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Hexagon (target/hexagon) fix bug in fLSBNEW*

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Change fLSBNEW/fLSBNEW0/fLSBNEW1 from copy to "x & 1"
Remove gen_logical_not function
Clean up fLSBNEWNOT to use andi-1 followed by xori-1

Test cases added to tests/tcg/hexagon/misc.c

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1622589584-22571-2-git-send-email-tsimpson@quicinc.com>
This commit is contained in:
Taylor Simpson 2021-06-01 18:19:41 -05:00
parent 13d5f87cc3
commit 07c0f65385
3 changed files with 48 additions and 23 deletions
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27
target/hexagon/macros.h
View file

@ -239,33 +239,26 @@ static inline void gen_pred_cancel(TCGv pred, int slot_num)
#endif
#ifdef QEMU_GENERATE
#define fLSBNEW(PVAL) tcg_gen_mov_tl(LSB, (PVAL))
#define fLSBNEW0 tcg_gen_mov_tl(LSB, hex_new_pred_value[0])
#define fLSBNEW1 tcg_gen_mov_tl(LSB, hex_new_pred_value[1])
#define fLSBNEW(PVAL) tcg_gen_andi_tl(LSB, (PVAL), 1)
#define fLSBNEW0 tcg_gen_andi_tl(LSB, hex_new_pred_value[0], 1)
#define fLSBNEW1 tcg_gen_andi_tl(LSB, hex_new_pred_value[1], 1)
#else
#define fLSBNEW(PVAL) (PVAL)
#define fLSBNEW0 new_pred_value(env, 0)
#define fLSBNEW1 new_pred_value(env, 1)
#define fLSBNEW(PVAL) ((PVAL) & 1)
#define fLSBNEW0 (env->new_pred_value[0] & 1)
#define fLSBNEW1 (env->new_pred_value[1] & 1)
#endif
#ifdef QEMU_GENERATE
static inline void gen_logical_not(TCGv dest, TCGv src)
{
TCGv one = tcg_const_tl(1);
TCGv zero = tcg_const_tl(0);
tcg_gen_movcond_tl(TCG_COND_NE, dest, src, zero, zero, one);
tcg_temp_free(one);
tcg_temp_free(zero);
}
#define fLSBOLDNOT(VAL) \
do { \
tcg_gen_andi_tl(LSB, (VAL), 1); \
tcg_gen_xori_tl(LSB, LSB, 1); \
} while (0)
#define fLSBNEWNOT(PNUM) \
gen_logical_not(LSB, (PNUM))
do { \
tcg_gen_andi_tl(LSB, (PNUM), 1); \
tcg_gen_xori_tl(LSB, LSB, 1); \
} while (0)
#else
#define fLSBNEWNOT(PNUM) (!fLSBNEW(PNUM))
#define fLSBOLDNOT(VAL) (!fLSBOLD(VAL))

5
target/hexagon/op_helper.c
View file

@ -128,11 +128,6 @@ void HELPER(debug_start_packet)(CPUHexagonState *env)
}
}
static int32_t new_pred_value(CPUHexagonState *env, int pnum)
{
return env->new_pred_value[pnum];
}
/* Checks for bookkeeping errors between disassembly context and runtime */
void HELPER(debug_check_store_width)(CPUHexagonState *env, int slot, int check)
{

39
tests/tcg/hexagon/misc.c
View file

@ -181,6 +181,19 @@ static inline void S4_storeirifnew_io(void *p, int pred)
: "p0", "memory");
}
static int L2_ploadrifnew_pi(void *p, int pred)
{
int result;
asm volatile("%0 = #31\n\t"
"{\n\t"
" p0 = cmp.eq(%1, #1)\n\t"
" if (!p0.new) %0 = memw(%2++#4)\n\t"
"}\n\t"
: "=r"(result) : "r"(pred), "r"(p)
: "p0");
return result;
}
/*
* Test that compound-compare-jump is executed in 2 parts
* First we have to do all the compares in the packet and
@ -298,8 +311,24 @@ static int auto_and(void)
return retval;
}
void test_lsbnew(void)
{
int result;
asm("r0 = #2\n\t"
"r1 = #5\n\t"
"{\n\t"
" p0 = r0\n\t"
" if (p0.new) r1 = #3\n\t"
"}\n\t"
"%0 = r1\n\t"
: "=r"(result) :: "r0", "r1", "p0");
check(result, 5);
}
int main()
{
int res;
long long res64;
int pred;
@ -394,6 +423,12 @@ int main()
S4_storeirifnew_io(&array[8], 1);
check(array[9], 9);
memcpy(array, init, sizeof(array));
res = L2_ploadrifnew_pi(&array[6], 0);
check(res, 6);
res = L2_ploadrifnew_pi(&array[7], 1);
check(res, 31);
int x = cmpnd_cmp_jump();
check(x, 12);
@ -406,7 +441,7 @@ int main()
check((int)pair, 5);
check((int)(pair >> 32), 7);
int res = test_clrtnew(1, 7);
res = test_clrtnew(1, 7);
check(res, 0);
res = test_clrtnew(2, 7);
check(res, 7);
@ -422,6 +457,8 @@ int main()
res = auto_and();
check(res, 0);
test_lsbnew();
puts(err ? "FAIL" : "PASS");
return err;
}