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rs6000.md (rs6000_adjust_atomic_subword): Use gen_ashlsi3 and gen_andsi3 instead of gen_rlwinm. 

* config/rs6000/rs6000.md (rs6000_adjust_atomic_subword): Use
	gen_ashlsi3 and gen_andsi3 instead of gen_rlwinm.

From-SVN: r223071
This commit is contained in:
Segher Boessenkool 2015-05-12 15:49:21 +02:00 committed by Segher Boessenkool
parent 52a680ceaa
commit 1a93ca861c
2 changed files with 8 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2015-05-12 Segher Boessenkool <segher@kernel.crashing.org>
* config/rs6000/rs6000.md (rs6000_adjust_atomic_subword): Use
gen_ashlsi3 and gen_andsi3 instead of gen_rlwinm.
2015-05-12 Segher Boessenkool <segher@kernel.crashing.org>
* config/rs6000/rs6000.md (extzv): FAIL for SImode.

4
gcc/config/rs6000/rs6000.c
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@ -20580,7 +20580,9 @@ rs6000_adjust_atomic_subword (rtx orig_mem, rtx *pshift, rtx *pmask)
/* Shift amount for subword relative to aligned word. */
shift = gen_reg_rtx (SImode);
addr = gen_lowpart (SImode, addr);
emit_insn (gen_rlwinm (shift, addr, GEN_INT (3), GEN_INT (shift_mask)));
rtx tmp = gen_reg_rtx (SImode);
emit_insn (gen_ashlsi3 (tmp, addr, GEN_INT (3)));
emit_insn (gen_andsi3 (shift, tmp, GEN_INT (shift_mask)));
if (BYTES_BIG_ENDIAN)
shift = expand_simple_binop (SImode, XOR, shift, GEN_INT (shift_mask),
shift, 1, OPTAB_LIB_WIDEN);