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Correct off by one bug on s390x subi.

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* lib/jit_s390x-cpu.c: Correct code checking if immediate
	fits instruction, but using the negated value.
This commit is contained in:
pcpa 2013-08-11 18:07:44 -03:00
parent c078a972b4
commit 19e227e035
2 changed files with 7 additions and 2 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2013-08-11 Paulo Andrade <pcpa@gnu.org>
* lib/jit_s390x-cpu.c: Correct code checking if immediate
fits instruction, but using the negated value.
2013-07-28 Paulo Andrade <pcpa@gnu.org>
* include/lightning/jit_s390x.h, lib/jit_s390x-cpu.c,

4
lib/jit_s390x-cpu.c
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@ -2377,9 +2377,9 @@ static void
_subi(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1, jit_word_t i0)
{
jit_int32_t reg;
if (r0 == r1 && s16_p(i0))
if (r0 == r1 && s16_p(-i0))
AGHI(r0, x16(-i0));
else if (s20_p(i0))
else if (s20_p(-i0))
LAY(r0, x20(-i0), 0, r1);
else {
reg = jit_get_reg(jit_class_gpr);