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Fixed conditional move tcg bug (tcg_gen_movcond), which generated an ALWAYS / NEVER condition despite QEMU no supporting those conditions in the tcg_out part (#1054)

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dmarxn 2019-01-31 03:59:51 +02:00 committed by Nguyen Anh Quynh
parent 8c6cbe3f3c
commit 3df5ef8ab1
1 changed files with 49 additions and 37 deletions
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86
qemu/tcg/tcg-op.h
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@ -2195,7 +2195,12 @@ static inline void tcg_gen_movcond_i32(TCGContext *s, TCGCond cond, TCGv_i32 ret
TCGv_i32 c1, TCGv_i32 c2,
TCGv_i32 v1, TCGv_i32 v2)
{
if (TCG_TARGET_HAS_movcond_i32) {
if (cond == TCG_COND_ALWAYS) {
tcg_gen_mov_i32(s, ret, v1);
} else if (cond == TCG_COND_NEVER) {
tcg_gen_mov_i32(s, ret, v2);
}
else if (TCG_TARGET_HAS_movcond_i32) {
tcg_gen_op6i_i32(s, INDEX_op_movcond_i32, ret, c1, c2, v1, v2, cond);
} else {
TCGv_i32 t0 = tcg_temp_new_i32(s);
@ -2214,47 +2219,54 @@ static inline void tcg_gen_movcond_i64(TCGContext *s, TCGCond cond, TCGv_i64 ret
TCGv_i64 c1, TCGv_i64 c2,
TCGv_i64 v1, TCGv_i64 v2)
{
if (cond == TCG_COND_ALWAYS) {
tcg_gen_mov_i64(s, ret, v1);
} else if (cond == TCG_COND_NEVER) {
tcg_gen_mov_i64(s, ret, v2);
}
else {
#if TCG_TARGET_REG_BITS == 32
TCGv_i32 t0 = tcg_temp_new_i32(s);
TCGv_i32 t1 = tcg_temp_new_i32(s);
tcg_gen_op6i_i32(s, INDEX_op_setcond2_i32, t0,
TCGV_LOW(c1), TCGV_HIGH(c1),
TCGV_LOW(c2), TCGV_HIGH(c2), cond);
TCGv_i32 t0 = tcg_temp_new_i32(s);
TCGv_i32 t1 = tcg_temp_new_i32(s);
tcg_gen_op6i_i32(s, INDEX_op_setcond2_i32, t0,
TCGV_LOW(c1), TCGV_HIGH(c1),
TCGV_LOW(c2), TCGV_HIGH(c2), cond);
if (TCG_TARGET_HAS_movcond_i32) {
tcg_gen_movi_i32(s, t1, 0);
tcg_gen_movcond_i32(s, TCG_COND_NE, TCGV_LOW(ret), t0, t1,
TCGV_LOW(v1), TCGV_LOW(v2));
tcg_gen_movcond_i32(s, TCG_COND_NE, TCGV_HIGH(ret), t0, t1,
TCGV_HIGH(v1), TCGV_HIGH(v2));
} else {
tcg_gen_neg_i32(s, t0, t0);
if (TCG_TARGET_HAS_movcond_i32) {
tcg_gen_movi_i32(s, t1, 0);
tcg_gen_movcond_i32(s, TCG_COND_NE, TCGV_LOW(ret), t0, t1,
TCGV_LOW(v1), TCGV_LOW(v2));
tcg_gen_movcond_i32(s, TCG_COND_NE, TCGV_HIGH(ret), t0, t1,
TCGV_HIGH(v1), TCGV_HIGH(v2));
} else {
tcg_gen_neg_i32(s, t0, t0);
tcg_gen_and_i32(s, t1, TCGV_LOW(v1), t0);
tcg_gen_andc_i32(s, TCGV_LOW(ret), TCGV_LOW(v2), t0);
tcg_gen_or_i32(s, TCGV_LOW(ret), TCGV_LOW(ret), t1);
tcg_gen_and_i32(s, t1, TCGV_LOW(v1), t0);
tcg_gen_andc_i32(s, TCGV_LOW(ret), TCGV_LOW(v2), t0);
tcg_gen_or_i32(s, TCGV_LOW(ret), TCGV_LOW(ret), t1);
tcg_gen_and_i32(s, t1, TCGV_HIGH(v1), t0);
tcg_gen_andc_i32(s, TCGV_HIGH(ret), TCGV_HIGH(v2), t0);
tcg_gen_or_i32(s, TCGV_HIGH(ret), TCGV_HIGH(ret), t1);
}
tcg_temp_free_i32(s, t0);
tcg_temp_free_i32(s, t1);
#else
if (TCG_TARGET_HAS_movcond_i64) {
tcg_gen_op6i_i64(s, INDEX_op_movcond_i64, ret, c1, c2, v1, v2, cond);
} else {
TCGv_i64 t0 = tcg_temp_new_i64(s);
TCGv_i64 t1 = tcg_temp_new_i64(s);
tcg_gen_setcond_i64(s, cond, t0, c1, c2);
tcg_gen_neg_i64(s, t0, t0);
tcg_gen_and_i64(s, t1, v1, t0);
tcg_gen_andc_i64(s, ret, v2, t0);
tcg_gen_or_i64(s, ret, ret, t1);
tcg_temp_free_i64(s, t0);
tcg_temp_free_i64(s, t1);
}
tcg_gen_and_i32(s, t1, TCGV_HIGH(v1), t0);
tcg_gen_andc_i32(s, TCGV_HIGH(ret), TCGV_HIGH(v2), t0);
tcg_gen_or_i32(s, TCGV_HIGH(ret), TCGV_HIGH(ret), t1);
}
tcg_temp_free_i32(s, t0);
tcg_temp_free_i32(s, t1);
#else
if (TCG_TARGET_HAS_movcond_i64) {
tcg_gen_op6i_i64(s, INDEX_op_movcond_i64, ret, c1, c2, v1, v2, cond);
} else {
TCGv_i64 t0 = tcg_temp_new_i64(s);
TCGv_i64 t1 = tcg_temp_new_i64(s);
tcg_gen_setcond_i64(s, cond, t0, c1, c2);
tcg_gen_neg_i64(s, t0, t0);
tcg_gen_and_i64(s, t1, v1, t0);
tcg_gen_andc_i64(s, ret, v2, t0);
tcg_gen_or_i64(s, ret, ret, t1);
tcg_temp_free_i64(s, t0);
tcg_temp_free_i64(s, t1);
}
#endif
}
}
static inline void tcg_gen_add2_i32(TCGContext *s, TCGv_i32 rl, TCGv_i32 rh, TCGv_i32 al,