1.1 --- a/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp Thu Feb 27 05:40:59 2020 +0000
1.2 +++ b/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp Thu Feb 27 05:58:53 2020 +0000
1.3 @@ -233,8 +233,8 @@
1.4 }
1.5
1.6
1.7 -bool LIRGenerator::strength_reduce_multiply(LIR_Opr left, int c, LIR_Opr result, LIR_Opr tmp) {
1.8 - if (tmp->is_valid()) {
1.9 +bool LIRGenerator::strength_reduce_multiply(LIR_Opr left, jint c, LIR_Opr result, LIR_Opr tmp) {
1.10 + if (tmp->is_valid() && c > 0 && c < max_jint) {
1.11 if (is_power_of_2(c + 1)) {
1.12 __ move(left, tmp);
1.13 __ shift_left(left, log2_jint(c + 1), left);
1.14 @@ -602,8 +602,8 @@
1.15 bool use_constant = false;
1.16 bool use_tmp = false;
1.17 if (right_arg->is_constant()) {
1.18 - int iconst = right_arg->get_jint_constant();
1.19 - if (iconst > 0) {
1.20 + jint iconst = right_arg->get_jint_constant();
1.21 + if (iconst > 0 && iconst < max_jint) {
1.22 if (is_power_of_2(iconst)) {
1.23 use_constant = true;
1.24 } else if (is_power_of_2(iconst - 1) || is_power_of_2(iconst + 1)) {
