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Append link and sret arguments in legalize_signature.

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These special-purpose arguments and return values are only relevant for
the function being compiled, so add a `current` flag to
legalize_signature().

- Add the necessary argument values to the entry block to represent
  the special-purpose arguments.
- Propagate the link and sret arguments to return instructions if the
  legalized signature asks for it.
This commit is contained in:
Jakob Stoklund Olesen
2017-04-19 15:44:17 -07:00
parent c040a495c0
commit 315c858b48
9 changed files with 161 additions and 35 deletions
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18
filetests/isa/riscv/legalize-abi.cton
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@@ -6,11 +6,11 @@ isa riscv
function int_split_args(i64) -> i64 {
ebb0(v0: i64):
; check: $ebb0($(v0l=$V): i32, $(v0h=$V): i32):
; check: $ebb0($(v0l=$V): i32, $(v0h=$V): i32, $(link=$V): i32):
; check: $v0 = iconcat $v0l, $v0h
v1 = iadd_imm v0, 1
; check: $(v1l=$V), $(v1h=$V) = isplit $v1
; check: return $v1l, $v1h
; check: return $v1l, $v1h, $link
return v1
}
@@ -31,7 +31,7 @@ function split_ret_val() {
fn1 = function foo() -> i64
ebb0:
v1 = call fn1()
; check: $ebb0:
; check: $ebb0($(link=$V): i32):
; nextln: $(v1l=$V), $(v1h=$V) = call $fn1()
; check: $v1 = iconcat $v1l, $v1h
jump ebb1(v1)
@@ -46,7 +46,7 @@ function split_ret_val2() {
fn1 = function foo() -> i32, i64
ebb0:
v1, v2 = call fn1()
; check: $ebb0:
; check: $ebb0($(link=$V): i32):
; nextln: $v1, $(v2l=$V), $(v2h=$V) = call $fn1()
; check: $v2 = iconcat $v2l, $v2h
jump ebb1(v1, v2)
@@ -58,11 +58,11 @@ ebb1(v9: i32, v10: i64):
function int_ext(i8, i8 sext, i8 uext) -> i8 uext {
ebb0(v1: i8, v2: i8, v3: i8):
; check: $ebb0($v1: i8, $(v2x=$V): i32, $(v3x=$V): i32):
; check: $ebb0($v1: i8, $(v2x=$V): i32, $(v3x=$V): i32, $(link=$V): i32):
; check: $v2 = ireduce.i8 $v2x
; check: $v3 = ireduce.i8 $v3x
; check: $(v1x=$V) = uextend.i32 $v1
; check: return $v1x
; check: return $v1x, $link
return v1
}
@@ -71,7 +71,7 @@ function ext_ret_val() {
fn1 = function foo() -> i8 sext
ebb0:
v1 = call fn1()
; check: $ebb0:
; check: $ebb0($V: i32):
; nextln: $(rv=$V) = call $fn1()
; check: $v1 = ireduce.i8 $rv
jump ebb1(v1)
@@ -83,7 +83,7 @@ ebb1(v10: i8):
function vector_split_args(i64x4) -> i64x4 {
ebb0(v0: i64x4):
; check: $ebb0($(v0al=$V): i32, $(v0ah=$V): i32, $(v0bl=$V): i32, $(v0bh=$V): i32, $(v0cl=$V): i32, $(v0ch=$V): i32, $(v0dl=$V): i32, $(v0dh=$V): i32):
; check: $ebb0($(v0al=$V): i32, $(v0ah=$V): i32, $(v0bl=$V): i32, $(v0bh=$V): i32, $(v0cl=$V): i32, $(v0ch=$V): i32, $(v0dl=$V): i32, $(v0dh=$V): i32, $(link=$V): i32):
; check: $(v0a=$V) = iconcat $v0al, $v0ah
; check: $(v0b=$V) = iconcat $v0bl, $v0bh
; check: $(v0ab=$V) = vconcat $v0a, $v0b
@@ -99,7 +99,7 @@ ebb0(v0: i64x4):
; check: $(v1c=$V), $(v1d=$V) = vsplit $v1cd
; check: $(v1cl=$V), $(v1ch=$V) = isplit $v1c
; check: $(v1dl=$V), $(v1dh=$V) = isplit $v1d
; check: return $v1al, $v1ah, $v1bl, $v1bh, $v1cl, $v1ch, $v1dl, $v1dh
; check: return $v1al, $v1ah, $v1bl, $v1bh, $v1cl, $v1ch, $v1dl, $v1dh, $link
return v1
}