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tcg: Add base arguments to check_overlap_[234]

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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
2025-06-23 09:22:19 -07:00
parent ca09b6b5e5
commit 872dab5b7e
1 changed files with 36 additions and 25 deletions
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tcg/tcg-op-gvec.c
+36 -25
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@@ -57,30 +57,39 @@ static void check_size_align(uint32_t oprsz, uint32_t maxsz, uint32_t ofs)
tcg_debug_assert((ofs & max_align) == 0);
}
/* Verify vector overlap rules for two operands. */
static void check_overlap_2(uint32_t d, uint32_t a, uint32_t s)
/*
* Verify vector overlap rules for two operands.
* When dbase and abase are not the same pointer, we cannot check for
* overlap at compile-time, but the runtime restrictions remain.
*/
static void check_overlap_2(TCGv_ptr dbase, uint32_t d,
TCGv_ptr abase, uint32_t a, uint32_t s)
{
tcg_debug_assert(d == a || d + s <= a || a + s <= d);
tcg_debug_assert(dbase != abase || d == a || d + s <= a || a + s <= d);
}
/* Verify vector overlap rules for three operands. */
static void check_overlap_3(uint32_t d, uint32_t a, uint32_t b, uint32_t s)
static void check_overlap_3(TCGv_ptr dbase, uint32_t d,
TCGv_ptr abase, uint32_t a,
TCGv_ptr bbase, uint32_t b, uint32_t s)
{
check_overlap_2(d, a, s);
check_overlap_2(d, b, s);
check_overlap_2(a, b, s);
check_overlap_2(dbase, d, abase, a, s);
check_overlap_2(dbase, d, bbase, b, s);
check_overlap_2(abase, a, bbase, b, s);
}
/* Verify vector overlap rules for four operands. */
static void check_overlap_4(uint32_t d, uint32_t a, uint32_t b,
uint32_t c, uint32_t s)
static void check_overlap_4(TCGv_ptr dbase, uint32_t d,
TCGv_ptr abase, uint32_t a,
TCGv_ptr bbase, uint32_t b,
TCGv_ptr cbase, uint32_t c, uint32_t s)
{
check_overlap_2(d, a, s);
check_overlap_2(d, b, s);
check_overlap_2(d, c, s);
check_overlap_2(a, b, s);
check_overlap_2(a, c, s);
check_overlap_2(b, c, s);
check_overlap_2(dbase, d, abase, a, s);
check_overlap_2(dbase, d, bbase, b, s);
check_overlap_2(dbase, d, cbase, c, s);
check_overlap_2(abase, a, bbase, b, s);
check_overlap_2(abase, a, cbase, c, s);
check_overlap_2(bbase, b, cbase, c, s);
}
/* Create a descriptor from components. */
@@ -1206,7 +1215,7 @@ void tcg_gen_gvec_2(uint32_t dofs, uint32_t aofs,
uint32_t some;
check_size_align(oprsz, maxsz, dofs | aofs);
check_overlap_2(dofs, aofs, maxsz);
check_overlap_2(tcg_env, dofs, tcg_env, aofs, maxsz);
type = 0;
if (g->fniv) {
@@ -1270,7 +1279,7 @@ void tcg_gen_gvec_2i(uint32_t dofs, uint32_t aofs, uint32_t oprsz,
uint32_t some;
check_size_align(oprsz, maxsz, dofs | aofs);
check_overlap_2(dofs, aofs, maxsz);
check_overlap_2(tcg_env, dofs, tcg_env, aofs, maxsz);
type = 0;
if (g->fniv) {
@@ -1336,7 +1345,7 @@ void tcg_gen_gvec_2s(uint32_t dofs, uint32_t aofs, uint32_t oprsz,
TCGType type;
check_size_align(oprsz, maxsz, dofs | aofs);
check_overlap_2(dofs, aofs, maxsz);
check_overlap_2(tcg_env, dofs, tcg_env, aofs, maxsz);
type = 0;
if (g->fniv) {
@@ -1416,7 +1425,7 @@ void tcg_gen_gvec_3(uint32_t dofs, uint32_t aofs, uint32_t bofs,
uint32_t some;
check_size_align(oprsz, maxsz, dofs | aofs | bofs);
check_overlap_3(dofs, aofs, bofs, maxsz);
check_overlap_3(tcg_env, dofs, tcg_env, aofs, tcg_env, bofs, maxsz);
type = 0;
if (g->fniv) {
@@ -1483,7 +1492,7 @@ void tcg_gen_gvec_3i(uint32_t dofs, uint32_t aofs, uint32_t bofs,
uint32_t some;
check_size_align(oprsz, maxsz, dofs | aofs | bofs);
check_overlap_3(dofs, aofs, bofs, maxsz);
check_overlap_3(tcg_env, dofs, tcg_env, aofs, tcg_env, bofs, maxsz);
type = 0;
if (g->fniv) {
@@ -1551,7 +1560,8 @@ void tcg_gen_gvec_4(uint32_t dofs, uint32_t aofs, uint32_t bofs, uint32_t cofs,
uint32_t some;
check_size_align(oprsz, maxsz, dofs | aofs | bofs | cofs);
check_overlap_4(dofs, aofs, bofs, cofs, maxsz);
check_overlap_4(tcg_env, dofs, tcg_env, aofs,
tcg_env, bofs, tcg_env, cofs, maxsz);
type = 0;
if (g->fniv) {
@@ -1621,7 +1631,8 @@ void tcg_gen_gvec_4i(uint32_t dofs, uint32_t aofs, uint32_t bofs, uint32_t cofs,
uint32_t some;
check_size_align(oprsz, maxsz, dofs | aofs | bofs | cofs);
check_overlap_4(dofs, aofs, bofs, cofs, maxsz);
check_overlap_4(tcg_env, dofs, tcg_env, aofs,
tcg_env, bofs, tcg_env, cofs, maxsz);
type = 0;
if (g->fniv) {
@@ -3150,7 +3161,7 @@ do_gvec_shifts(unsigned vece, uint32_t dofs, uint32_t aofs, TCGv_i32 shift,
uint32_t some;
check_size_align(oprsz, maxsz, dofs | aofs);
check_overlap_2(dofs, aofs, maxsz);
check_overlap_2(tcg_env, dofs, tcg_env, aofs, maxsz);
/* If the backend has a scalar expansion, great. */
type = choose_vector_type(g->s_list, vece, oprsz, vece == MO_64);
@@ -3770,7 +3781,7 @@ void tcg_gen_gvec_cmp(TCGCond cond, unsigned vece, uint32_t dofs,
uint32_t some;
check_size_align(oprsz, maxsz, dofs | aofs | bofs);
check_overlap_3(dofs, aofs, bofs, maxsz);
check_overlap_3(tcg_env, dofs, tcg_env, aofs, tcg_env, bofs, maxsz);
if (cond == TCG_COND_NEVER || cond == TCG_COND_ALWAYS) {
do_dup(MO_8, tcg_env, dofs, oprsz, maxsz,
@@ -3890,7 +3901,7 @@ void tcg_gen_gvec_cmps(TCGCond cond, unsigned vece, uint32_t dofs,
TCGType type;
check_size_align(oprsz, maxsz, dofs | aofs);
check_overlap_2(dofs, aofs, maxsz);
check_overlap_2(tcg_env, dofs, tcg_env, aofs, maxsz);
if (cond == TCG_COND_NEVER || cond == TCG_COND_ALWAYS) {
do_dup(MO_8, tcg_env, dofs, oprsz, maxsz,