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re PR middle-end/54862 (error: comparison between signed and unsigned integer expressions in simplify-rtx.c) 

PR middle-end/54862
	* simplify-rtx.c (simplify_truncation): Compare UINTVAL instead of
	INTVAL of second argument with precision resp. op_precision.

From-SVN: r192302
This commit is contained in:
Jakub Jelinek 2012-10-10 12:40:35 +02:00 committed by Jakub Jelinek
parent f739e97a83
commit 0365ba7cd0
2 changed files with 10 additions and 5 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-10-10 Jakub Jelinek <jakub@redhat.com>
PR middle-end/54862
* simplify-rtx.c (simplify_truncation): Compare UINTVAL instead of
INTVAL of second argument with precision resp. op_precision.
2012-10-10 Dodji Seketeli <dodji@redhat.com>
PR middle-end/54860 - Make sure attributes hash table is created

9
gcc/simplify-rtx.c
View File

@ -668,7 +668,7 @@ simplify_truncation (enum machine_mode mode, rtx op,
&& CONST_INT_P (XEXP (op, 1))
&& GET_CODE (XEXP (op, 0)) == SIGN_EXTEND
&& GET_MODE (XEXP (XEXP (op, 0), 0)) == mode
&& INTVAL (XEXP (op, 1)) < precision)
&& UINTVAL (XEXP (op, 1)) < precision)
return simplify_gen_binary (ASHIFTRT, mode,
XEXP (XEXP (op, 0), 0), XEXP (op, 1));
@ -680,7 +680,7 @@ simplify_truncation (enum machine_mode mode, rtx op,
&& CONST_INT_P (XEXP (op, 1))
&& GET_CODE (XEXP (op, 0)) == ZERO_EXTEND
&& GET_MODE (XEXP (XEXP (op, 0), 0)) == mode
&& INTVAL (XEXP (op, 1)) < precision)
&& UINTVAL (XEXP (op, 1)) < precision)
return simplify_gen_binary (LSHIFTRT, mode,
XEXP (XEXP (op, 0), 0), XEXP (op, 1));
@ -692,7 +692,7 @@ simplify_truncation (enum machine_mode mode, rtx op,
&& (GET_CODE (XEXP (op, 0)) == ZERO_EXTEND
|| GET_CODE (XEXP (op, 0)) == SIGN_EXTEND)
&& GET_MODE (XEXP (XEXP (op, 0), 0)) == mode
&& INTVAL (XEXP (op, 1)) < precision)
&& UINTVAL (XEXP (op, 1)) < precision)
return simplify_gen_binary (ASHIFT, mode,
XEXP (XEXP (op, 0), 0), XEXP (op, 1));
@ -705,8 +705,7 @@ simplify_truncation (enum machine_mode mode, rtx op,
&& 2 * precision <= op_precision
&& CONST_INT_P (XEXP (op, 1))
&& (INTVAL (XEXP (op, 1)) & (precision - 1)) == 0
&& INTVAL (XEXP (op, 1)) >= 0
&& INTVAL (XEXP (op, 1)) < op_precision)
&& UINTVAL (XEXP (op, 1)) < op_precision)
{
int byte = subreg_lowpart_offset (mode, op_mode);
int shifted_bytes = INTVAL (XEXP (op, 1)) / BITS_PER_UNIT;