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8372641: [s390x] Test failure TestMergeStores.java

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Reviewed-by: mhaessig, amitkumar, lucy
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Harshit470250 2025-12-09 04:59:53 +00:00 committed by Amit Kumar
parent c9ab330b7b
commit 35fe0b1101
1 changed files with 34 additions and 0 deletions
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34
src/hotspot/cpu/s390/s390.ad
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@ -1715,6 +1715,8 @@ bool Matcher::match_rule_supported(int opcode) {
switch (opcode) {
case Op_ReverseBytesI:
case Op_ReverseBytesL:
case Op_ReverseBytesS:
case Op_ReverseBytesUS:
return UseByteReverseInstruction;
case Op_PopCountI:
case Op_PopCountL:
@ -11615,6 +11617,38 @@ instruct vround2D_reg(vecX dst, vecX src, immI8 rmode) %{
// Byte reverse
instruct bytes_reverse_short(iRegI dst, iRegI src) %{
match(Set dst (ReverseBytesS src));
predicate(UseByteReverseInstruction);
ins_cost(2 * DEFAULT_COST);
size(8);
format %{ "LRVR $dst, $src\n\t # byte reverse int"
"SRA $dst, 0x0010\t # right shift by 16, sign extended" %}
ins_encode %{
__ z_lrvr($dst$$Register, $src$$Register);
__ z_sra($dst$$Register, 0x0010);
%}
ins_pipe(pipe_class_dummy);
%}
instruct bytes_reverse_unsigned_short(iRegI dst, iRegI src) %{
match(Set dst (ReverseBytesUS src));
predicate(UseByteReverseInstruction);
ins_cost(2 * DEFAULT_COST);
size(8);
format %{ "LRVR $dst, $src\n\t # byte reverse int"
"SRL $dst, 0x0010\t # right shift by 16, zero extended" %}
ins_encode %{
__ z_lrvr($dst$$Register, $src$$Register);
__ z_srl($dst$$Register, 0x0010);
%}
ins_pipe(pipe_class_dummy);
%}
instruct bytes_reverse_int(iRegI dst, iRegI src) %{
match(Set dst (ReverseBytesI src));
predicate(UseByteReverseInstruction); // See Matcher::match_rule_supported