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[LLD] [COFF] Fix deducing the machine type from LTO objects for ARM/Thumb (#71335)

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In practice, all the Windows ARMNT IR objects show the architecture type
Thumb, not ARM.

Most other switch cases for architecture in lld/COFF check for and treat
`arm` and `thumb` equally.
This commit is contained in:
Martin Storsjö 2023-11-07 12:00:31 +02:00 committed by GitHub
parent 05ed92127c
commit e8961969ec
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2 changed files with 20 additions and 0 deletions
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1
lld/COFF/InputFiles.cpp
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@ -1090,6 +1090,7 @@ MachineTypes BitcodeFile::getMachineType() {
case Triple::x86:
return I386;
case Triple::arm:
case Triple::thumb:
return ARMNT;
case Triple::aarch64:
return ARM64;

19
lld/test/COFF/lto-arm.ll Normal file
View File

@ -0,0 +1,19 @@
; REQUIRES: arm
; RUN: llvm-as %s -o %t.obj
; RUN: lld-link /entry:entry %t.obj /out:%t.exe /subsystem:console 2>&1 | FileCheck %s --check-prefix=ERR --allow-empty
; RUN: llvm-readobj %t.exe | FileCheck %s
; ERR-NOT: /machine is not specified
; CHECK: Format: COFF-ARM{{$}}
; CHECK: Arch: thumb
target datalayout = "e-m:w-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbv7-w64-windows-gnu"
define dso_local arm_aapcs_vfpcc void @entry() {
entry:
ret void
}