Hi,
In aarch64_float_const_representable, `sign' is unused.
This patch removes all references to it. The patch is equally
applicable to trunk and aarch64-4.7-branch.
This patch fixes the warning:
config/aarch64/aarch64.c: In function ‘aarch64_float_const_representable_p’:
config/aarch64/aarch64.c:7075:7: warning: variable ‘sign’ set but not used
[-Wunused-but-set-variable]
Regression tested on aarch64-none-elf with no regressions.
OK for trunk and aarch64-4.7-branch?
Thanks,
James Greenhalgh
---
gcc/
2013-02-28 James Greenhalgh <james.greenha...@arm.com>
* config/aarch64/aarch64.c
(aarch64_float_const_representable): Remove unused variable.
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index a1e4cdd..8c8532c 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -7088,7 +7088,7 @@ aarch64_float_const_representable_p (rtx x)
/* This represents our current view of how many bits
make up the mantissa. */
int point_pos = 2 * HOST_BITS_PER_WIDE_INT - 1;
- int sign, exponent;
+ int exponent;
unsigned HOST_WIDE_INT mantissa, mask;
HOST_WIDE_INT m1, m2;
REAL_VALUE_TYPE r, m;
@@ -7105,8 +7105,7 @@ aarch64_float_const_representable_p (rtx x)
|| REAL_VALUE_MINUS_ZERO (r))
return false;
- /* Extract sign and exponent. */
- sign = REAL_VALUE_NEGATIVE (r) ? 1 : 0;
+ /* Extract exponent. */
r = real_value_abs (&r);
exponent = REAL_EXP (&r);
