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[SystemZ] Update non-pic DWARF encodings 

As pointed out by Rafael Espindola, we should match the DWARF encodings
produced by GCC in both pic and non-pic modes.  This was not the case
for the non-pic case.

This patch changes all DWARF encodings to DW_EH_PE_absptr for the
non-pic case, just like GCC does.  The test case is updated to check
for both variants.

llvm-svn: 181222
This commit is contained in:
Ulrich Weigand 2013-05-06 17:28:30 +00:00
parent 10414112d1
commit e7c6dfeb4b
2 changed files with 18 additions and 9 deletions
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19
llvm/lib/MC/MCObjectFileInfo.cpp
View File

@ -298,12 +298,19 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
} else if (T.getArch() == Triple::systemz) {
// All currently-defined code models guarantee that 4-byte PC-relative
// values will be in range.
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
dwarf::DW_EH_PE_sdata4;
LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
dwarf::DW_EH_PE_sdata4;
if (RelocM == Reloc::PIC_) {
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
dwarf::DW_EH_PE_sdata4;
LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
dwarf::DW_EH_PE_sdata4;
} else {
PersonalityEncoding = dwarf::DW_EH_PE_absptr;
LSDAEncoding = dwarf::DW_EH_PE_absptr;
FDEEncoding = dwarf::DW_EH_PE_absptr;
TTypeEncoding = dwarf::DW_EH_PE_absptr;
}
}
// Solaris requires different flags for .eh_frame to seemingly every other

8
llvm/test/DebugInfo/SystemZ/eh_frame_personality.ll
View File

@ -1,6 +1,6 @@
; RUN: llc < %s -verify-machineinstrs -mtriple=s390x-linux-gnu | FileCheck -check-prefix=CHECK-FUNC %s
; RUN: llc < %s -verify-machineinstrs -mtriple=s390x-linux-gnu | FileCheck -check-prefix=CHECK-ET %s
; RUN: llc < %s -verify-machineinstrs -mtriple=s390x-linux-gnu | FileCheck -check-prefix=CHECK-REF %s
; RUN: llc < %s -verify-machineinstrs -mtriple=s390x-linux-gnu -relocation-model=pic | FileCheck -check-prefix=CHECK-REF %s
declare i32 @__gxx_personality_v0(...)
@ -18,8 +18,8 @@ clean:
; CHECK-FUNC: foo:
; CHECK-FUNC: .cfi_startproc
; CHECK-FUNC: .cfi_personality 155, DW.ref.__gxx_personality_v0
; CHECK-FUNC: .cfi_lsda 27, .Lexception0
; CHECK-FUNC: .cfi_personality 0, __gxx_personality_v0
; CHECK-FUNC: .cfi_lsda 0, .Lexception0
; CHECK-FUNC: stmg %r14, %r15, 112(%r15)
; CHECK-FUNC: .cfi_offset %r14, -48
; CHECK-FUNC: .cfi_offset %r15, -40
@ -33,6 +33,8 @@ clean:
; CHECK-ET-NEXT: GCC_except_table0:
; CHECK-ET-NEXT: .Lexception0:
;
; CHECK-REF: .cfi_personality 155, DW.ref.__gxx_personality_v0
; CHECK-REF: .cfi_lsda 27, .Lexception0
; CHECK-REF: .hidden DW.ref.__gxx_personality_v0
; CHECK-REF: .weak DW.ref.__gxx_personality_v0
; CHECK-REF: .section .data.DW.ref.__gxx_personality_v0,"aGw",@progbits,DW.ref.__gxx_personality_v0,comdat