Hi,
the attached patch fixes the smul_ppmm and sdiv_qrnnd patterns for
zarch. Underscores were missing in local variables. DR referenced
the wrong operand and the source and result regs were swapped.
Tested on s390 with -mzarch.
Applied to 4.6 and mainline.
Bye,
-Andreas-
2011-10-04 Andreas Krebbel <andreas.kreb...@de.ibm.com>
* longlong.h (smul_ppmm, sdiv_qrnnd): Add underscores to the local
variables. Fix second operand of DR. Swap inputs for sdiv_qrnnd.
Index: gcc/longlong.h
===================================================================
*** gcc/longlong.h.orig
--- gcc/longlong.h
*************** UDItype __umulsidi3 (USItype, USItype);
*** 365,387 ****
#else
#define smul_ppmm(xh, xl, m0, m1) \
do { \
! register SItype r0 __asm__ ("0"); \
! register SItype r1 __asm__ ("1") = m0; \
\
__asm__ ("mr\t%%r0,%3" \
! : "=r" (r0), "=r" (r1) \
! : "r" (r1), "r" (m1)); \
! (xh) = r0; (xl) = r1; \
} while (0)
#define sdiv_qrnnd(q, r, n1, n0, d) \
! do {
\
! register SItype r0 __asm__ ("0") = n0; \
! register SItype r1 __asm__ ("1") = n1; \
\
! __asm__ ("dr\t%%r0,%3" \
! : "=r" (r0), "=r" (r1) \
! : "r" (r0), "r" (r1), "r" (d)); \
! (q) = r0; (r) = r1; \
} while (0)
#endif /* __zarch__ */
#endif
--- 365,388 ----
#else
#define smul_ppmm(xh, xl, m0, m1) \
do { \
! register SItype __r0 __asm__ ("0");
\
! register SItype __r1 __asm__ ("1") = (m0);
\
\
__asm__ ("mr\t%%r0,%3" \
! : "=r" (__r0), "=r" (__r1)
\
! : "r" (__r1), "r" (m1));
\
! (xh) = __r0; (xl) = __r1; \
} while (0)
+
#define sdiv_qrnnd(q, r, n1, n0, d) \
! do { \
! register SItype __r0 __asm__ ("0") = (n1);
\
! register SItype __r1 __asm__ ("1") = (n0);
\
\
! __asm__ ("dr\t%%r0,%4" \
! : "=r" (__r0), "=r" (__r1)
\
! : "r" (__r0), "r" (__r1), "r" (d)); \
! (q) = __r1; (r) = __r0; \
} while (0)
#endif /* __zarch__ */
#endif
