Use __FILE__ for Cmm assertion locations, fix #8619

It seems like we currently support string literals in Cmm, so we can use
__LINE__ CPP macro in assertion macros. This improves error messages
that previously looked like

    ASSERTION FAILED: file (null), line 1302

(null) part now shows the actual file name.

Also inline some single-use string literals in PrimOps.cmm.

Reviewers: bgamari, simonmar, erikd

Reviewed By: bgamari

Subscribers: rwbarton, thomie, carter

Differential Revision: https://phabricator.haskell.org/D4862

3 files changed, 7 insertions, 18 deletions

diff --git a/compiler/cmm/CmmParse.y b/compiler/cmm/CmmParse.y
index 2113f20a0f..4d7e288381 100644
--- a/compiler/cmm/CmmParse.y
+++ b/compiler/cmm/CmmParse.y
@@ -402,8 +402,6 @@ statics :: { [CmmParse [CmmStatic]] }
         : {- empty -}                   { [] }
         | static statics                { $1 : $2 }
     
--- Strings aren't used much in the RTS HC code, so it doesn't seem
--- worth allowing inline strings.  C-- doesn't allow them anyway.
 static  :: { CmmParse [CmmStatic] }
         : type expr ';' { do e <- $2;
                              return [CmmStaticLit (getLit e)] }
diff --git a/includes/Cmm.h b/includes/Cmm.h
index 1306a2222d..059220a813 100644
--- a/includes/Cmm.h
+++ b/includes/Cmm.h
@@ -211,7 +211,7 @@
         if (predicate) {                        \
             /*null*/;                           \
         } else {                                \
-            foreign "C" _assertFail(NULL, __LINE__) never returns; \
+            foreign "C" _assertFail(__FILE__, __LINE__) never returns; \
         }
 #else
 #define ASSERT(p) /* nothing */
diff --git a/rts/PrimOps.cmm b/rts/PrimOps.cmm
index 6986d9b527..6081fabe93 100644
--- a/rts/PrimOps.cmm
+++ b/rts/PrimOps.cmm
@@ -646,8 +646,6 @@ stg_atomicModifyMutVarzh ( gcptr mv, gcptr f )
    Weak Pointer Primitives
    -------------------------------------------------------------------------- */
 
-STRING(stg_weak_msg,"New weak pointer at %p\n")
-
 stg_mkWeakzh ( gcptr key,
                gcptr value,
                gcptr finalizer /* or stg_NO_FINALIZER_closure */ )
@@ -670,7 +668,7 @@ stg_mkWeakzh ( gcptr key,
         Capability_weak_ptr_list_tl(MyCapability()) = w;
     }
 
-    IF_DEBUG(weak, ccall debugBelch(stg_weak_msg,w));
+    IF_DEBUG(weak, ccall debugBelch("New weak pointer at %p\n",w));
 
     return (w);
 }
@@ -680,8 +678,6 @@ stg_mkWeakNoFinalizzerzh ( gcptr key, gcptr value )
     jump stg_mkWeakzh (key, value, stg_NO_FINALIZER_closure);
 }
 
-STRING(stg_cfinalizer_msg,"Adding a finalizer to %p\n")
-
 stg_addCFinalizzerToWeakzh ( W_ fptr,   // finalizer
                              W_ ptr,
                              W_ flag,   // has environment (0 or 1)
@@ -715,7 +711,7 @@ stg_addCFinalizzerToWeakzh ( W_ fptr,   // finalizer
 
     recordMutable(w);
 
-    IF_DEBUG(weak, ccall debugBelch(stg_cfinalizer_msg,w));
+    IF_DEBUG(weak, ccall debugBelch("Adding a finalizer to %p\n",w));
 
     return (1);
 }
@@ -2037,8 +2033,6 @@ stg_waitWritezh ( W_ fd )
 #endif
 }
 
-
-STRING(stg_delayzh_malloc_str, "stg_delayzh")
 stg_delayzh ( W_ us_delay )
 {
 #if defined(mingw32_HOST_OS)
@@ -2059,7 +2053,7 @@ stg_delayzh ( W_ us_delay )
 
     /* could probably allocate this on the heap instead */
     ("ptr" ares) = ccall stgMallocBytes(SIZEOF_StgAsyncIOResult,
-                                        stg_delayzh_malloc_str);
+                                        "stg_delayzh");
     (reqID) = ccall addDelayRequest(us_delay);
     StgAsyncIOResult_reqID(ares)   = reqID;
     StgAsyncIOResult_len(ares)     = 0;
@@ -2104,7 +2098,6 @@ while:
 
 
 #if defined(mingw32_HOST_OS)
-STRING(stg_asyncReadzh_malloc_str, "stg_asyncReadzh")
 stg_asyncReadzh ( W_ fd, W_ is_sock, W_ len, W_ buf )
 {
     W_ ares;
@@ -2119,7 +2112,7 @@ stg_asyncReadzh ( W_ fd, W_ is_sock, W_ len, W_ buf )
 
     /* could probably allocate this on the heap instead */
     ("ptr" ares) = ccall stgMallocBytes(SIZEOF_StgAsyncIOResult,
-                                        stg_asyncReadzh_malloc_str);
+                                        "stg_asyncReadzh");
     (reqID) = ccall addIORequest(fd, 0/*FALSE*/,is_sock,len,buf "ptr");
     StgAsyncIOResult_reqID(ares)   = reqID;
     StgAsyncIOResult_len(ares)     = 0;
@@ -2130,7 +2123,6 @@ stg_asyncReadzh ( W_ fd, W_ is_sock, W_ len, W_ buf )
 #endif
 }
 
-STRING(stg_asyncWritezh_malloc_str, "stg_asyncWritezh")
 stg_asyncWritezh ( W_ fd, W_ is_sock, W_ len, W_ buf )
 {
     W_ ares;
@@ -2144,7 +2136,7 @@ stg_asyncWritezh ( W_ fd, W_ is_sock, W_ len, W_ buf )
     StgTSO_why_blocked(CurrentTSO) = BlockedOnWrite::I16;
 
     ("ptr" ares) = ccall stgMallocBytes(SIZEOF_StgAsyncIOResult,
-                                        stg_asyncWritezh_malloc_str);
+                                        "stg_asyncWritezh");
     (reqID) = ccall addIORequest(fd, 1/*TRUE*/,is_sock,len,buf "ptr");
 
     StgAsyncIOResult_reqID(ares)   = reqID;
@@ -2156,7 +2148,6 @@ stg_asyncWritezh ( W_ fd, W_ is_sock, W_ len, W_ buf )
 #endif
 }
 
-STRING(stg_asyncDoProczh_malloc_str, "stg_asyncDoProczh")
 stg_asyncDoProczh ( W_ proc, W_ param )
 {
     W_ ares;
@@ -2171,7 +2162,7 @@ stg_asyncDoProczh ( W_ proc, W_ param )
 
     /* could probably allocate this on the heap instead */
     ("ptr" ares) = ccall stgMallocBytes(SIZEOF_StgAsyncIOResult,
-                                        stg_asyncDoProczh_malloc_str);
+                                        "stg_asyncDoProczh");
     (reqID) = ccall addDoProcRequest(proc "ptr",param "ptr");
     StgAsyncIOResult_reqID(ares)   = reqID;
     StgAsyncIOResult_len(ares)     = 0;