2461cdb417
Once the default for SimplifyCFG flips, we can no longer pass nullptr instead of DomTree to SimplifyCFG, so we need to propagate it here. We don't strictly need to actually preserve DomTree in DwarfEHPrepare, but we might as well do it, since it's trivial.
59 lines
2.8 KiB
LLVM
59 lines
2.8 KiB
LLVM
; RUN: llc -simplifycfg-require-and-preserve-domtree=1 < %s -mtriple=x86_64 | FileCheck %s --check-prefixes=CHECK,NORMAL
|
|
; RUN: llc -simplifycfg-require-and-preserve-domtree=1 < %s -mtriple=x86_64 -unique-section-names=false | FileCheck %s --check-prefixes=CHECK,NOUNIQUE
|
|
; RUN: llc -simplifycfg-require-and-preserve-domtree=1 < %s -mtriple=x86_64 -function-sections | FileCheck %s --check-prefixes=CHECK,SEP
|
|
; RUN: llc -simplifycfg-require-and-preserve-domtree=1 < %s -mtriple=x86_64 -function-sections -unique-section-names=false | FileCheck %s --check-prefixes=CHECK,SEP_NOUNIQUE
|
|
|
|
;; Don't use `,unique` if GNU as<2.35.
|
|
; RUN: llc -simplifycfg-require-and-preserve-domtree=1 < %s -mtriple=x86_64 -function-sections -unique-section-names=false -no-integrated-as | FileCheck %s --check-prefixes=CHECK,SEP_NOUNIQUE_GAS
|
|
|
|
@_ZTIi = external constant i8*
|
|
|
|
;; If the function is in a comdat group, the generated .gcc_except_table should
|
|
;; be placed in the same group, so that .gcc_except_table can be discarded if
|
|
;; the comdat is not prevailing. If -funique-section-names, append the function name.
|
|
$group = comdat any
|
|
define i32 @group() uwtable comdat personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
|
|
; CHECK-LABEL: group:
|
|
; CHECK: .cfi_endproc
|
|
; NORMAL-NEXT: .section .gcc_except_table.group,"aG",@progbits,group,comdat{{$}}
|
|
; NOUNIQUE-NEXT: .section .gcc_except_table,"aG",@progbits,group,comdat{{$}}
|
|
; SEP-NEXT: .section .gcc_except_table.group,"aG",@progbits,group,comdat{{$}}
|
|
; SEP_NOUNIQUE-NEXT: .section .gcc_except_table,"aG",@progbits,group,comdat,unique,2
|
|
; SEP_NOUNIQUE_GAS-NEXT: .section .gcc_except_table,"aG",@progbits,group,comdat{{$}}
|
|
entry:
|
|
invoke void @ext() to label %try.cont unwind label %lpad
|
|
lpad:
|
|
%0 = landingpad { i8*, i32 } catch i8* bitcast (i8** @_ZTIi to i8*)
|
|
br label %eh.resume
|
|
try.cont:
|
|
ret i32 0
|
|
eh.resume:
|
|
resume { i8*, i32 } %0
|
|
}
|
|
|
|
;; If the function is not in a comdat group, but function sections is enabled,
|
|
;; use a separate section by either using a unique ID (integrated assembler) or
|
|
;; a suffix (GNU as<2.35).
|
|
define i32 @foo() uwtable personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
|
|
; CHECK-LABEL: foo:
|
|
; CHECK: .cfi_endproc
|
|
; NORMAL-NEXT: .section .gcc_except_table,"a",@progbits{{$}}
|
|
; NOUNIQUE-NEXT: .section .gcc_except_table,"a",@progbits{{$}}
|
|
; SEP-NEXT: .section .gcc_except_table.foo,"a",@progbits{{$}}
|
|
; SEP_NOUNIQUE-NEXT: .section .gcc_except_table,"a",@progbits,unique,4
|
|
; SEP_NOUNIQUE_GAS-NEXT: .section .gcc_except_table,"a",@progbits{{$}}
|
|
entry:
|
|
invoke void @ext() to label %try.cont unwind label %lpad
|
|
lpad:
|
|
%0 = landingpad { i8*, i32 } catch i8* bitcast (i8** @_ZTIi to i8*)
|
|
br label %eh.resume
|
|
try.cont:
|
|
ret i32 0
|
|
eh.resume:
|
|
resume { i8*, i32 } %0
|
|
}
|
|
|
|
declare void @ext()
|
|
|
|
declare i32 @__gxx_personality_v0(...)
|