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cse.c (cse_insn): Fix missing check for STRICT_LOW_PART and minor clean up.

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gcc/ChangeLog:

2015-07-23  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* cse.c (cse_insn): Fix missing check for STRICT_LOW_PART and minor
	clean up.

From-SVN: r226134
This commit is contained in:
Kugan Vivekanandarajah 2015-07-24 01:38:19 +00:00 • committed by Kugan Vivekanandarajah
parent 46e82d43f1
commit fa24123b0f
2 changed files with 10 additions and 5 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2015-07-23 Kugan Vivekanandarajah <kuganv@linaro.org>
* cse.c (cse_insn): Fix missing check for STRICT_LOW_PART and minor
clean up.
2015-07-23 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.c (ix86_build_builtin_va_list_64): Rename

10
gcc/cse.c
View file

@ -4529,10 +4529,10 @@ cse_insn (rtx_insn *insn)
this case, and if it isn't set, then there will be no equivalence
for the destination. */
if (n_sets == 1 && REG_NOTES (insn) != 0
&& (tem = find_reg_note (insn, REG_EQUAL, NULL_RTX)) != 0)
&& (tem = find_reg_note (insn, REG_EQUAL, NULL_RTX)) != 0
&& (! rtx_equal_p (XEXP (tem, 0), SET_SRC (sets[0].rtl))))
{
if ((! rtx_equal_p (XEXP (tem, 0), SET_SRC (sets[0].rtl)))
|| GET_CODE (SET_DEST (sets[0].rtl)) == STRICT_LOW_PART)
if (GET_CODE (SET_DEST (sets[0].rtl)) == STRICT_LOW_PART)
src_eqv = copy_rtx (XEXP (tem, 0));
/* If DEST is of the form ZERO_EXTACT, as in:
@ -4544,14 +4544,14 @@ cse_insn (rtx_insn *insn)
point. Note that this is different from SRC_EQV. We can however
calculate SRC_EQV with the position and width of ZERO_EXTRACT. */
else if (GET_CODE (SET_DEST (sets[0].rtl)) == ZERO_EXTRACT
&& CONST_INT_P (src_eqv)
&& CONST_INT_P (XEXP (tem, 0))
&& CONST_INT_P (XEXP (SET_DEST (sets[0].rtl), 1))
&& CONST_INT_P (XEXP (SET_DEST (sets[0].rtl), 2)))
{
rtx dest_reg = XEXP (SET_DEST (sets[0].rtl), 0);
rtx width = XEXP (SET_DEST (sets[0].rtl), 1);
rtx pos = XEXP (SET_DEST (sets[0].rtl), 2);
HOST_WIDE_INT val = INTVAL (src_eqv);
HOST_WIDE_INT val = INTVAL (XEXP (tem, 0));
HOST_WIDE_INT mask;
unsigned int shift;
if (BITS_BIG_ENDIAN)