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| author | rask <rask@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-11-26 13:20:19 +0000 |
|---|---|---|
| committer | rask <rask@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-11-26 13:20:19 +0000 |
| commit | 39d50e809cdefce7021b37deb5e107777274efae (patch) | |
| tree | 6f58da5b15fd0a15696502ec57a557360598571b /gcc/config/fr30/fr30.c | |
| parent | 5c6565d058f8bdc273b4a9031ceada2c489137cb (diff) | |
| download | gcc-39d50e809cdefce7021b37deb5e107777274efae.tar.gz | |
PR target/34174
* config/fr30/fr30.c (fr30_move_double): Sanitize mem->reg case. Copy
the address before it is clobbered.
testsuite/
* gcc.dg/torture/pr34174-1.c: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@130438 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/config/fr30/fr30.c')
| -rw-r--r-- | gcc/config/fr30/fr30.c | 48 |
1 files changed, 12 insertions, 36 deletions
diff --git a/gcc/config/fr30/fr30.c b/gcc/config/fr30/fr30.c index 343dd02ba09..8c523567bb9 100644 --- a/gcc/config/fr30/fr30.c +++ b/gcc/config/fr30/fr30.c @@ -828,47 +828,23 @@ fr30_move_double (rtx * operands) { rtx addr = XEXP (src, 0); int dregno = REGNO (dest); - rtx dest0; - rtx dest1; + rtx dest0 = operand_subword (dest, 0, TRUE, mode);; + rtx dest1 = operand_subword (dest, 1, TRUE, mode);; rtx new_mem; - /* If the high-address word is used in the address, we - must load it last. Otherwise, load it first. */ - int reverse = (refers_to_regno_p (dregno, dregno + 1, addr, 0) != 0); - gcc_assert (GET_CODE (addr) == REG); - dest0 = operand_subword (dest, reverse, TRUE, mode); - dest1 = operand_subword (dest, !reverse, TRUE, mode); - - if (reverse) - { - emit_insn (gen_rtx_SET (VOIDmode, dest1, - adjust_address (src, SImode, 0))); - emit_insn (gen_rtx_SET (SImode, dest0, - gen_rtx_REG (SImode, REGNO (addr)))); - emit_insn (gen_rtx_SET (SImode, dest0, - plus_constant (dest0, UNITS_PER_WORD))); - - new_mem = gen_rtx_MEM (SImode, dest0); - MEM_COPY_ATTRIBUTES (new_mem, src); - - emit_insn (gen_rtx_SET (VOIDmode, dest0, new_mem)); - } - else - { - emit_insn (gen_rtx_SET (VOIDmode, dest0, - adjust_address (src, SImode, 0))); - emit_insn (gen_rtx_SET (SImode, dest1, - gen_rtx_REG (SImode, REGNO (addr)))); - emit_insn (gen_rtx_SET (SImode, dest1, - plus_constant (dest1, UNITS_PER_WORD))); - - new_mem = gen_rtx_MEM (SImode, dest1); - MEM_COPY_ATTRIBUTES (new_mem, src); + /* Copy the address before clobbering it. See PR 34174. */ + emit_insn (gen_rtx_SET (SImode, dest1, addr)); + emit_insn (gen_rtx_SET (VOIDmode, dest0, + adjust_address (src, SImode, 0))); + emit_insn (gen_rtx_SET (SImode, dest1, + plus_constant (dest1, UNITS_PER_WORD))); + + new_mem = gen_rtx_MEM (SImode, dest1); + MEM_COPY_ATTRIBUTES (new_mem, src); - emit_insn (gen_rtx_SET (VOIDmode, dest1, new_mem)); - } + emit_insn (gen_rtx_SET (VOIDmode, dest1, new_mem)); } else if (src_code == CONST_INT || src_code == CONST_DOUBLE) { |