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[multiple changes]

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2014-06-13  Jeff Law  <law@redhat.com>

	PR rtl-optimization/61094
	PR rtl-optimization/61446
	* ree.c (combine_reaching_defs): Get the mode for the copy from
	the extension insn rather than the defining insn.

2014-06-13  Ilya Enkovich  <ilya.enkovich@intel.com>

	PR rtl-optimization/61094
	PR rtl-optimization/61446
	* gcc.target/i386/pr61446.c : New.

From-SVN: r211649
This commit is contained in:
Jeff Law 2014-06-13 10:40:48 -06:00
parent 8e96d78433
commit c7ece684ca
4 changed files with 34 additions and 4 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2014-06-13 Jeff Law <law@redhat.com>
PR rtl-optimization/61094
PR rtl-optimization/61446
* ree.c (combine_reaching_defs): Get the mode for the copy from
the extension insn rather than the defining insn.
2014-06-13 Dehao Chen <dehao@google.com>
* dwarf2out.c (add_linkage_name): Emit more linkage name.

11
gcc/ree.c
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@ -787,13 +787,16 @@ combine_reaching_defs (ext_cand *cand, const_rtx set_pat, ext_state *state)
generated more than one insn.
This generates garbage since we throw away the insn when we're
done, only to recreate it later if this test was successful. */
done, only to recreate it later if this test was successful.
Make sure to get the mode from the extension (cand->insn). This
is different than in the code to emit the copy as we have not
modified the defining insn yet. */
start_sequence ();
rtx sub_rtx = *get_sub_rtx (def_insn);
rtx pat = PATTERN (cand->insn);
rtx new_dst = gen_rtx_REG (GET_MODE (SET_DEST (sub_rtx)),
rtx new_dst = gen_rtx_REG (GET_MODE (SET_DEST (pat)),
REGNO (XEXP (SET_SRC (pat), 0)));
rtx new_src = gen_rtx_REG (GET_MODE (SET_DEST (sub_rtx)),
rtx new_src = gen_rtx_REG (GET_MODE (SET_DEST (pat)),
REGNO (SET_DEST (pat)));
emit_move_insn (new_dst, new_src);

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2014-06-13 Ilya Enkovich <ilya.enkovich@intel.com>
PR rtl-optimization/61094
PR rtl-optimization/61446
* gcc.target/i386/pr61446.c : New.
2014-06-13 Dehao Chen <dehao@google.com>
* g++.dg/debug/dwarf2/cdtor-1.C: Update test result.

14
gcc/testsuite/gcc.target/i386/pr61446.c Normal file
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@ -0,0 +1,14 @@
/* PR rtl-optimization/61446 */
/* { dg-do compile { target { ia32 } } } */
/* { dg-options "-O2 -march=corei7 -mfpmath=387" } */
unsigned long long
foo (float a)
{
const double dfa = a;
const unsigned int hi = dfa / 0x1p32f;
const unsigned int lo = dfa - (double) hi * 0x1p32f;
return ((unsigned long long) hi << (4 * (8))) | lo;
}