diff options
Diffstat (limited to 'compiler/vmgen.nim')
| -rw-r--r-- | compiler/vmgen.nim | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/compiler/vmgen.nim b/compiler/vmgen.nim index 9a16bd5b9..8863b2dc9 100644 --- a/compiler/vmgen.nim +++ b/compiler/vmgen.nim @@ -682,6 +682,7 @@ proc genUnaryABI(c: PCtx; n: PNode; dest: var TDest; opc: TOpcode; imm: BiggestI c.gABI(n, opc, dest, tmp, imm) c.freeTemp(tmp) + proc genBinaryABC(c: PCtx; n: PNode; dest: var TDest; opc: TOpcode) = let tmp = c.genx(n.sons[1]) @@ -999,22 +1000,15 @@ proc genMagic(c: PCtx; n: PNode; dest: var TDest; m: TMagic) = of mMulF64: genBinaryABC(c, n, dest, opcMulFloat) of mDivF64: genBinaryABC(c, n, dest, opcDivFloat) of mShrI: - # the idea here is to narrow type if needed before executing right shift - # inlined modified: genNarrowU(c, n, dest) - let t = skipTypes(n.typ, abstractVar-{tyTypeDesc}) - # uint is uint64 in the VM, we we only need to mask the result for - # other unsigned types: + # modified: genBinaryABC(c, n, dest, opcShrInt) + # narrowU is applied to the left operandthe idea here is to narrow the left operand let tmp = c.genx(n.sons[1]) - if t.kind in {tyUInt8..tyUInt32, tyInt8..tyInt32}: - c.gABC(n, opcNarrowU, tmp, TRegister(t.size*8)) - - # inlined modified: genBinaryABC(c, n, dest, opcShrInt) + c.genNarrowU(n, tmp) let tmp2 = c.genx(n.sons[2]) if dest < 0: dest = c.getTemp(n.typ) c.gABC(n, opcShrInt, dest, tmp, tmp2) c.freeTemp(tmp) c.freeTemp(tmp2) - of mShlI: genBinaryABC(c, n, dest, opcShlInt) # genNarrowU modified |