Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/cpu/x86/vm/x86_32.ad
src/cpu/x86/vm/x86_32.ad
- changeset 4160
- f6badecb7ea7
- parent 4159
- 8e47bac5643a
- child 4164
- d804e148cff8
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replaced
| 4159:8e47bac5643a | 4160:f6badecb7ea7 |
|---|---|
| 1556 } | 1556 } |
| 1557 | 1557 |
| 1558 // Returns true if the high 32 bits of the value is known to be zero. | 1558 // Returns true if the high 32 bits of the value is known to be zero. |
| 1559 bool is_operand_hi32_zero(Node* n) { | 1559 bool is_operand_hi32_zero(Node* n) { |
| 1560 int opc = n->Opcode(); | 1560 int opc = n->Opcode(); |
| 1561 if (opc == Op_LoadUI2L) { | |
| 1562 return true; | |
| 1563 } | |
| 1564 if (opc == Op_AndL) { | 1561 if (opc == Op_AndL) { |
| 1565 Node* o2 = n->in(2); | 1562 Node* o2 = n->in(2); |
| 1566 if (o2->is_Con() && (o2->get_long() & 0xFFFFFFFF00000000LL) == 0LL) { | 1563 if (o2->is_Con() && (o2->get_long() & 0xFFFFFFFF00000000LL) == 0LL) { |
| 1567 return true; | 1564 return true; |
| 1568 } | 1565 } |
| 6150 %} | 6147 %} |
| 6151 ins_pipe(ialu_reg_mem); | 6148 ins_pipe(ialu_reg_mem); |
| 6152 %} | 6149 %} |
| 6153 | 6150 |
| 6154 // Load Unsigned Integer into Long Register | 6151 // Load Unsigned Integer into Long Register |
| 6155 instruct loadUI2L(eRegL dst, memory mem, eFlagsReg cr) %{ | 6152 instruct loadUI2L(eRegL dst, memory mem, immL_32bits mask, eFlagsReg cr) %{ |
| 6156 match(Set dst (LoadUI2L mem)); | 6153 match(Set dst (AndL (ConvI2L (LoadI mem)) mask)); |
| 6157 effect(KILL cr); | 6154 effect(KILL cr); |
| 6158 | 6155 |
| 6159 ins_cost(250); | 6156 ins_cost(250); |
| 6160 format %{ "MOV $dst.lo,$mem\t# uint -> long\n\t" | 6157 format %{ "MOV $dst.lo,$mem\t# uint -> long\n\t" |
| 6161 "XOR $dst.hi,$dst.hi" %} | 6158 "XOR $dst.hi,$dst.hi" %} |
