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(arm umul_ppmm): Fix use of uninitialized register. 

Eliminate clobbers of hard registers.

From-SVN: r7663
This commit is contained in:
Richard Earnshaw 1994-07-06 11:27:16 +00:00
parent 20250c072b
commit 6a04a63408
1 changed files with 15 additions and 14 deletions
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29
gcc/longlong.h
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@ -150,24 +150,25 @@
"r" ((USItype)(al)), \
"rI" ((USItype)(bl)))
#define umul_ppmm(xh, xl, a, b) \
{register USItype __t0, __t1, __t2; \
__asm__ ("%@ Inlined umul_ppmm
mov %|r0, %2, lsr #16
mov %|r2, %3, lsr #16
bic %|r1, %2, %|r0, lsl #16
bic %|r2, %3, %|r2, lsl #16
mul %1, %|r1, %|r2
mul %|r2, %|r0, %|r2
mul %|r1, %0, %|r1
mul %0, %|r0, %0
adds %|r1, %|r2, %|r1
mov %2, %5, lsr #16
mov %0, %6, lsr #16
bic %3, %5, %2, lsl #16
bic %4, %6, %0, lsl #16
mul %1, %3, %4
mul %4, %2, %4
mul %3, %0, %3
mul %0, %2, %0
adds %3, %4, %3
addcs %0, %0, #65536
adds %1, %1, %|r1, lsl #16
adc %0, %0, %|r1, lsr #16" \
adds %1, %1, %3, lsl #16
adc %0, %0, %3, lsr #16" \
: "=&r" ((USItype)(xh)), \
"=r" ((USItype)(xl)) \
"=r" ((USItype)(xl)), \
"=&r" (__t0), "=&r" (__t1), "=r" (__t2) \
: "r" ((USItype)(a)), \
"r" ((USItype)(b)) \
: "r0", "r1", "r2")
"r" ((USItype)(b)));}
#define UMUL_TIME 20
#define UDIV_TIME 100
#endif /* __arm__ */