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authorLaurent Vivier <laurent@vivier.eu>2018-04-30 19:01:56 +0200
committerLaurent Vivier <laurent@vivier.eu>2018-05-01 15:37:20 +0200
commit6361d2984ce88912976a34e1797a5ad5139c649b (patch)
tree50f2f967cf8c537f0efe535f58b089f278ef06db /target/m68k
parent981348af5c3c72335d95f6877abf702d80176eb3 (diff)
m68k: remove dead code (Coverity CID1390617)
floatx80_sin() and floatx80_cos() are derived from one sincos() function. They have both unused code coming from their common origin. Remove it. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20180430170156.1860-2-laurent@vivier.eu>
Diffstat (limited to 'target/m68k')
-rw-r--r--target/m68k/softfloat.c43
1 files changed, 14 insertions, 29 deletions
diff --git a/target/m68k/softfloat.c b/target/m68k/softfloat.c
index 2c069a5efb..e41b07d042 100644
--- a/target/m68k/softfloat.c
+++ b/target/m68k/softfloat.c
@@ -1497,7 +1497,7 @@ floatx80 floatx80_sin(floatx80 a, float_status *status)
int32_t compact, l, n, j;
floatx80 fp0, fp1, fp2, fp3, fp4, fp5, x, invtwopi, twopi1, twopi2;
float32 posneg1, twoto63;
- flag adjn, endflag;
+ flag endflag;
aSig = extractFloatx80Frac(a);
aExp = extractFloatx80Exp(a);
@@ -1515,8 +1515,6 @@ floatx80 floatx80_sin(floatx80 a, float_status *status)
return packFloatx80(aSign, 0, 0);
}
- adjn = 0;
-
user_rnd_mode = status->float_rounding_mode;
user_rnd_prec = status->floatx80_rounding_precision;
status->float_rounding_mode = float_round_nearest_even;
@@ -1591,14 +1589,8 @@ floatx80 floatx80_sin(floatx80 a, float_status *status)
status->float_rounding_mode = user_rnd_mode;
status->floatx80_rounding_precision = user_rnd_prec;
- if (adjn) {
- /* COSTINY */
- a = floatx80_sub(fp0, float32_to_floatx80(
- make_float32(0x00800000), status), status);
- } else {
- /* SINTINY */
- a = floatx80_move(a, status);
- }
+ /* SINTINY */
+ a = floatx80_move(a, status);
float_raise(float_flag_inexact, status);
return a;
@@ -1616,7 +1608,7 @@ floatx80 floatx80_sin(floatx80 a, float_status *status)
status); /* FP0 IS R = (X-Y1)-Y2 */
sincont:
- if ((n + adjn) & 1) {
+ if (n & 1) {
/* COSPOLY */
fp0 = floatx80_mul(fp0, fp0, status); /* FP0 IS S */
fp1 = floatx80_mul(fp0, fp0, status); /* FP1 IS T */
@@ -1629,7 +1621,7 @@ floatx80 floatx80_sin(floatx80 a, float_status *status)
xExp = extractFloatx80Exp(fp0);
xSig = extractFloatx80Frac(fp0);
- if (((n + adjn) >> 1) & 1) {
+ if ((n >> 1) & 1) {
xSign ^= 1;
posneg1 = make_float32(0xBF800000); /* -1 */
} else {
@@ -1681,7 +1673,7 @@ floatx80 floatx80_sin(floatx80 a, float_status *status)
xExp = extractFloatx80Exp(fp0);
xSig = extractFloatx80Frac(fp0);
- xSign ^= ((n + adjn) >> 1) & 1; /* X IS NOW R'= SGN*R */
+ xSign ^= (n >> 1) & 1; /* X IS NOW R'= SGN*R */
fp0 = floatx80_mul(fp0, fp0, status); /* FP0 IS S */
fp1 = floatx80_mul(fp0, fp0, status); /* FP1 IS T */
@@ -1744,7 +1736,7 @@ floatx80 floatx80_cos(floatx80 a, float_status *status)
int32_t compact, l, n, j;
floatx80 fp0, fp1, fp2, fp3, fp4, fp5, x, invtwopi, twopi1, twopi2;
float32 posneg1, twoto63;
- flag adjn, endflag;
+ flag endflag;
aSig = extractFloatx80Frac(a);
aExp = extractFloatx80Exp(a);
@@ -1762,8 +1754,6 @@ floatx80 floatx80_cos(floatx80 a, float_status *status)
return packFloatx80(0, one_exp, one_sig);
}
- adjn = 1;
-
user_rnd_mode = status->float_rounding_mode;
user_rnd_prec = status->floatx80_rounding_precision;
status->float_rounding_mode = float_round_nearest_even;
@@ -1837,15 +1827,10 @@ floatx80 floatx80_cos(floatx80 a, float_status *status)
status->float_rounding_mode = user_rnd_mode;
status->floatx80_rounding_precision = user_rnd_prec;
- if (adjn) {
- /* COSTINY */
- a = floatx80_sub(fp0, float32_to_floatx80(
- make_float32(0x00800000), status),
- status);
- } else {
- /* SINTINY */
- a = floatx80_move(a, status);
- }
+ /* COSTINY */
+ a = floatx80_sub(fp0, float32_to_floatx80(
+ make_float32(0x00800000), status),
+ status);
float_raise(float_flag_inexact, status);
return a;
@@ -1863,7 +1848,7 @@ floatx80 floatx80_cos(floatx80 a, float_status *status)
status); /* FP0 IS R = (X-Y1)-Y2 */
sincont:
- if ((n + adjn) & 1) {
+ if ((n + 1) & 1) {
/* COSPOLY */
fp0 = floatx80_mul(fp0, fp0, status); /* FP0 IS S */
fp1 = floatx80_mul(fp0, fp0, status); /* FP1 IS T */
@@ -1876,7 +1861,7 @@ floatx80 floatx80_cos(floatx80 a, float_status *status)
xExp = extractFloatx80Exp(fp0);
xSig = extractFloatx80Frac(fp0);
- if (((n + adjn) >> 1) & 1) {
+ if (((n + 1) >> 1) & 1) {
xSign ^= 1;
posneg1 = make_float32(0xBF800000); /* -1 */
} else {
@@ -1927,7 +1912,7 @@ floatx80 floatx80_cos(floatx80 a, float_status *status)
xExp = extractFloatx80Exp(fp0);
xSig = extractFloatx80Frac(fp0);
- xSign ^= ((n + adjn) >> 1) & 1; /* X IS NOW R'= SGN*R */
+ xSign ^= ((n + 1) >> 1) & 1; /* X IS NOW R'= SGN*R */
fp0 = floatx80_mul(fp0, fp0, status); /* FP0 IS S */
fp1 = floatx80_mul(fp0, fp0, status); /* FP1 IS T */