[gcc r12-8330] d: Merge upstream dmd 081d61e15, druntime 9c0d4f91, phobos dba1bbe27.

[gcc r12-8330] d: Merge upstream dmd 081d61e15, druntime 9c0d4f91, phobos dba1bbe27.

[Iain Buclaw]

https://gcc.gnu.org/g:c0b7ecae5f33b11b6a10c9a2345281c7e1eec3f5

commit r12-8330-gc0b7ecae5f33b11b6a10c9a2345281c7e1eec3f5
Author: Iain Buclaw <ibuclaw@gdcproject.org>
Date:   Tue May 3 17:53:08 2022 +0200

    d: Merge upstream dmd 081d61e15, druntime 9c0d4f91, phobos dba1bbe27.
    
    D front-end changes:
    
        - Import dmd v2.100.0-rc.1.
    
    D runtime changes:
    
        - Import druntime v2.100.0-rc.1.
    
    Phobos changes:
    
        - Import v2.100.0-rc.1.
    
    gcc/d/ChangeLog:
    
            * dmd/MERGE: Merge upstream dmd 081d61e15.
            * dmd/VERSION: Update version to v2.100.0-rc.1.
    
    libphobos/ChangeLog:
    
            * libdruntime/MERGE: Merge upstream druntime 9c0d4f91.
            * src/MERGE: Merge upstream phobos dba1bbe27.

Diff:
---
 gcc/d/dmd/MERGE                   |  2 +-
 gcc/d/dmd/VERSION                 |  2 +-
 gcc/d/dmd/cparse.d                | 10 +++++++++-
 gcc/d/dmd/declaration.h           |  3 +++
 gcc/d/dmd/dinterpret.d            | 17 ++++++++++++++---
 gcc/d/dmd/dmangle.d               |  6 +++++-
 gcc/d/dmd/func.d                  | 18 ++++++++++++++++++
 gcc/d/dmd/semantic3.d             |  2 +-
 libphobos/libdruntime/MERGE       |  2 +-
 libphobos/libdruntime/core/simd.d |  2 ++
 libphobos/src/MERGE               |  2 +-
 11 files changed, 56 insertions(+), 10 deletions(-)

diff --git a/gcc/d/dmd/MERGE b/gcc/d/dmd/MERGE
index d18119193d4..984e375479b 100644
--- a/gcc/d/dmd/MERGE
+++ b/gcc/d/dmd/MERGE
@@ -1,4 +1,4 @@
-313d28b3db7523e67880ae3baf8ef28ce9abe9bd
+081d61e157f0064dc93c757d61cd998d3cb5288f
 
 The first line of this file holds the git revision number of the last
 merge done from the dlang/dmd repository.
diff --git a/gcc/d/dmd/VERSION b/gcc/d/dmd/VERSION
index 2450fd55ef8..0ad60f92b8f 100644
--- a/gcc/d/dmd/VERSION
+++ b/gcc/d/dmd/VERSION
@@ -1 +1 @@
-v2.100.0-beta.1
+v2.100.0-rc.1
diff --git a/gcc/d/dmd/cparse.d b/gcc/d/dmd/cparse.d
index 2b2046f3da3..56447869c36 100644
--- a/gcc/d/dmd/cparse.d
+++ b/gcc/d/dmd/cparse.d
@@ -1662,6 +1662,14 @@ final class CParser(AST) : Parser!AST
             return;
         }
 
+        if (!tspec)
+        {
+            error("no type for declarator before `%s`", token.toChars());
+            panic();
+            nextToken();
+            return;
+        }
+
         if (tspec && specifier.mod & MOD.xconst)
         {
             tspec = toConst(tspec);
@@ -2498,7 +2506,7 @@ final class CParser(AST) : Parser!AST
     private AST.Type cparseDeclarator(DTR declarator, AST.Type t,
         out Identifier pident, ref Specifier specifier)
     {
-        //printf("cparseDeclarator(%d)\n", declarator);
+        //printf("cparseDeclarator(%d, %p)\n", declarator, t);
         AST.Types constTypes; // all the Types that will need `const` applied to them
         constTypes.setDim(0);
 
diff --git a/gcc/d/dmd/declaration.h b/gcc/d/dmd/declaration.h
index 441a966cf4d..7e51b057dc1 100644
--- a/gcc/d/dmd/declaration.h
+++ b/gcc/d/dmd/declaration.h
@@ -655,6 +655,7 @@ public:
     bool isNRVO() const;
     void isNRVO(bool v);
     bool isNaked() const;
+    void isNaked(bool v);
     bool isGenerated() const;
     void isGenerated(bool v);
     bool isIntroducing() const;
@@ -664,7 +665,9 @@ public:
     bool hasDualContext() const;
     bool hasAlwaysInlines() const;
     bool isCrtCtor() const;
+    void isCrtCtor(bool v);
     bool isCrtDtor() const;
+    void isCrtDtor(bool v);
 
     virtual bool isNested() const;
     AggregateDeclaration *isThis();
diff --git a/gcc/d/dmd/dinterpret.d b/gcc/d/dmd/dinterpret.d
index 3cfc07ab910..e96f1806982 100644
--- a/gcc/d/dmd/dinterpret.d
+++ b/gcc/d/dmd/dinterpret.d
@@ -674,8 +674,20 @@ private Expression interpretFunction(UnionExp* pue, FuncDeclaration fd, InterSta
         }
     }
     // If fell off the end of a void function, return void
-    if (!e && tf.next.ty == Tvoid)
-        e = CTFEExp.voidexp;
+    if (!e)
+    {
+        if (tf.next.ty == Tvoid)
+            e = CTFEExp.voidexp;
+        else
+        {
+            /* missing a return statement can happen with C functions
+             * https://issues.dlang.org/show_bug.cgi?id=23056
+             */
+            fd.error("no return value from function");
+            e = CTFEExp.cantexp;
+        }
+    }
+
     if (tf.isref && e.op == EXP.variable && e.isVarExp().var == fd.vthis)
         e = thisarg;
     if (tf.isref && fd.hasDualContext() && e.op == EXP.index)
@@ -695,7 +707,6 @@ private Expression interpretFunction(UnionExp* pue, FuncDeclaration fd, InterSta
             }
         }
     }
-    assert(e !is null);
 
     // Leave the function
     --ctfeGlobals.callDepth;
diff --git a/gcc/d/dmd/dmangle.d b/gcc/d/dmd/dmangle.d
index 1f895e03af0..3d9730348f5 100644
--- a/gcc/d/dmd/dmangle.d
+++ b/gcc/d/dmd/dmangle.d
@@ -1335,9 +1335,13 @@ void realToMangleBuffer(OutBuffer* buf, real_t value)
 private
 extern (D) const(char)[] externallyMangledIdentifier(Declaration d)
 {
+    assert(!d.mangleOverride, "mangle overrides should have been handled earlier");
+
     const par = d.toParent(); //toParent() skips over mixin templates
     if (!par || par.isModule() || d.linkage == LINK.cpp ||
-        (d.linkage == LINK.c && d.isCsymbol() && d.isFuncDeclaration()))
+        (d.linkage == LINK.c && d.isCsymbol() &&
+         (d.isFuncDeclaration() ||
+          (d.isVarDeclaration() && d.isDataseg() && d.storage_class & STC.extern_))))
     {
         if (d.linkage != LINK.d && d.localNum)
             d.error("the same declaration cannot be in multiple scopes with non-D linkage");
diff --git a/gcc/d/dmd/func.d b/gcc/d/dmd/func.d
index 8d8395188b6..2e9c2bff1e0 100644
--- a/gcc/d/dmd/func.d
+++ b/gcc/d/dmd/func.d
@@ -1474,6 +1474,12 @@ extern (C++) class FuncDeclaration : Declaration
         return !!(this.flags & FUNCFLAG.naked);
     }
 
+    final void isNaked(bool v) @safe pure nothrow @nogc
+    {
+        if (v) this.flags |= FUNCFLAG.naked;
+        else this.flags &= ~FUNCFLAG.naked;
+    }
+
     final bool isGenerated() const scope @safe pure nothrow @nogc
     {
         return !!(this.flags & FUNCFLAG.generated);
@@ -1520,11 +1526,23 @@ extern (C++) class FuncDeclaration : Declaration
         return !!(this.flags & FUNCFLAG.CRTCtor);
     }
 
+    final void isCrtCtor(bool v) @safe pure nothrow @nogc
+    {
+        if (v) this.flags |= FUNCFLAG.CRTCtor;
+        else this.flags &= ~FUNCFLAG.CRTCtor;
+    }
+
     final bool isCrtDtor() const scope @safe pure nothrow @nogc
     {
         return !!(this.flags & FUNCFLAG.CRTDtor);
     }
 
+    final void isCrtDtor(bool v) @safe pure nothrow @nogc
+    {
+        if (v) this.flags |= FUNCFLAG.CRTDtor;
+        else this.flags &= ~FUNCFLAG.CRTDtor;
+    }
+
     /**************************************
      * The function is doing something that may allocate with the GC,
      * so mark it as not nogc (not no-how).
diff --git a/gcc/d/dmd/semantic3.d b/gcc/d/dmd/semantic3.d
index 511957649f7..2e459b1857f 100644
--- a/gcc/d/dmd/semantic3.d
+++ b/gcc/d/dmd/semantic3.d
@@ -327,7 +327,7 @@ private extern(C++) final class Semantic3Visitor : Visitor
             sc2.scontinue = null;
             sc2.sw = null;
             sc2.fes = funcdecl.fes;
-            sc2.linkage = LINK.d;
+            sc2.linkage = funcdecl.isCsymbol() ? LINK.c : LINK.d;
             sc2.stc &= STC.flowThruFunction;
             sc2.visibility = Visibility(Visibility.Kind.public_);
             sc2.explicitVisibility = 0;
diff --git a/libphobos/libdruntime/MERGE b/libphobos/libdruntime/MERGE
index c94634f4770..9bab8ed6395 100644
--- a/libphobos/libdruntime/MERGE
+++ b/libphobos/libdruntime/MERGE
@@ -1,4 +1,4 @@
-e361d200b287a68344095f306cf5ea3a63c080e1
+9c0d4f914e0817c9ee4eafc5a45c41130aa6b981
 
 The first line of this file holds the git revision number of the last
 merge done from the dlang/druntime repository.
diff --git a/libphobos/libdruntime/core/simd.d b/libphobos/libdruntime/core/simd.d
index 11a47118319..94b230d1493 100644
--- a/libphobos/libdruntime/core/simd.d
+++ b/libphobos/libdruntime/core/simd.d
@@ -480,6 +480,7 @@ version (D_SIMD)
     /*****
     * For "store" operations of the form:
     *    op1 op= op2
+    * such as MOVLPS.
     * Returns:
     *    op2
     * These cannot be marked as pure, as semantic() doesn't check them.
@@ -487,6 +488,7 @@ version (D_SIMD)
     @safe void16 __simd_sto(XMM opcode, void16 op1, void16 op2);
     @safe void16 __simd_sto(XMM opcode, double op1, void16 op2); ///
     @safe void16 __simd_sto(XMM opcode, float op1, void16 op2);  ///
+    @safe void16 __simd_sto(XMM opcode, void16 op1, long op2); ///
 
     ///
     unittest
diff --git a/libphobos/src/MERGE b/libphobos/src/MERGE
index 3218ace50a0..c51d237983d 100644
--- a/libphobos/src/MERGE
+++ b/libphobos/src/MERGE
@@ -1,4 +1,4 @@
-ac296f80cda437483b743f953dc69cb1271c82df
+dba1bbe271a9b2d7f24edeebbc77846e29904e41
 
 The first line of this file holds the git revision number of the last
 merge done from the dlang/phobos repository.