* sh.c (gen_shl_and): Don't create a zero_extend if the operand

	is not an arith_reg_operand.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@59201 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6434f60..f27dedb 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2002-11-17  Daniel Jacobowitz  <drow@mvista.com>
+
+       * sh.c (gen_shl_and): Don't create a zero_extend if the operand
+       is not an arith_reg_operand.
+
 2002-11-17  Graham Stott  <graham.stott@btinternet.com>
 
        * real.c (real_to_decimal): Fix buffer overrun when buffer size

diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c
index d2cc471..0ce5e06 100644 (file)
--- a/gcc/config/sh/sh.c
+++ b/gcc/config/sh/sh.c
@@ -1823,11 +1823,16 @@ gen_shl_and (dest, left_rtx, mask_rtx, source)
 
        if (first < 0)
          {
+           enum machine_mode mode
+             = ((mask << right) <= 0xff) ? QImode : HImode;
+           rtx lowpart = gen_lowpart (mode, source);
+
+           if (no_new_pseudos && ! TARGET_SHMEDIA
+               && ! arith_reg_operand (lowpart, mode))
+             return -1;
            emit_insn ((mask << right) <= 0xff
-                      ? gen_zero_extendqisi2(dest,
-                                             gen_lowpart (QImode, source))
-                      : gen_zero_extendhisi2(dest,
-                                             gen_lowpart (HImode, source)));
+                      ? gen_zero_extendqisi2(dest, lowpart)
+                      : gen_zero_extendhisi2(dest, lowpart));
            source = dest;
          }
        if (source != dest)
@@ -1846,9 +1851,18 @@ gen_shl_and (dest, left_rtx, mask_rtx, source)
            mask <<= first;
          }
        if (first >= 0)
-         emit_insn (mask <= 0xff
-                    ? gen_zero_extendqisi2(dest, gen_lowpart (QImode, dest))
-                    : gen_zero_extendhisi2(dest, gen_lowpart (HImode, dest)));
+         {
+           enum machine_mode mode = (mask <= 0xff) ? QImode : HImode;
+           rtx lowpart = gen_lowpart (mode, dest);
+
+           if (no_new_pseudos && ! TARGET_SHMEDIA
+               && ! arith_reg_operand (lowpart, mode))
+             return -1;
+           emit_insn (mask <= 0xff
+                      ? gen_zero_extendqisi2(dest, lowpart)
+                      : gen_zero_extendhisi2(dest, lowpart));
+         }
+       
        if (total_shift > 0)
          {
            operands[2] = GEN_INT (total_shift);