3ae0fe6e2b
Now that we can detach and reuse all values, there is no longer a need to create a lot of alias values during pattern expansion. Instead, reuse the values from the source pattern when emitting instructions in the destination pattern. If a destination instruction produces the exact same values as a source instruction, simply leave the values attached and replace the instruction it. Otherwise, detach the source values, reuse them in the expansion, and remove the source instruction afterwards.
31 lines
692 B
Plaintext
31 lines
692 B
Plaintext
; Test the legalization of i32 instructions that don't have RISC-V versions.
|
|
test legalizer
|
|
|
|
set is_64bit=0
|
|
isa riscv supports_m=1
|
|
|
|
set is_64bit=1
|
|
isa riscv supports_m=1
|
|
|
|
; regex: V=v\d+
|
|
|
|
function carry_out(i32, i32) -> i32, b1 {
|
|
ebb0(v1: i32, v2: i32):
|
|
v3, v4 = iadd_cout v1, v2
|
|
return v3, v4
|
|
}
|
|
; check: $v3 = iadd $v1, $v2
|
|
; check: $v4 = icmp ult $v3, $v1
|
|
; check: return $v3, $v4
|
|
|
|
; Expanding illegal immediate constants.
|
|
; Note that at some point we'll probably expand the iconst as well.
|
|
function large_imm(i32) -> i32 {
|
|
ebb0(v0: i32):
|
|
v1 = iadd_imm v0, 1000000000
|
|
return v1
|
|
}
|
|
; check: $(cst=$V) = iconst.i32 0x3b9a_ca00
|
|
; check: $v1 = iadd $v0, $cst
|
|
; check: return $v1
|