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* Merge pull request #4590 from som-snytt/issue/6810Lukas Rytz2015-08-242-0/+54
|\ | | | | SI-6810 Disallow EOL in char literal
| * SI-6810 Test for CRSom Snytt2015-06-292-3/+13
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| * SI-6810 Disallow EOL in char literalSom Snytt2015-06-292-0/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's clear that char literals are one-lined like normal string literals. By the same token, pun intended, char literals accept unicode escapes the same as string literals, including `\u000A`. This commit adds the usual exclusions (CR, NL, SU). The spec is outdated in outlawing chars that are not "printable", in particular, the ASCII control codes. The original intention may have been that the ordinary string escapes are required, such as "\b\n". Note that some common escapes are absent, such as "\a".
* | Merge remote-tracking branch 'origin/2.11.x' into ↵Jason Zaugg2015-07-233-1/+9
|\ \ | | | | | | | | | merge/2.11.x-to-2.12.x-20152307
| * \ Merge pull request #4631 from janekdb/2.11.x-typos-t-vSeth Tisue2015-07-201-1/+1
| |\ \ | | | | | | | | Fix 23 typos (t-v)
| | * | Fix 23 typos (t-v)Janek Bogucki2015-07-151-1/+1
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| * | | SI-9401 Avoid SOE with array + missing classtagJason Zaugg2015-07-162-0/+8
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The implicit classtags required by the Array constructor are not expressed in the type signature of its constructor, and instead are summoned by a special case in the typechecker. This special case entails replacing the `new Array` tree with `implicitly[T].newArray(size)`, handled in `ArrayInstantiation`. This tree is recursively typechecked. However, if the implicit materialization/search fails, an error is issued to the current reporter and the original tree is marked with an error type. As above, this is recursively typechecked. In the normal course of affairs, the recursive typecheck of the erroneous tree would be a noop (the tree already has a type!). However, if we are both in silent mode (in which errors are buffered) and in retyping mode (in which the typer clears the type and symbols of trees), we were getting into an cycle. In the enclosed test, retyping mode was trying to recover from: Resetting.this.gencastarray_=(new Array[T](0).<ERROR>) By inserting a suitable a view: implicitly[Resetting => { def gencastarray_=(AT)}]( Resetting.this ).gencastarray_=(new Array[T](0)) Where AT is the type found by retypechecking the argument. It is during the argument retypechecking that we fell into cycle. Crazily enough, in 2.11.0, the ensuing `StackOverflowError` was being caught and treated as a failure. We would then back out of the retyping mode, and issue the error from the the very first attempt at the implicit search. This fragile state of affairs was disrupted by a refactoring to the error reporting system in 725c5c9, after which the SOE crashed the compiler. This commit avoids recursively typechecking error typed trees.
* | | Merge pull request #4616 from som-snytt/issue/9383Seth Tisue2015-07-203-12/+81
|\ \ \ | | | | | | | | SI-9383 Improved unused import warning
| * | | SI-9383 Improved unused import warningSom Snytt2015-07-083-12/+81
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, implicit search would mark every import it touched as a lookup. Instead, let subsequent type check perform the lookup.
* | | | Merge pull request #4622 from retronym/merge/2.11.x-to-2.12.x-20150713Adriaan Moors2015-07-1314-5/+139
|\ \ \ \ | | | | | | | | | | Merge 2.11.x to 2.12.x [ci: last-only]
| * \ \ \ Merge remote-tracking branch 'origin/2.11.x' into ↵Jason Zaugg2015-07-1314-5/+139
| |\ \ \ \ | | |/ / / | |/| / / | | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | merge/2.11.x-to-2.12.x-20150713 Conflicts: src/eclipse/partest/.classpath src/eclipse/repl/.classpath test/files/run/nothingTypeNoFramesNoDce.scala test/files/run/repl-javap-app.check Also fixup two .classpath files with updated partest, xml and parser combinators JARs.
| | * | Fix 27 typos (p-r)Janek Bogucki2015-06-301-1/+1
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| | * | Merge pull request #4569 from retronym/ticket/6985Adriaan Moors2015-06-308-0/+99
| | |\ \ | | | | | | | | | | SI-6895 Test cases to explain the limitations in tcpoly inference
| | | * | SI-8892 Fix incorrect qualification in error messageJason Zaugg2015-06-232-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since beadafa2, we've ended up with nutty error messages for type errors involving aliases that target types in `java.lang` and `scala` packages. I think the intent of that change was to force the error messages to qualify types like `String` when needed, but to leave them unqualified by default. However, this led to this flat out wrong message in the enclosed test. found : B required: C.this.java.lang.B (which expands to) String I've changed the heuristic slightly limit this code to aliases that are eponymous with their targets. Still feels pretty kludgy, but we can at least book a little progress.
| | | * | SI-8777 Avoid redundant disambiguation in error messagesJason Zaugg2015-06-233-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When printing types in error messages, we attempt to disambiguate symbol names by qualifying them in various ways. Type paramters symbols are qualified by adding `(in someMethod)`. However, the type errors generated by higher kinded subtyping can contain clones of type parameter symbols, as creater in `isPolySubType`. The disambiguation tries fruitlessly to distinguish them but ended up adding the same suffix to both names repeatedly. ``` found : [F[_]]Foo[[X(in type L)(in type L)(in type L)(in type L)(in type L)(in type L)(in type L)(in type L)]Bar[F,X(in type L)(in type L)(in type L)(in type L)(in type L)(in type L)(in type L)(in type L)]] required: Foo[[X(in type L)(in type L)(in type L)(in type L)(in type L)(in type L)(in type L)(in type L)]Bar[[X]Or[String,X],X(in type L)(in type L)(in type L)(in type L)(in type L)(in type L)(in type L)(in type L)]] ``` This commit limits the post qualification of type parameter symbols to a single attempt to limit the damage. An alternative might be to mark a clone (we could determine its status by checking whether it is a type parameter of its owner.) But I'm not sure how to present this information in a comphrenensible way, so for now I'm limiting my ambitions to stopping the stutter.
| | | * | SI-6895 Test cases to explain the limitations in tcpoly inferenceJason Zaugg2015-06-234-0/+80
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I've determined that the failure in this bug report boils down to SI-2712. Submitting my working as neg tests for posterity. The type error disabmiguator develops a serious stutter with this example. I'll fix that in the following commit.
| | * | | Merge pull request #4586 from som-snytt/issue/missing-argsSeth Tisue2015-06-293-2/+37
| | |\ \ \ | | | | | | | | | | | | Improved message for missing argument list
| | | * | | Improved message for missing argument listSom Snytt2015-06-273-2/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clarifies the language and rules for eta-expansion. A missing argument in a list, as opposed to a missing argument list, results in a different message. The comical expansion in parens does not attempt to show what was already applied, but succeeds in showing at a glance the shape of the method in question. ``` scala> def m(i: Int, j: Int)(x: Int) = ??? m: (i: Int, j: Int)(x: Int)Nothing scala> m <console>:12: error: missing argument list for method m Unapplied methods are only converted to functions when a function type is expected. You can make this conversion explicit by writing `m _` or `m(_,_)(_)` instead of `m`. m ^ ``` The original submission was due to sschaef and the wording due to adriaanm, with a minor tweak.
| | * | | | Fix 23 typos (m-o)Janek Bogucki2015-06-282-2/+2
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* | | | | Test warnings when an indy cannot be inlinedLukas Rytz2015-07-084-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are two cases tested here - An indyLMF where the lambda body method is private - An indy where the bootstrap method is not LMF
* | | | | Warn when combining settings for the old optimizer with -YGenBCodeLukas Rytz2015-07-035-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove some unnecessary flags files - neg/t4425.flags - run/blame_eye_triple_eee-double.flags - run/blame_eye_triple_eee-float.flags Force tests that use -optimize to GenASM - neg/sealed-final-neg.flags - pos/inline-access-levels.flags - pos/inliner2.flags - pos/sealed-final.flags - pos/t3420.flags - pos/t8410.flags - run/constant-optimization.flags - run/dead-code-elimination.flags - run/elidable-opt.flags - run/finalvar.flags - run/icode-reader-dead-code.scala - run/optimizer-array-load.flags - run/synchronized.flags - run/t3509.flags - run/t3569.flags - run/t4285.flags - run/t4935.flags - run/t5789.scala - run/t6188.flags - run/t7459b-optimize.flags - run/t7582.flags - run/t7582b.flags - run/t8601.flags - run/t8601b.flags - run/t8601c.flags - run/t8601d.flags - run/t8601e.flags - run/t9003.flags Move some tests to the new optimizer - run/classfile-format-51.scala - run/classfile-format-52.scala - run/run-bug4840.flags - run/t2106.flags - run/t6102.flags
* | | | | Set -Xsource to 2.12 by defaultLukas Rytz2015-07-031-0/+1
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* | | | Java parser: default methods in interfaces are not `DEFERRED`Lukas Rytz2015-07-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Java parser should not set the `DEFERRED` flag for default methods or static methods in interfaces. Their bytecode doesn't have it either. Also tightens parsing of Java abstract methods to disallow a method body. Here's the log of how Lukas diagnosed this: ``` quick.bin: ... BUILD FAILED /Users/luc/scala/scala/build.xml:69: The following error occurred while executing this line: ... /Users/luc/scala/scala/build-ant-macros.xml:350: Could not create type mk-bin due to java.lang.BootstrapMethodError: call site initialization exception at java.lang.invoke.CallSite.makeSite(CallSite.java:341) at java.lang.invoke.MethodHandleNatives.linkCallSiteImpl(MethodHandleNatives.java:307) at java.lang.invoke.MethodHandleNatives.linkCallSite(MethodHandleNatives.java:297) at scala.sys.BooleanProp$.keyExists(BooleanProp.scala:72) at scala.sys.SystemProperties$.bool(SystemProperties.scala:78) at scala.sys.SystemProperties$.noTraceSupression$lzycompute(SystemProperties.scala:89) at scala.sys.SystemProperties$.noTraceSupression(SystemProperties.scala:89) at scala.util.control.NoStackTrace$.<init>(NoStackTrace.scala:31) at scala.util.control.NoStackTrace$.<clinit>(NoStackTrace.scala) at scala.util.control.NoStackTrace$class.fillInStackTrace(NoStackTrace.scala:22) at scala.util.control.BreakControl.fillInStackTrace(Breaks.scala:94) at java.lang.Throwable.<init>(Throwable.java:250) at scala.util.control.BreakControl.<init>(Breaks.scala:94) at scala.util.control.Breaks.<init>(Breaks.scala:29) at scala.collection.Traversable$.<init>(Traversable.scala:95) at scala.collection.Traversable$.<clinit>(Traversable.scala) at scala.package$.<init>(package.scala:40) at scala.package$.<clinit>(package.scala) at scala.Predef$.<init>(Predef.scala:89) at scala.Predef$.<clinit>(Predef.scala) at scala.tools.ant.ScalaTool.<init>(ScalaTool.scala:58) [...] Caused by: java.lang.invoke.LambdaConversionException: Incorrect number of parameters for static method invokeStatic scala.sys.BooleanProp$.scala$sys$BooleanProp$$$anonfun$2$adapted:(String)Object; 0 captured parameters, 0 functional interface method parameters, 1 implementation parameters at java.lang.invoke.AbstractValidatingLambdaMetafactory.validateMetafactoryArgs(AbstractValidatingLambdaMetafactory.java:193) at java.lang.invoke.LambdaMetafactory.altMetafactory(LambdaMetafactory.java:473) at java.lang.invoke.CallSite.makeSite(CallSite.java:325) ``` [source code](https://github.com/scala/scala/blob/2.11.x/src/library/scala/sys/BooleanProp.scala#L72): ``` s => s == "" || s.equalsIgnoreCase("true") ``` bytecode: ``` INVOKEDYNAMIC $init$()Lscala/compat/java8/JFunction1; [ // handle kind 0x6 : INVOKESTATIC java/lang/invoke/LambdaMetafactory.altMetafactory(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;[Ljava/lang/Object;)Ljava/lang/invoke/CallSite; // arguments: ()V, // handle kind 0x6 : INVOKESTATIC scala/sys/BooleanProp$.scala$sys$BooleanProp$$$anonfun$2$adapted(Ljava/lang/String;)Ljava/lang/Object;, (Ljava/lang/String;)Ljava/lang/Object;, 3, 1, Lscala/Serializable;.class, 0 ] CHECKCAST scala/Function1 ``` The mistake seems to be that the Scala compiler incorrectly selects `$init$` ([which is a default method](https://github.com/scala/scala/blob/640ffe7fceb5d573b2c12a7c7da09bfd751036a0/src/library/scala/compat/java8/JFunction1.java#L10)) as the abstract method of `JFunction1`, whereas it should be `apply` (inherited from `Function1`). Since we're doing mixed compilation, this is almost certainly a problem of the Java parser.
* | | | Merge commit 'bb102e7' into merge-2.11-to-2.12-june-26Lukas Rytz2015-06-261-1/+1
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| * | Fix 8 typos (j-l)Janek Bogucki2015-06-231-1/+1
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* | | Merge branch '2.11.x' into merge/2.11.x-to-2.12.x-20150624Jason Zaugg2015-06-2419-33/+80
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| * | Fix 25 typos (g-i)Janek Bogucki2015-06-221-1/+1
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| * | Fix 36 typos (d-f)Janek Bogucki2015-06-213-3/+3
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| * Fix another several typosMichał Pociecha2015-06-182-2/+2
| | | | | | | | | | | | I just used text search to check whether there are no more typos like these corrected by janekdb, and by the way fixed also some other ones which I saw.
| * Fix some typos (a-c)Janek Bogucki2015-06-182-4/+4
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| * Merge pull request #4519 from lrytz/opt/nullness-2.11Jason Zaugg2015-06-072-3/+3
| |\ | | | | | | Nullness Analysis for GenBCode
| | * Enable nullness analysis in the inlinerLukas Rytz2015-05-252-3/+3
| | | | | | | | | | | | | | | | | | | | | When inlining an instance call, the inliner has to ensure that a NPE is still thrown if the receiver object is null. By using the nullness analysis, we can avoid emitting this code in case the receiver object is known to be not-null.
| * | SI-9343 Xlint less strict on pattern sequencesSom Snytt2015-06-032-19/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -Xlint:stars-align warns only if elementarity > 0, that is, if an extracted sequence is not matched entirely by a pattern sequence, that is, in SLS 8.1.9 on pattern sequences, n = 1 and that pattern is a pattern sequence. This is still only triggered if productarity > 0, that is, a non-pattern-sequence pattern is required for the match. This is a sensitive area because it borders on exhaustiveness checking: it would be preferable to verify just that the match is exhaustive, and to emit this warning only if it is not.
| * | Fix several tests under GenBCodeLukas Rytz2015-05-261-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - private-inline, t8601-closure-elim, inline-in-constructors - test closure inlining / elimination, which is not yet implemented in GenBCode. noted in https://github.com/scala-opt/scala/issues/14. - constant-optimization, t7006 - no constant folding in GenBCode yet. noted in https://github.com/scala-opt/scala/issues/29. - patmat_opt_ignore_underscore, patmat_opt_no_nullcheck, patmat_opt_primitive_typetest - not all optimizations in GenBCode yet. noted in https://github.com/scala-opt/scala/issues/30. - t3234 - tests a warning of trait inlining - trait inlining works in GenBCode - synchronized - ignore inliner warnings (they changed a bit) - t6102 - account for the changed outputo of -Ydebug has under GenBCode
| * SI-9286 Check subclass privates for "same type after erasure"Jason Zaugg2015-05-186-0/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The overriding pairs cursor used to detect erased signature clashes was turning a blind eye to any pair that contained a private method. However, this could lead to a `VerifyError` or `IllegalAccessError`. Checking against javac's behaviour in both directions: ``` % cat sandbox/Test.java public abstract class Test { class C { int foo() { return 0; } } class D extends C { private <A> int foo() { return 1; } } } % javac sandbox/Test.java sandbox/Test.java:3: error: name clash: <A>foo() in Test.D and foo() in Test.C have the same erasure, yet neither overrides the other class D extends C { private <A> int foo() { return 1; } } ^ where A is a type-variable: A extends Object declared in method <A>foo() 1 error ``` ``` % cat sandbox/Test.java public abstract class Test { class C { private int foo() { return 0; } } class D extends C { <A> int foo() { return 1; } } } % javac sandbox/Test.java % ``` This commit only the exludes private symbols from the superclass from the checks by moving the test from `excludes` to `matches`.
* | Require and target Java 8Jason Zaugg2015-05-264-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Require Java 8 in ant build - use -source 1.8 and -target 1.8 for javac - Default scalac's -target to `jvm-1.8`, ignore and deprecate attempts to use `jvm-1.{6.7}` - Remove fragile javap-app test. The feature itself is slated for removal. - Remove obsolete Java6 checkfile - Adapt DCE tests - Remove deprecated/redundant -target:jvm-1.6 from flags where the intent was to trigger generation of stack map frames. - Remove tests with -target:jvm-1.5 that tested without stack map frames - Ignore OpenJDK JVM warnings (via test/[files|scaladoc]/filters).
* | Optimize `implicit def Predef.<???>ArrayOps`xuwei-k2015-05-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove object allocation overhead by peeling off abstraction layer, revealing that the `ArrayOps` implicit conversions in `Predef` return value classes. d3f879a6b0 turned `ArrayOps.of<???>` into value classes, but the non-`AnyVal` result type of the corresponding `<???>arrayOps` implicit conversions (`ArrayOps[_]`) caused boxing anyway. The optimized versions are introduced under a new name, so that the old ones (without `implicit`) can be kept for binary compatibility, for now.
* | Merge commit '1b7e660' into merge-2.11-may-12Lukas Rytz2015-05-123-0/+40
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| * Move test files to the right place.Gerard Basler2015-05-033-0/+40
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* | Merge commit '555f8f0' into merge/2.11-to-2.12-apr-21Lukas Rytz2015-04-215-0/+833
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| * SI-9273 Avoid unpositioned error for bare classOfJason Zaugg2015-04-152-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A bare identifier `classOf` in a position wth an expected type of `Class[_]` was leading to an unpositioned error. This is due to special treatment of bare `classOf` in `typedIdent` creating an ephemeral, but unpositioned, `TypeTree`. This commit positions that tree and tests that the error is issued at a sensible position. There is still an irregularity between `classOf` and `Predef.classOf`, but that seems esoteric enough to leave alone for now.
| * Merge pull request #4431 from adriaanm/rebase-4379Adriaan Moors2015-04-133-0/+814
| |\ | | | | | | Patmat: efficient reasoning about mutual exclusion
| | * Patmat: efficient reasoning about mutual exclusionGerard Basler2015-04-063-0/+814
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Faster analysis of wide (but relatively flat) class hierarchies by using a more efficient encoding of mutual exclusion. The old CNF encoding for mutually exclusive symbols of a domain added a quadratic number of clauses to the formula to satisfy. E.g. if a domain has the symbols `a`, `b` and `c` then the clauses ``` !a \/ !b /\ !a \/ !c /\ !b \/ !c ``` were added. The first line prevents that `a` and `b` are both true at the same time, etc. There's a simple, more efficient encoding that can be used instead: consider a comparator circuit in hardware, that checks that out of `n` signals, at most 1 is true. Such a circuit can be built in the form of a sequential counter and thus requires only 3n-4 additional clauses [1]. A comprehensible comparison of different encodings can be found in [2]. [1]: http://www.carstensinz.de/papers/CP-2005.pdf [2]: http://www.wv.inf.tu-dresden.de/Publications/2013/report-13-04.pdf
* | | Merge commit 'fedbfd7' into merge/2.11-to-2.12-apr-21Lukas Rytz2015-04-216-5/+23
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| * | Error message improvementesfandiar amirrahimi2015-04-082-4/+4
| | | | | | | | | | | | 'may be not be' -> 'may not be'
| * | Merge pull request #4413 from lrytz/opt/inliningEverythingLukas Rytz2015-04-074-1/+19
| |\ \ | | |/ | |/| Fixes and Improvements for the new inliner
| | * Don't inlinie if the resulting method becomes too large for the JVMLukas Rytz2015-04-013-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | This threshold is really the last resort and should never be reached. An inlining heuristic that blows up methods to the maximum size allowed by the JVM is broken. In the future we need to include some heuristic about code size when making an inlining decision, see github.com/scala-opt/scala/issues/2
| | * Don't force the GenASM backend when passing -optimizeLukas Rytz2015-04-011-1/+1
| | | | | | | | | | | | | | | | | | This behavior is confusing and also problematic for writing partest tests: CI passes -optimize, which negates the -Ybackend:GenBCode entry in a flags file.
* | | Merge commit '32f520f' into merge/2.11-to-2.12-apr-1Lukas Rytz2015-04-0112-38/+65
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| * | Merge pull request #4418 from lrytz/t8731-relaxAdriaan Moors2015-03-311-4/+1
| |\ \ | | |/ | |/| SI-8731 don't issue a @switch warning for two-case matches