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Intel encodings for regspill and regfill.

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These are always SP-based.
This commit is contained in:
Jakob Stoklund Olesen
2017-10-04 17:01:40 -07:00
parent 826d4062fb
commit 73d4bb47c0
8 changed files with 138 additions and 55 deletions
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47
lib/cretonne/meta/isa/intel/recipes.py
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@@ -8,7 +8,8 @@ from cdsl.registers import RegClass
from base.formats import Unary, UnaryImm, Binary, BinaryImm, MultiAry
from base.formats import Trap, Call, IndirectCall, Store, Load
from base.formats import IntCompare, FloatCompare
from base.formats import RegMove, Ternary, Jump, Branch, FuncAddr
from base.formats import Ternary, Jump, Branch, FuncAddr
from base.formats import RegMove, RegSpill, RegFill
from .registers import GPR, ABCD, FPR, GPR8, FPR8, StackGPR32, StackFPR32
from .defs import supported_floatccs
@@ -570,6 +571,28 @@ fspSib32 = TailRecipe(
sink.put4(out_stk0.offset as u32);
''')
# Regspill using RSP-relative addressing.
rsp32 = TailRecipe(
'rsp32', RegSpill, size=6, ins=GPR, outs=(),
emit='''
let dst = StackRef::sp(dst, &func.stack_slots);
let base = stk_base(dst.base);
PUT_OP(bits, rex2(base, src), sink);
modrm_sib_disp32(src, sink);
sib_noindex(base, sink);
sink.put4(dst.offset as u32);
''')
frsp32 = TailRecipe(
'frsp32', RegSpill, size=6, ins=FPR, outs=(),
emit='''
let dst = StackRef::sp(dst, &func.stack_slots);
let base = stk_base(dst.base);
PUT_OP(bits, rex2(base, src), sink);
modrm_sib_disp32(src, sink);
sib_noindex(base, sink);
sink.put4(dst.offset as u32);
''')
#
# Load recipes
#
@@ -656,6 +679,28 @@ ffiSib32 = TailRecipe(
sink.put4(in_stk0.offset as u32);
''')
# Regfill with RSP-relative 32-bit displacement.
rfi32 = TailRecipe(
'rfi32', RegFill, size=6, ins=StackGPR32, outs=(),
emit='''
let src = StackRef::sp(src, &func.stack_slots);
let base = stk_base(src.base);
PUT_OP(bits, rex2(base, dst), sink);
modrm_sib_disp32(dst, sink);
sib_noindex(base, sink);
sink.put4(src.offset as u32);
''')
frfi32 = TailRecipe(
'frfi32', RegFill, size=6, ins=StackFPR32, outs=(),
emit='''
let src = StackRef::sp(src, &func.stack_slots);
let base = stk_base(src.base);
PUT_OP(bits, rex2(base, dst), sink);
modrm_sib_disp32(dst, sink);
sib_noindex(base, sink);
sink.put4(src.offset as u32);
''')
#
# Call/return
#