HQC trim excessive stack allocation

jschanck · Apr 1, 2021 · 9c4e109 · 9c4e109
1 parent a55f514
commit 9c4e109
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Showing 3 changed files with 3 additions and 3 deletions.
diff --git a/hqc/patches/Optimized_Implementation_hqc-rmrs-128_src_gf2x.c b/hqc/patches/Optimized_Implementation_hqc-rmrs-128_src_gf2x.c
@@ -319,7 +319,7 @@
   */
 -void vect_mul(uint64_t *o, const uint64_t *a1, const uint64_t *a2) {
 +void vect_mul(uint64_t *o, const aligned_vec_t *a1, const aligned_vec_t *a2) {
-+	__m256i a1_times_a2[2 * PARAM_N_MULT + 1] = {0};
++	__m256i a1_times_a2[CEIL_DIVIDE(2 * PARAM_N_MULT + 1, 256)] = {0};
  	karat_mult9(a1_times_a2, a1, a2);
  	reduce(o, a1_times_a2);
 -

diff --git a/hqc/patches/Optimized_Implementation_hqc-rmrs-192_src_gf2x.c b/hqc/patches/Optimized_Implementation_hqc-rmrs-192_src_gf2x.c
@@ -398,7 +398,7 @@
   */
 -void vect_mul(uint64_t *o, const uint64_t *a1, const uint64_t *a2) {
 +void vect_mul(uint64_t *o, const aligned_vec_t *a1, const aligned_vec_t *a2) {
-+	__m256i a1_times_a2[2 * PARAM_N_MULT + 1] = {0};
++	__m256i a1_times_a2[CEIL_DIVIDE(2 * PARAM_N_MULT + 1, 256)] = {0};
  	karat_mult9(a1_times_a2, a1, a2);
  	reduce(o, a1_times_a2);
 -

diff --git a/hqc/patches/Optimized_Implementation_hqc-rmrs-256_src_gf2x.c b/hqc/patches/Optimized_Implementation_hqc-rmrs-256_src_gf2x.c
@@ -436,7 +436,7 @@
 -void vect_mul(uint64_t *o, const uint64_t *a1, const uint64_t *a2) {	
 -	toom_3_mult(a1_times_a2, a1, a2);
 +void vect_mul(uint64_t *o, const aligned_vec_t *a1, const aligned_vec_t *a2) {
-+	__m256i a1_times_a2[VEC_N_256_SIZE_64 << 1] = {0};
++	__m256i a1_times_a2[CEIL_DIVIDE(2*PARAM_N_MULT + 1,256)] = {0};
 +	toom_3_mult((uint64_t *)a1_times_a2, a1, a2);
  	reduce(o, a1_times_a2);
 -