[PATCH v1 6/9] aarch64: Use symbols without offset to prevent relocation issues

[Evgeny Karpov]

aarch64.cc has been updated to prevent emitting "symbol + offset"
for SYMBOL_SMALL_ABSOLUTE for the PECOFF target. "symbol + offset"
cannot be used in relocations for aarch64-w64-mingw32 due to
relocation requirements.
Instead, it will adjust the address by an offset with the
"add" instruction.

gcc/ChangeLog:

        * config/aarch64/aarch64.cc (aarch64_load_symref_and_add_offset):
        New.
        (aarch64_expand_mov_immediate): Use
        aarch64_load_symref_and_add_offset.
---
 gcc/config/aarch64/aarch64.cc | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index 7865484860b..1d88814f28d 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -4887,6 +4887,17 @@ aarch64_split_add_offset (scalar_int_mode mode, rtx 
dest, rtx src,
                      temp1, temp2, 0, false);
 }
 
+static void
+aarch64_load_symref_and_add_offset (scalar_int_mode mode, rtx dest, rtx src,
+                   poly_int64 offset)
+{
+  gcc_assert (can_create_pseudo_p ());
+  src = aarch64_force_temporary (mode, dest, src);
+  aarch64_add_offset (mode, dest, src, offset,
+                     NULL_RTX, NULL_RTX, 0, false);
+}
+
+
 /* Add DELTA to the stack pointer, marking the instructions frame-related.
    TEMP1 is available as a temporary if nonnull.  FORCE_ISA_MODE is as
    for aarch64_add_offset.  EMIT_MOVE_IMM is false if TEMP1 already
@@ -6054,10 +6065,8 @@ aarch64_expand_mov_immediate (rtx dest, rtx imm)
        case SYMBOL_TINY_TLSIE:
          if (const_offset != 0)
            {
-             gcc_assert(can_create_pseudo_p ());
-             base = aarch64_force_temporary (int_mode, dest, base);
-             aarch64_add_offset (int_mode, dest, base, const_offset,
-                                 NULL_RTX, NULL_RTX, 0, false);
+             aarch64_load_symref_and_add_offset (int_mode, dest, base,
+                                                 const_offset);
              return;
            }
          /* FALLTHRU */
@@ -6068,6 +6077,13 @@ aarch64_expand_mov_immediate (rtx dest, rtx imm)
        case SYMBOL_TLSLE24:
        case SYMBOL_TLSLE32:
        case SYMBOL_TLSLE48:
+         if (TARGET_PECOFF && const_offset != 0)
+           {
+             aarch64_load_symref_and_add_offset (int_mode, dest, base,
+                                                 const_offset);
+             return;
+           }
+
          aarch64_load_symref_appropriately (dest, imm, sty);
          return;
 
-- 
2.34.1