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8202425: [s390] C2: Wrong unsigned comparison with 0

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Remove wrong node compU_reg_imm0. Other node is already available.

Reviewed-by: shade, lucy
This commit is contained in:
Martin Doerr 2018-05-02 10:47:16 +02:00
parent e7ef03dce6
commit d78303222b
1 changed files with 0 additions and 10 deletions
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src/hotspot/cpu/s390/s390.ad
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@ -8401,16 +8401,6 @@ instruct compU_reg_uimm(flagsReg cr, iRegI op1, uimmI op2) %{
ins_pipe(pipe_class_dummy); ins_pipe(pipe_class_dummy);
%} %}
instruct compU_reg_imm0(flagsReg cr, iRegI op1, immI_0 zero) %{
match(Set cr (CmpU op1 zero));
ins_cost(DEFAULT_COST_LOW);
size(2);
format %{ "LTR $op1,$op1\t # unsigned" %}
opcode(LTR_ZOPC);
ins_encode(z_rrform(op1, op1));
ins_pipe(pipe_class_dummy);
%}
instruct compU_reg_mem(flagsReg cr, iRegI op1, memory op2)%{ instruct compU_reg_mem(flagsReg cr, iRegI op1, memory op2)%{
match(Set cr (CmpU op1 (LoadI op2))); match(Set cr (CmpU op1 (LoadI op2)));
ins_cost(MEMORY_REF_COST); ins_cost(MEMORY_REF_COST);