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make -d:nimFpRoundtrips work consistently in vm vs rt, fix #18400, etc (#18531)

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* compiler/vmhooks: add getVar to allow vmops with var params
* addFloat vmops with var param
* cgen now renders float32 literals in c backend using roundtrip float to string
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Timothee Cour 2021-07-20 13:13:52 -07:00 • committed by GitHub
commit cf0cf32d27
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21 changed files with 286 additions and 199 deletions
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compiler/vmops.nim
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@ -27,6 +27,7 @@ from std/md5 import getMD5
from std/times import cpuTime
from std/hashes import hash
from std/osproc import nil
from system/formatfloat import addFloatRoundtrip, addFloatSprintf
from sighashes import symBodyDigest
@ -325,3 +326,13 @@ proc registerAdditionalOps*(c: PCtx) =
registerCallback c, "stdlib.typetraits.hasClosureImpl", proc (a: VmArgs) =
let fn = getNode(a, 0)
setResult(a, fn.kind == nkClosure or (fn.typ != nil and fn.typ.callConv == ccClosure))
registerCallback c, "stdlib.formatfloat.addFloatRoundtrip", proc(a: VmArgs) =
let p = a.getVar(0)
let x = a.getFloat(1)
addFloatRoundtrip(p.strVal, x)
registerCallback c, "stdlib.formatfloat.addFloatSprintf", proc(a: VmArgs) =
let p = a.getVar(0)
let x = a.getFloat(1)
addFloatSprintf(p.strVal, x)