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cranelift: Sign extend immediates in instructions that embed them. (#4602)

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* cranelift: Sign extend immediates in instructions that embed them.

* cranelift: Clarify imm instruction behaviour

* cranelift: Deduplicate imm_const

* cranelift: zero extend logical imm ops
This commit is contained in:
Afonso Bordado
2022-08-15 19:08:20 +01:00
committed by GitHub
parent c6d2a3f94e
commit e577a76c0d
3 changed files with 118 additions and 151 deletions
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10
cranelift/filetests/filetests/runtests/i128-arithmetic.clif
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@@ -56,3 +56,13 @@ block0(v0: i128,v1: i128):
; run: %mul_i128(13, 0x01010101_01010101_01010101_01010101) == 0x0D0D0D0D_0D0D0D0D_0D0D0D0D_0D0D0D0D
; run: %mul_i128(0x00000000_01234567_89ABCDEF_00000000, 0x00000000_FEDCBA98_76543210_00000000) == 0x2236D88F_E5618CF0_00000000_00000000
; run: %mul_i128(0xC0FFEEEE_C0FFEEEE_C0FFEEEE_C0FFEEEE, 0xDECAFFFF_DECAFFFF_DECAFFFF_DECAFFFF) == 0x5ECD38B5_9D1C2B7E_DB6B1E48_19BA1112
; Tests that imm's are sign extended on i128's
; See: https://github.com/bytecodealliance/wasmtime/issues/4568
function %iadd_imm_neg(i128) -> i128 {
block0(v0: i128):
v1 = iadd_imm.i128 v0, -1
return v1
}
; run: %iadd_imm_neg(1) == 0