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re PR target/64160 (msp430 code generation error adding 32-bit integers)

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PR target/64160
	* config/msp430/msp430.md (addsi splitter): Do not split when the
	destination partially overlaps the source.

From-SVN: r219058
This commit is contained in:
Nick Clifton 2014-12-24 13:36:29 +00:00 committed by Nick Clifton
parent 923d093af2
commit 5704db3364
2 changed files with 14 additions and 6 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2014-12-24 Nick Clifton <nickc@redhat.com>
PR target/64160
* config/msp430/msp430.md (addsi splitter): Do not split when the
destination partially overlaps the source.
2014-12-22 Zhouyi Zhou <yizhouzhou@ict.ac.cn>
* ira-build.c (ira_flattening): Add the current

14
gcc/config/msp430/msp430.md
View File

@ -402,14 +402,16 @@
operands[6] = msp430_subreg (HImode, operands[0], SImode, 2);
operands[7] = msp430_subreg (HImode, operands[1], SImode, 2);
operands[8] = msp430_subreg (HImode, operands[2], SImode, 2);
/* BZ 64160: Do not use this splitter when the dest partially overlaps the source. */
if (reg_overlap_mentioned_p (operands[3], operands[7])
|| reg_overlap_mentioned_p (operands[3], operands[8]))
FAIL;
if (GET_CODE (operands[5]) == CONST_INT)
{
operands[9] = GEN_INT (INTVAL (operands[5]) & 0xffff);
}
operands[9] = GEN_INT (INTVAL (operands[5]) & 0xffff);
else
{
operands[9] = gen_rtx_ZERO_EXTEND (SImode, operands[5]);
}
operands[9] = gen_rtx_ZERO_EXTEND (SImode, operands[5]);
"
)