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Add unboxed floating point comparison instructions.

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* libguile/vm-engine.c (BR_F64_ARITHMETIC): New preprocessor macro.
(br_if_f64_ee, br_if_f64_lt, br_if_f64_le, br_if_f64_gt, br_if_f64_ge):
New VM instructions.
* doc/ref/vm.texi ("Unboxed Floating-Point Arithmetic"): Document them.
* module/language/cps/compile-bytecode.scm (compile-function): Emit f64
comparison instructions.
* module/language/cps/effects-analysis.scm: Define effects for f64
primcalls.
* module/language/cps/primitives.scm (*branching-primcall-arities*): Add
arities for f64 primcalls.
* module/language/cps/specialize-numbers.scm (specialize-f64-comparison):
New procedure.
(specialize-operations): Specialize f64 comparisons.
* module/system/vm/assembler.scm (emit-br-if-f64-=, emit-br-if-f64-<)
(emit-br-if-f64-<=, emit-br-if-f64->, emit-br-if-f64->=): Export.
* module/system/vm/disassembler.scm (code-annotation): Add annotations
for f64 comparison instructions.
This commit is contained in:
David Thompson 2016-12-12 22:46:08 -05:00 • committed by David Thompson
parent 63bf6ffa0d
commit 35a9059250
9 changed files with 145 additions and 21 deletions
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73
libguile/vm-engine.c
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@ -358,6 +358,24 @@
NEXT (3); \
}
#define BR_F64_ARITHMETIC(crel) \
{ \
scm_t_uint32 a, b; \
scm_t_uint64 x, y; \
UNPACK_24 (op, a); \
UNPACK_24 (ip[1], b); \
x = SP_REF_F64 (a); \
y = SP_REF_F64 (b); \
if ((ip[2] & 0x1) ? !(x crel y) : (x crel y)) \
{ \
scm_t_int32 offset = ip[2]; \
offset >>= 8; /* Sign-extending shift. */ \
NEXT (offset); \
} \
NEXT (3); \
}
#define ARGS1(a1) \
scm_t_uint16 dst, src; \
SCM a1; \
@ -3935,11 +3953,56 @@ VM_NAME (scm_i_thread *thread, struct scm_vm *vp,
NEXT (1);
}
VM_DEFINE_OP (187, unused_187, NULL, NOP)
VM_DEFINE_OP (188, unused_188, NULL, NOP)
VM_DEFINE_OP (189, unused_189, NULL, NOP)
VM_DEFINE_OP (190, unused_190, NULL, NOP)
VM_DEFINE_OP (191, unused_191, NULL, NOP)
/* br-if-f64-= a:12 b:12 invert:1 _:7 offset:24
*
* If the F64 value in A is = to the F64 value in B, add OFFSET, a
* signed 24-bit number, to the current instruction pointer.
*/
VM_DEFINE_OP (187, br_if_f64_ee, "br-if-f64-=", OP3 (X8_S24, X8_S24, B1_X7_L24))
{
BR_F64_ARITHMETIC (==);
}
/* br-if-f64-< a:12 b:12 invert:1 _:7 offset:24
*
* If the F64 value in A is < to the F64 value in B, add OFFSET, a
* signed 24-bit number, to the current instruction pointer.
*/
VM_DEFINE_OP (188, br_if_f64_lt, "br-if-f64-<", OP3 (X8_S24, X8_S24, B1_X7_L24))
{
BR_F64_ARITHMETIC (<);
}
/* br-if-f64-<= a:24 _:8 b:24 invert:1 _:7 offset:24
*
* If the F64 value in A is <= than the F64 value in B, add OFFSET, a
* signed 24-bit number, to the current instruction pointer.
*/
VM_DEFINE_OP (189, br_if_f64_le, "br-if-f64-<=", OP3 (X8_S24, X8_S24, B1_X7_L24))
{
BR_F64_ARITHMETIC (<=);
}
/* br-if-f64-> a:24 _:8 b:24 invert:1 _:7 offset:24
*
* If the F64 value in A is > than the F64 value in B, add OFFSET, a
* signed 24-bit number, to the current instruction pointer.
*/
VM_DEFINE_OP (190, br_if_f64_gt, "br-if-f64->", OP3 (X8_S24, X8_S24, B1_X7_L24))
{
BR_F64_ARITHMETIC (>);
}
/* br-if-uf4->= a:24 _:8 b:24 invert:1 _:7 offset:24
*
* If the F64 value in A is >= than the F64 value in B, add OFFSET, a
* signed 24-bit number, to the current instruction pointer.
*/
VM_DEFINE_OP (191, br_if_f64_ge, "br-if-f64->=", OP3 (X8_S24, X8_S24, B1_X7_L24))
{
BR_F64_ARITHMETIC (>=);
}
VM_DEFINE_OP (192, unused_192, NULL, NOP)
VM_DEFINE_OP (193, unused_193, NULL, NOP)
VM_DEFINE_OP (194, unused_194, NULL, NOP)