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tcg: Fix missing checks and clears in tcg_gen_gvec_dup_mem 

The paths through tcg_gen_dup_mem_vec and through MO_128 were
missing the check_size_align.  The path through MO_128 was also
missing the expand_clr.  This last was not visible because the
only user is ARM SVE, which would set oprsz == maxsz, and not
require the clear.

Fix by adding the check_size_align and using do_dup directly
instead of duplicating the check in tcg_gen_gvec_dup_{i32,i64}.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2019-05-16 12:48:18 -07:00
parent 7b60ef3264
commit 532ba368a1
1 changed files with 25 additions and 23 deletions
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48
tcg/tcg-op-gvec.c
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@ -1446,36 +1446,35 @@ void tcg_gen_gvec_dup_i64(unsigned vece, uint32_t dofs, uint32_t oprsz,
void tcg_gen_gvec_dup_mem(unsigned vece, uint32_t dofs, uint32_t aofs,
uint32_t oprsz, uint32_t maxsz)
{
check_size_align(oprsz, maxsz, dofs);
if (vece <= MO_64) {
TCGType type = choose_vector_type(0, vece, oprsz, 0);
TCGType type = choose_vector_type(NULL, vece, oprsz, 0);
if (type != 0) {
TCGv_vec t_vec = tcg_temp_new_vec(type);
tcg_gen_dup_mem_vec(vece, t_vec, cpu_env, aofs);
do_dup_store(type, dofs, oprsz, maxsz, t_vec);
tcg_temp_free_vec(t_vec);
return;
} else if (vece <= MO_32) {
TCGv_i32 in = tcg_temp_new_i32();
switch (vece) {
case MO_8:
tcg_gen_ld8u_i32(in, cpu_env, aofs);
break;
case MO_16:
tcg_gen_ld16u_i32(in, cpu_env, aofs);
break;
default:
tcg_gen_ld_i32(in, cpu_env, aofs);
break;
}
do_dup(vece, dofs, oprsz, maxsz, in, NULL, 0);
tcg_temp_free_i32(in);
} else {
TCGv_i64 in = tcg_temp_new_i64();
tcg_gen_ld_i64(in, cpu_env, aofs);
do_dup(vece, dofs, oprsz, maxsz, NULL, in, 0);
tcg_temp_free_i64(in);
}
}
if (vece <= MO_32) {
TCGv_i32 in = tcg_temp_new_i32();
switch (vece) {
case MO_8:
tcg_gen_ld8u_i32(in, cpu_env, aofs);
break;
case MO_16:
tcg_gen_ld16u_i32(in, cpu_env, aofs);
break;
case MO_32:
tcg_gen_ld_i32(in, cpu_env, aofs);
break;
}
tcg_gen_gvec_dup_i32(vece, dofs, oprsz, maxsz, in);
tcg_temp_free_i32(in);
} else if (vece == MO_64) {
TCGv_i64 in = tcg_temp_new_i64();
tcg_gen_ld_i64(in, cpu_env, aofs);
tcg_gen_gvec_dup_i64(MO_64, dofs, oprsz, maxsz, in);
tcg_temp_free_i64(in);
} else {
/* 128-bit duplicate. */
/* ??? Dup to 256-bit vector. */
@ -1504,6 +1503,9 @@ void tcg_gen_gvec_dup_mem(unsigned vece, uint32_t dofs, uint32_t aofs,
tcg_temp_free_i64(in0);
tcg_temp_free_i64(in1);
}
if (oprsz < maxsz) {
expand_clr(dofs + oprsz, maxsz - oprsz);
}
}
}