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wasmtime/filetests/isa/riscv/expand-i32.cton
Jakob Stoklund Olesen d76280afba Add expansion patterns for large immediates.
Expand foo_imm into iconst + foo.
2016-11-10 15:55:54 -08:00

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; 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=vx?\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: $(cout=$V) = icmp ult, $v3, $v1
; It's possible the legalizer will rewrite these value aliases in the future.
; check: $v4 -> $cout
; 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