling llvm-svn: 194564
2013-11-13 18:19:31 +08:00
entry:
; N.B. we alloc no variables, hence force compiler to spill
; CHECK: stw r4, sp[3]
; CHECK: .cfi_offset 4, -4
; CHECK: stw r5, sp[2]
; CHECK: .cfi_offset 5, -8
; CHECK: stw r6, sp[1]
; CHECK: .cfi_offset 6, -12
; CHECK: [[PRE_G:.L[a-zA-Z0-9_]+]]
; CHECK: bl g
; CHECK: [[POST_G:.L[a-zA-Z0-9_]+]]
; CHECK: [[RETURN:.L[a-zA-Z0-9_]+]]
; CHECK: ldw r6, sp[1]
; CHECK: ldw r5, sp[2]
; CHECK: ldw r4, sp[3]
; CHECK: retsp 4
invoke void @g() to label %cont unwind label %lpad
cont:
ret void
; CHECK: {{.L[a-zA-Z0-9_]+}}
; CHECK: [[LANDING:.L[a-zA-Z0-9_]+]]
; CHECK: mov r5, r1
; CHECK: mov r4, r0
; CHECK: bl __cxa_begin_catch
; CHECK: ldw r6, r0[0]
; CHECK: bl __cxa_end_catch
lpad:
Move the personality function from LandingPadInst to Function The personality routine currently lives in the LandingPadInst. This isn't desirable because: - All LandingPadInsts in the same function must have the same personality routine. This means that each LandingPadInst beyond the first has an operand which produces no additional information. - There is ongoing work to introduce EH IR constructs other than LandingPadInst. Moving the personality routine off of any one particular Instruction and onto the parent function seems a lot better than have N different places a personality function can sneak onto an exceptional function. Differential Revision: http://reviews.llvm.org/D10429 llvm-svn: 239940
2015-06-18 04:52:32 +08:00
%0 = landingpad { i8*, i32 }
Reland r229944: EH: Prune unreachable resume instructions during Dwarf EH preparation Fix the double-deletion of AnalysisResolver when delegating through to Dwarf EH preparation by creating one from scratch. Hopefully the new pass manager simplifies this. This reverts commit r229952. llvm-svn: 231719
2015-03-10 06:45:16 +08:00
cleanup
XCore target: implement exception handling llvm-svn: 194564
2013-11-13 18:19:31 +08:00
catch i8* bitcast (i8** @_ZTIi to i8*)
catch i8* bitcast (i8** @_ZTId to i8*)
%1 = extractvalue { i8*, i32 } %0, 0
%2 = extractvalue { i8*, i32 } %0, 1
%3 = call i8* @__cxa_begin_catch(i8* %1) nounwind
%4 = bitcast i8* %3 to i32*
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%5 = load i32, i32* %4
XCore target: implement exception handling llvm-svn: 194564
2013-11-13 18:19:31 +08:00
call void @__cxa_end_catch() nounwind
; CHECK: eq r0, r6, r5
; CHECK: bf r0, [[RETURN]]
; CHECK: mov r0, r4
; CHECK: bl _Unwind_Resume
; CHECK: [[END:.L[a-zA-Z0-9_]+]]
Centralize handling of the eh_begin and eh_end labels. This removes a bit of duplicated code and more importantly, remembers the labels so that they don't need to be looked up by name. This in turn allows for any name to be used and avoids a crash if the name we wanted was already taken. llvm-svn: 230772
2015-02-28 02:18:39 +08:00
; CHECK: .cfi_endproc
XCore target: implement exception handling llvm-svn: 194564
2013-11-13 18:19:31 +08:00
%6 = icmp eq i32 %5, %2
br i1 %6, label %Resume, label %Exit
Resume:
resume { i8*, i32 } %0
Exit:
ret void
}
; CHECK: [[LSDA]]:
; CHECK: .byte 255
; CHECK: .byte 0
; CHECK: .asciiz
; CHECK: .byte 3
; CHECK: .byte 26
Fix a bit of confusion about .set and produce more readable assembly. Every target we support has support for assembly that looks like a = b - c .long a What is special about MachO is that the above combination suppresses the production of a relocation. With this change we avoid producing the intermediary labels when they don't add any value. llvm-svn: 220256
2014-10-21 09:17:30 +08:00
; CHECK: .long [[PRE_G]]-[[START]]
; CHECK: .long [[POST_G]]-[[PRE_G]]
; CHECK: .long [[LANDING]]-[[START]]
Reland r229944: EH: Prune unreachable resume instructions during Dwarf EH preparation Fix the double-deletion of AnalysisResolver when delegating through to Dwarf EH preparation by creating one from scratch. Hopefully the new pass manager simplifies this. This reverts commit r229952. llvm-svn: 231719
2015-03-10 06:45:16 +08:00
; CHECK: .byte 5
Fix a bit of confusion about .set and produce more readable assembly. Every target we support has support for assembly that looks like a = b - c .long a What is special about MachO is that the above combination suppresses the production of a relocation. With this change we avoid producing the intermediary labels when they don't add any value. llvm-svn: 220256
2014-10-21 09:17:30 +08:00
; CHECK: .long [[POST_G]]-[[START]]
; CHECK: .long [[END]]-[[POST_G]]
XCore target: implement exception handling llvm-svn: 194564
2013-11-13 18:19:31 +08:00
; CHECK: .long 0
; CHECK: .byte 0
Revert r229944: EH: Prune unreachable resume instructions during Dwarf EH preparation This doesn't pass 'ninja check-llvm' for me. Lots of tests, including the ones updated, fail with crashes and other explosions. llvm-svn: 229952
2015-02-20 10:15:36 +08:00
; CHECK: .byte 0
Reland r229944: EH: Prune unreachable resume instructions during Dwarf EH preparation Fix the double-deletion of AnalysisResolver when delegating through to Dwarf EH preparation by creating one from scratch. Hopefully the new pass manager simplifies this. This reverts commit r229952. llvm-svn: 231719
2015-03-10 06:45:16 +08:00
; CHECK: .byte 1
; CHECK: .byte 125
XCore target: implement exception handling llvm-svn: 194564
2013-11-13 18:19:31 +08:00
; CHECK: .byte 2
; CHECK: .byte 125
; CHECK: .long _ZTIi
; CHECK: .long _ZTId