84602066a6
Whenever LPStartEncoding was different from DW_EH_PE_omit, we used to miscalculate LPStart. As a result, landing pads were assigned wrong addresses. Fix that.
92 lines
2.7 KiB
ArmAsm
92 lines
2.7 KiB
ArmAsm
# RUN: %clangxx %cflags -no-pie %s -o %t.exe -Wl,-q
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# RUN: llvm-bolt %t.exe -o %t.exe.bolt
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# RUN: %t.exe.bolt
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# REQUIRES: system-linux
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## Test that BOLT properly handles LPStart when LPStartEncoding is different
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## from DW_EH_PE_omit.
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# The test case compiled with -O1 from:
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#
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# int main() {
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# try {
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# throw 42;
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# } catch (...) {
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# return 0;
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# }
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# return 1;
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# }
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#
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# The exception table was modified with udata4 LPStartEncoding and sdata4
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# CallSiteEncoding.
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.text
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.globl main # -- Begin function main
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.p2align 4, 0x90
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.type main,@function
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main: # @main
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.Lfunc_begin0:
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.cfi_startproc
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.cfi_personality 3, __gxx_personality_v0
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.cfi_lsda 3, .Lexception0
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# %bb.0:
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pushq %rax
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.cfi_def_cfa_offset 16
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movl $4, %edi
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callq __cxa_allocate_exception
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movl $42, (%rax)
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.Ltmp0:
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movl $_ZTIi, %esi
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movq %rax, %rdi
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xorl %edx, %edx
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callq __cxa_throw
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.Ltmp1:
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# %bb.1:
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.LBB0_2:
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.Ltmp2:
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movq %rax, %rdi
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callq __cxa_begin_catch
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callq __cxa_end_catch
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xorl %eax, %eax
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popq %rcx
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.cfi_def_cfa_offset 8
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retq
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.Lfunc_end0:
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.size main, .Lfunc_end0-main
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.cfi_endproc
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.section .gcc_except_table,"a",@progbits
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.p2align 2
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GCC_except_table0:
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.Lexception0:
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.byte 3 # @LPStart Encoding = udata4
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.long 0
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.byte 3 # @TType Encoding = udata4
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.uleb128 .Lttbase0-.Lttbaseref0
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.Lttbaseref0:
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.byte 11 # Call site Encoding = sdata4
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.uleb128 .Lcst_end0-.Lcst_begin0
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.Lcst_begin0:
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.long .Lfunc_begin0-.Lfunc_begin0 # >> Call Site 1 <<
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.long .Ltmp0-.Lfunc_begin0 # Call between .Lfunc_begin0 and .Ltmp0
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.long 0 # has no landing pad
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.byte 0 # On action: cleanup
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.long .Ltmp0-.Lfunc_begin0 # >> Call Site 2 <<
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.long .Ltmp1-.Ltmp0 # Call between .Ltmp0 and .Ltmp1
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.long .Ltmp2 # jumps to .Ltmp2
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.byte 1 # On action: 1
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.long .Ltmp1-.Lfunc_begin0 # >> Call Site 3 <<
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.long .Lfunc_end0-.Ltmp1 # Call between .Ltmp1 and .Lfunc_end0
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.long 0 # has no landing pad
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.byte 0 # On action: cleanup
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.Lcst_end0:
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.byte 1 # >> Action Record 1 <<
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# Catch TypeInfo 1
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.byte 0 # No further actions
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.p2align 2
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# >> Catch TypeInfos <<
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.long 0 # TypeInfo 1
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.Lttbase0:
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.p2align 2
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# -- End function
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