[ARM/FDPIC v3 07/21] [ARM] FDPIC: Avoid saving/restoring r9 on stack since it is RO

[Christophe Lyon]

2018-XX-XX  Christophe Lyon  <christophe.l...@st.com>
        Mickaël Guêné <mickael.gu...@st.com>

        gcc/
        * config/arm/arm.c (arm_compute_save_reg0_reg12_mask): Handle
        FDPIC.
        (thumb1_compute_save_core_reg_mask): Likewise.

diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 92ae24b..a6dce36 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -19470,7 +19470,7 @@ arm_compute_save_reg0_reg12_mask (void)
 
       /* Also save the pic base register if necessary.  */
       if (flag_pic
-         && !TARGET_SINGLE_PIC_BASE
+         && !TARGET_SINGLE_PIC_BASE && !TARGET_FDPIC
          && arm_pic_register != INVALID_REGNUM
          && crtl->uses_pic_offset_table)
        save_reg_mask |= 1 << PIC_OFFSET_TABLE_REGNUM;
@@ -19504,7 +19504,7 @@ arm_compute_save_reg0_reg12_mask (void)
       /* If we aren't loading the PIC register,
         don't stack it even though it may be live.  */
       if (flag_pic
-         && !TARGET_SINGLE_PIC_BASE
+         && !TARGET_SINGLE_PIC_BASE && !TARGET_FDPIC
          && arm_pic_register != INVALID_REGNUM
          && (df_regs_ever_live_p (PIC_OFFSET_TABLE_REGNUM)
              || crtl->uses_pic_offset_table))
-- 
2.6.3