// accesses (LARL). Operand 0 is the address.
PCREL_WRAPPER,
- // Signed integer and floating-point comparisons. The operands are the
- // two values to compare.
- CMP,
+ // Used in cases where an offset is applied to a TargetGlobalAddress.
+ // Operand 0 is the full TargetGlobalAddress and operand 1 is a
+ // PCREL_WRAPPER for an anchor point. This is used so that we can
+ // cheaply refer to either the full address or the anchor point
+ // as a register base.
+ PCREL_OFFSET,
- // Likewise unsigned integer comparison.
- UCMP,
+ // Integer comparisons. There are three operands: the two values
+ // to compare, and an integer of type SystemZICMP.
+ ICMP,
+
+ // Floating-point comparisons. The two operands are the values to compare.
+ FCMP,
// Test under mask. The first operand is ANDed with the second operand
- // and the condition codes are set on the result.
+ // and the condition codes are set on the result. The third operand is
+ // a boolean that is true if the condition codes need to distinguish
+ // between CCMASK_TM_MIXED_MSB_0 and CCMASK_TM_MIXED_MSB_1 (which the
+ // register forms do but the memory forms don't).
TM,
// Branches if a condition is true. Operand 0 is the chain operand;
// a store prefetch.
PREFETCH
};
+
+ // Return true if OPCODE is some kind of PC-relative address.
+ inline bool isPCREL(unsigned Opcode) {
+ return Opcode == PCREL_WRAPPER || Opcode == PCREL_OFFSET;
+ }
+}
+
+namespace SystemZICMP {
+ // Describes whether an integer comparison needs to be signed or unsigned,
+ // or whether either type is OK.
+ enum {
+ Any,
+ UnsignedOnly,
+ SignedOnly
+ };
}
class SystemZSubtarget;