; Check that when all exception handling blocks are cold, they get grouped with the cold bbs.
; RUN: echo '!main' > %t
; RUN: echo '!!0' >> %t
; RUN: llc -function-sections -basic-block-sections=%t -mtriple x86_64-pc-linux-gnu < %s | FileCheck %s
@_ZTIi = external constant ptr
define i32 @main() uwtable optsize ssp personality ptr @__gxx_personality_v0 {
; Verify that each basic block section gets its own LSDA exception symbol.
;
; CHECK-LABEL: main:
; CHECK-NEXT: .Lfunc_begin0:
; CHECK-NEXT: .cfi_startproc
; PersonalityEncoding = dwarf::DW_EH_PE_udata4
; CHECK-NEXT: .cfi_personality 3, __gxx_personality_v0
; LSDAEncoding = dwarf::DW_EH_PE_udata4
; CHECK-NEXT: .cfi_lsda 3, .Lexception0
; CHECK-LABEL: .Ltmp0:
; CHECK-LABEL: .Ltmp1:
; CHECK-NOT: .cfi_lsda
; CHECK-LABEL: main.cold:
; CHECK-NEXT: .cfi_startproc
; CHECK-NEXT: .cfi_personality 3, __gxx_personality_v0
; CHECK-NEXT: .cfi_lsda 3, .Lexception1
; CHECK-LABEL: .Ltmp2:
; CHECK-LABEL: .LBB_END0_2:
; CHECK-NOT: .cfi_lsda
entry:
invoke void @_Z1fv() optsize
to label %try.cont unwind label %lpad
lpad:
%0 = landingpad { ptr, i32 }
cleanup
catch ptr @_ZTIi
br label %eh.resume
try.cont:
ret i32 0
eh.resume:
resume { ptr, i32 } %0
}
declare void @_Z1fv() optsize
declare i32 @__gxx_personality_v0(...)
; Verify that the exception table gets split across the two basic block sections.
;
; CHECK: .section .gcc_except_table
; CHECK-NEXT: .p2align 2
; CHECK-NEXT: GCC_except_table0:
; CHECK-NEXT: .Lexception0:
; CHECK-NEXT: .byte 0 # @LPStart Encoding = absptr
; CHECK-NEXT: .quad main.cold
; CHECK-NEXT: .byte 3 # @TType Encoding = udata4
; CHECK-NEXT: .uleb128 .Lttbase0-.Lttbaseref0
; CHECK-NEXT: .Lttbaseref0:
; CHECK-NEXT: .byte 1 # Call site Encoding = uleb128
; CHECK-NEXT: .uleb128 .Laction_table_base0-.Lcst_begin0
; CHECK-NEXT: .Lcst_begin0:
; CHECK-NEXT: .uleb128 .Ltmp0-.Lfunc_begin0 # >> Call Site 1 <<
; CHECK-NEXT: .uleb128 .Ltmp1-.Ltmp0 # Call between .Ltmp0 and .Ltmp1
; CHECK-NEXT: .uleb128 .Ltmp2-main.cold # jumps to .Ltmp2
; CHECK-NEXT: .byte 3 # On action: 2
; CHECK-NEXT: .p2align 2
; CHECK-NEXT: .Lexception1:
; CHECK-NEXT: .byte 0 # @LPStart Encoding = absptr
; CHECK-NEXT: .quad main.cold
; CHECK-NEXT: .byte 3 # @TType Encoding = udata4
; CHECK-NEXT: .uleb128 .Lttbase0-.Lttbaseref1
; CHECK-NEXT: .Lttbaseref1:
; CHECK-NEXT: .byte 1 # Call site Encoding = uleb128
; CHECK-NEXT: .uleb128 .Laction_table_base0-.Lcst_begin1
; CHECK-NEXT: .Lcst_begin1:
; CHECK-NEXT: .uleb128 main.cold-main.cold # >> Call Site 2 <<
; CHECK-NEXT: .uleb128 .LBB_END0_2-main.cold # Call between main.cold and .LBB_END0_2
; CHECK-NEXT: .byte 0 # has no landing pad
; CHECK-NEXT: .byte 0 # On action: cleanup
; CHECK-NEXT: .Laction_table_base0:
; CHECK-NEXT: .byte 0 # >> Action Record 1 <<
; CHECK-NEXT: # Cleanup
; CHECK-NEXT: .byte 0 # No further actions
; CHECK-NEXT: .byte 1 # >> Action Record 2 <<
; CHECK-NEXT: # Catch TypeInfo 1
; CHECK-NEXT: .byte 125 # Continue to action 1
; CHECK-NEXT: .p2align 2
; CHECK-NEXT: # >> Catch TypeInfos <<
; CHECK-NEXT: .long _ZTIi # TypeInfo 1
; CHECK-NEXT: .Lttbase0:
; CHECK-NEXT: .p2align 2
; CHECK-NEXT: # -- End function
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