Coverage Report

Created: 2018-06-21 18:56

/home/travis/build/MoarVM/MoarVM/src/jit/register.h
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/* different places in which we can store stuff */
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typedef enum {
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    MVM_JIT_STORAGE_LOCAL,
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    MVM_JIT_STORAGE_STACK,
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    MVM_JIT_STORAGE_GPR,  /* general purpose register */
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    MVM_JIT_STORAGE_FPR,  /* floating point register */
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    MVM_JIT_STORAGE_NVR   /* non-volatile register */
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}  MVMJitStorageClass;
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/* a reference to a place something is stored */
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typedef struct {
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    MVMJitStorageClass _cls;
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    MVMint32           _pos;
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} MVMJitStorageRef; /* I'll never run out of names for a CONS */
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/* REGISTER REQUIREMENT SPECIFICATION
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 *
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 * The goal is to represent required registers for a tile. I've assumed that 6
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 * bits are sufficient to specify a register number (64 possibilities; for
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 * x86-64 we'd need 16 for GPR, 16 for the FPR, so that'd be 32, and I'm not
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 * 100% sure that using register numbers that way is right for the FPR/GPR
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 * distinction.
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 *
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 * We need to encode two facts:
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 * - this value needs to be in a register
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 * - and that register should be $such
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 *
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 * So we use the following layout:
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 *
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 * +---------------+--------------------------+-------------------------------+
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 * | Used? (1 bit) | Has Requirement? (1 bit) | Required register nr (6 bits) |
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 * +---------------+--------------------------+-------------------------------+
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 *
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 * Which is then repeated four times over an unsgined 32 bit integer. The first
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 * value always specifies the output register, so that we can determine if a
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 * tile has any register output simply by (spec & 1).
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 */
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532k
#define MVM_JIT_REG_MK2(arch,name) arch ## _ ## name
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532k
#define MVM_JIT_REG_MK1(arch,name) MVM_JIT_REG_MK2(arch,name)
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532k
#define MVM_JIT_REG(name) MVM_JIT_REG_MK1(MVM_JIT_ARCH,name)
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#define MVM_JIT_REGISTER_NONE 0
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0
#define MVM_JIT_REGISTER_ANY  1
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#define MVM_JIT_REGISTER_REQUIRE(name) (3 | ((MVM_JIT_REG(name)) << 2))
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#define MVM_JIT_REGISTER_ENCODE(spec,n) ((spec) << (8*(n)))
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8.48M
#define MVM_JIT_REGISTER_FETCH(spec,n) (((spec) >> (8*(n)))&0xff)
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7.25M
#define MVM_JIT_REGISTER_IS_USED(desc) ((desc) & 1)
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7.12M
#define MVM_JIT_REGISTER_HAS_REQUIREMENT(desc) (((desc) & 2) >> 1)
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1.30M
#define MVM_JIT_REGISTER_REQUIREMENT(desc) (((desc) & 0xfc) >> 2)
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void MVM_jit_linear_scan_allocate(MVMThreadContext *tc, MVMJitCompiler *compiler, MVMJitTileList *list);
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void MVM_jit_arch_storage_for_arglist(MVMThreadContext *tc, MVMJitCompiler *compiler,
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                                      MVMJitExprTree *tree, MVMint32 arglist_node,
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                                      MVMJitStorageRef *storage);