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fixes #3916

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This commit is contained in:
Andreas Rumpf 2016-02-29 16:45:52 +01:00
commit 1463b0c954
1 changed files with 4 additions and 4 deletions
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8
compiler/vmgen.nim
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@ -108,8 +108,8 @@ proc gABC(ctx: PCtx; n: PNode; opc: TOpcode; a, b, c: TRegister = 0) =
proc gABI(c: PCtx; n: PNode; opc: TOpcode; a, b: TRegister; imm: BiggestInt) =
# Takes the `b` register and the immediate `imm`, appies the operation `opc`,
# and stores the output value into `a`.
# `imm` is signed and must be within [-127, 128]
if imm >= -127 and imm <= 128:
# `imm` is signed and must be within [-128, 127]
if imm >= -128 and imm <= 127:
let ins = (opc.uint32 or (a.uint32 shl 8'u32) or
(b.uint32 shl 16'u32) or
(imm+byteExcess).uint32 shl 24'u32).TInstr
@ -121,8 +121,8 @@ proc gABI(c: PCtx; n: PNode; opc: TOpcode; a, b: TRegister; imm: BiggestInt) =
proc gABx(c: PCtx; n: PNode; opc: TOpcode; a: TRegister = 0; bx: int) =
# Applies `opc` to `bx` and stores it into register `a`
# `bx` must be signed and in the range [-32767, 32768]
if bx >= -32767 and bx <= 32768:
# `bx` must be signed and in the range [-32768, 32767]
if bx >= -32768 and bx <= 32767:
let ins = (opc.uint32 or a.uint32 shl 8'u32 or
(bx+wordExcess).uint32 shl 16'u32).TInstr
c.code.add(ins)