[RS6000] Use gen_hard_reg_clobber in rs6000.c

I noticed when looking at PR88311 that rs6000_call_sysv should be
using gen_hard_reg_clobber (as the sysv call insns did prior to
introducing rs6000_call_sysv).  This patch fixes that minor
regression, and other like places in rs6000.c.

	* config/rs6000/rs6000.c (generate_set_vrsave, rs6000_emit_savres_rtx),
	(rs6000_emit_prologue, rs6000_call_aix, rs6000_call_sysv),
	(rs6000_call_darwin_1): Use gen_hard_reg_clobber.

From-SVN: r267164

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9ef7f90..8e3fb57 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-12-15  Alan Modra  <amodra@gmail.com>
+
+       * config/rs6000/rs6000.c (generate_set_vrsave, rs6000_emit_savres_rtx),
+       (rs6000_emit_prologue, rs6000_call_aix, rs6000_call_sysv),
+       (rs6000_call_darwin_1): Use gen_hard_reg_clobber.
+
 2018-12-15  Jakub Jelinek  <jakub@redhat.com>
 
        PR target/88489

diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index c4682fc..f327c27 100644 (file)
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -25952,8 +25952,7 @@ generate_set_vrsave (rtx reg, rs6000_stack_t *info, int epiloguep)
     if (info->vrsave_mask & ALTIVEC_REG_BIT (i))
       {
        if (!epiloguep || call_used_regs [i])
-         clobs[nclobs++] = gen_rtx_CLOBBER (VOIDmode,
-                                            gen_rtx_REG (V4SImode, i));
+         clobs[nclobs++] = gen_hard_reg_clobber (V4SImode, i);
        else
          {
            rtx reg = gen_rtx_REG (V4SImode, i);
@@ -26277,8 +26276,7 @@ rs6000_emit_savres_rtx (rs6000_stack_t *info,
   if (!(sel & SAVRES_SAVE) && (sel & SAVRES_LR))
     RTVEC_ELT (p, offset++) = ret_rtx;
 
-  RTVEC_ELT (p, offset++)
-    = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, LR_REGNO));
+  RTVEC_ELT (p, offset++) = gen_hard_reg_clobber (Pmode, LR_REGNO);
 
   sym = rs6000_savres_routine_sym (info, sel);
   RTVEC_ELT (p, offset++) = gen_rtx_USE (VOIDmode, sym);
@@ -26287,8 +26285,7 @@ rs6000_emit_savres_rtx (rs6000_stack_t *info,
   if ((sel & SAVRES_REG) == SAVRES_VR)
     {
       /* Vector regs are saved/restored using [reg+reg] addressing.  */
-      RTVEC_ELT (p, offset++)
-       = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, use_reg));
+      RTVEC_ELT (p, offset++) = gen_hard_reg_clobber (Pmode, use_reg);
       RTVEC_ELT (p, offset++)
        = gen_rtx_USE (VOIDmode, gen_rtx_REG (Pmode, 0));
     }
@@ -26966,9 +26963,7 @@ rs6000_emit_prologue (void)
       sz += LAST_ALTIVEC_REGNO - info->first_altivec_reg_save + 1;
       p = rtvec_alloc (sz);
       j = 0;
-      RTVEC_ELT (p, j++) = gen_rtx_CLOBBER (VOIDmode,
-                                           gen_rtx_REG (SImode,
-                                                        LR_REGNO));
+      RTVEC_ELT (p, j++) = gen_hard_reg_clobber (SImode, LR_REGNO);
       RTVEC_ELT (p, j++) = gen_rtx_USE (VOIDmode,
                                        gen_rtx_SYMBOL_REF (Pmode,
                                                            "*save_world"));
@@ -28131,8 +28126,7 @@ rs6000_emit_epilogue (int sibcall)
        = gen_rtx_USE (VOIDmode, gen_rtx_SYMBOL_REF (Pmode, alloc_rname));
       /* The instruction pattern requires a clobber here;
         it is shared with the restVEC helper. */
-      RTVEC_ELT (p, j++)
-       = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, 11));
+      RTVEC_ELT (p, j++) = gen_hard_reg_clobber (Pmode, 11);
 
       {
        /* CR register traditionally saved as CR2.  */
@@ -28178,14 +28172,10 @@ rs6000_emit_epilogue (int sibcall)
              && save_reg_p (info->first_fp_reg_save + i))
            cfa_restores = alloc_reg_note (REG_CFA_RESTORE, reg, cfa_restores);
        }
-      RTVEC_ELT (p, j++)
-       = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, 0));
-      RTVEC_ELT (p, j++)
-       = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (SImode, 12));
-      RTVEC_ELT (p, j++)
-       = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (SImode, 7));
-      RTVEC_ELT (p, j++)
-       = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (SImode, 8));
+      RTVEC_ELT (p, j++) = gen_hard_reg_clobber (Pmode, 0);
+      RTVEC_ELT (p, j++) = gen_hard_reg_clobber (SImode, 12);
+      RTVEC_ELT (p, j++) = gen_hard_reg_clobber (SImode, 7);
+      RTVEC_ELT (p, j++) = gen_hard_reg_clobber (SImode, 8);
       RTVEC_ELT (p, j++)
        = gen_rtx_USE (VOIDmode, gen_rtx_REG (SImode, 10));
       insn = emit_jump_insn (gen_rtx_PARALLEL (VOIDmode, p));
@@ -28833,8 +28823,7 @@ rs6000_emit_epilogue (int sibcall)
       int elt = 0;
       RTVEC_ELT (p, elt++) = ret_rtx;
       if (lr)
-       RTVEC_ELT (p, elt++)
-         = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, LR_REGNO));
+       RTVEC_ELT (p, elt++) = gen_hard_reg_clobber (Pmode, LR_REGNO);
 
       /* We have to restore more than two FP registers, so branch to the
         restore function.  It will return to our caller.  */
@@ -37884,7 +37873,7 @@ rs6000_call_aix (rtx value, rtx func_desc, rtx tlsarg, rtx cookie)
   if (toc_restore)
     call[n_call++] = toc_restore;
 
-  call[n_call++] = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, LR_REGNO));
+  call[n_call++] = gen_hard_reg_clobber (Pmode, LR_REGNO);
 
   insn = gen_rtx_PARALLEL (VOIDmode, gen_rtvec_v (n_call, call));
   insn = emit_call_insn (insn);
@@ -37979,7 +37968,7 @@ rs6000_call_sysv (rtx value, rtx func_desc, rtx tlsarg, rtx cookie)
     call[0] = gen_rtx_SET (value, call[0]);
 
   call[1] = gen_rtx_USE (VOIDmode, cookie);
-  call[2] = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, LR_REGNO));
+  call[2] = gen_hard_reg_clobber (Pmode, LR_REGNO);
 
   insn = gen_rtx_PARALLEL (VOIDmode, gen_rtvec_v (3, call));
   insn = emit_call_insn (insn);
@@ -38117,7 +38106,7 @@ rs6000_call_darwin_1 (rtx value, rtx func_desc, rtx tlsarg,
   if (sibcall)
     call[2] = simple_return_rtx;
   else
-    call[2] = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, LR_REGNO));
+    call[2] = gen_hard_reg_clobber (Pmode, LR_REGNO);
 
   insn = gen_rtx_PARALLEL (VOIDmode, gen_rtvec_v (3, call));
   insn = emit_call_insn (insn);