Fix LLVM error on armel

GHC 8.10 fails to build on armel with the following error:
   LLVM ERROR: unable to allocate function argument #8
   PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.
   Stack dump:
   0.  Program arguments: llc-12 -O2 -enable-tbaa -relocation-model=pic -mcpu=arm7tdmi -mattr=+soft-float,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-fp16,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fullfp16,-fp64,-d32,-neon,-crypto,-dotprod,-fp16fml,-bf16,-mve,-mve.fp,-fpregs,+strict-align /tmp/ghc5537_0/ghc_6.bc -o /tmp/ghc5537_0/ghc_7.lm_s
   1.  Running pass 'Function Pass Manager' on module '/tmp/ghc20177_0/ghc_6.bc'.
   2.  Running pass 'ARM Instruction Selection' on function '@"stg_gc_f1$def"'
   `llc-12' failed in phase `LLVM Compiler'. (Exit code: -6)
   make[3]: *** [rts/ghc.mk:325: rts/dist/build/HeapStackCheck.o] Error 1

 Surprisingly, reverting commit 4540bbe2811e860f35de6e67ab2f0040592fd3a5 fixes
 thie error.
Author: Ilias Tsitsimpis <iliastsi@debian.org>
Bug: https://gitlab.haskell.org/ghc/ghc/-/issues/20285

Gbp-Pq: Name fix-llvm-armel

diff --git a/compiler/CodeGen.Platform.h b/compiler/CodeGen.Platform.h
index a216d266dd6a9f888d7cfa30350873f5115b25ec..db7b67e1da8b797d33e559289eecf08384d78c71 100644 (file)
--- a/compiler/CodeGen.Platform.h
+++ b/compiler/CodeGen.Platform.h
@@ -6,6 +6,7 @@ import GHC.Utils.Panic.Plain
 #endif
 import GHC.Platform.Reg
 
+#include "ghcautoconf.h"
 #include "MachRegs.h"
 
 #if defined(MACHREGS_i386) || defined(MACHREGS_x86_64)