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review and merge zahary's work (#5849)

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* proper indentation for the generated JS code
* improved dead-code elimination for JavaScript
* test the JS dead-code elimination

A new test spec has been added - "maxcodesize". It specifies the
maximum size of the generated code in bytes.
This commit is contained in:
zah 2017-06-03 13:45:10 +03:00 • committed by Andreas Rumpf
commit 39aef12446
7 changed files with 308 additions and 187 deletions
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12
compiler/cgen.nim
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@ -138,6 +138,13 @@ proc ropecg(m: BModule, frmt: FormatStr, args: varargs[Rope]): Rope =
template rfmt(m: BModule, fmt: string, args: varargs[Rope]): untyped =
ropecg(m, fmt, args)
var indent = "\t".rope
proc indentLine(p: BProc, r: Rope): Rope =
result = r
for i in countup(0, p.blocks.len-1):
prepend(result, indent)
proc appcg(m: BModule, c: var Rope, frmt: FormatStr,
args: varargs[Rope]) =
add(c, ropecg(m, frmt, args))
@ -150,11 +157,6 @@ proc appcg(p: BProc, s: TCProcSection, frmt: FormatStr,
args: varargs[Rope]) =
add(p.s(s), ropecg(p.module, frmt, args))
var indent = "\t".rope
proc indentLine(p: BProc, r: Rope): Rope =
result = r
for i in countup(0, p.blocks.len-1): prepend(result, indent)
proc line(p: BProc, s: TCProcSection, r: Rope) =
add(p.s(s), indentLine(p, r))