[PATCH] D85157: [Sema] Add casting check for integer to fixed point conversions

[Vince Bridgers via Phabricator via cfe-commits]

vabridgers created this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.
vabridgers requested review of this revision.

This change squelches the warning for a cast from integer to fixed point
conversions.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D85157

Files:
  clang/lib/Sema/SemaCast.cpp
  clang/test/Sema/warn-bad-function-cast.c


Index: clang/test/Sema/warn-bad-function-cast.c
===================================================================
--- clang/test/Sema/warn-bad-function-cast.c
+++ clang/test/Sema/warn-bad-function-cast.c
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 %s -fsyntax-only -Wno-unused-value -Wbad-function-cast -triple x86_64-unknown-unknown -verify
+// RUN: %clang_cc1 %s -fsyntax-only -Wno-unused-value -Wbad-function-cast -DFIXED_POINT -ffixed-point -triple x86_64-unknown-unknown -verify
 // rdar://9103192
 
 void vf(void);
@@ -43,5 +44,9 @@
   (int)bf(); /* expected-warning {{cast from function call of type '_Bool' to non-matching type 'int'}} */
   (__SIZE_TYPE__)pf1(); /* expected-warning {{cast from function call of type 'char *' to non-matching type 'unsigned long'}} */
   (__PTRDIFF_TYPE__)pf2(); /* expected-warning {{cast from function call of type 'int *' to non-matching type 'long'}} */
+
+#ifdef FIXED_POINT
+  (void)(_Fract) if1(); // no warning
+#endif
 }
 
Index: clang/lib/Sema/SemaCast.cpp
===================================================================
--- clang/lib/Sema/SemaCast.cpp
+++ clang/lib/Sema/SemaCast.cpp
@@ -2657,6 +2657,8 @@
     return;
   if (SrcType->isComplexIntegerType() && DestType->isComplexIntegerType())
     return;
+  if (SrcType->isIntegerType() && DestType->isFixedPointType())
+    return;
 
   Self.Diag(SrcExpr.get()->getExprLoc(),
             diag::warn_bad_function_cast)


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D85157.282716.patch
Type: text/x-patch
Size: 1424 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20200803/0a6f3235/attachment.bin>