[clang] 2abc336 - [PowerPC] [Clang] Define macros to identify quad-fp semantics

[Qiu Chaofan via cfe-commits]

Author: Qiu Chaofan
Date: 2020-11-12T10:26:13+08:00
New Revision: 2abc33683b2b702c00c366d56c6285fda6d1e436

URL: https://github.com/llvm/llvm-project/commit/2abc33683b2b702c00c366d56c6285fda6d1e436
DIFF: https://github.com/llvm/llvm-project/commit/2abc33683b2b702c00c366d56c6285fda6d1e436.diff

LOG: [PowerPC] [Clang] Define macros to identify quad-fp semantics

We have option -mabi=ieeelongdouble to set current long double to
IEEEquad semantics. Like what GCC does, we need to define
__LONG_DOUBLE_IEEE128__ macro in this case, and __LONG_DOUBLE_IBM128__
if using PPCDoubleDouble.

Reviewed By: steven.zhang

Differential Revision: https://reviews.llvm.org/D90208

Added: 
    

Modified: 
    clang/lib/Basic/Targets/PPC.cpp
    clang/test/CodeGen/ppc64-long-double.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/Basic/Targets/PPC.cpp b/clang/lib/Basic/Targets/PPC.cpp
index 13db564d360d..bafaed7c4caf 100644
--- a/clang/lib/Basic/Targets/PPC.cpp
+++ b/clang/lib/Basic/Targets/PPC.cpp
@@ -122,6 +122,10 @@ void PPCTargetInfo::getTargetDefines(const LangOptions &Opts,
   if (LongDoubleWidth == 128) {
     Builder.defineMacro("__LONG_DOUBLE_128__");
     Builder.defineMacro("__LONGDOUBLE128");
+    if (Opts.PPCIEEELongDouble)
+      Builder.defineMacro("__LONG_DOUBLE_IEEE128__");
+    else
+      Builder.defineMacro("__LONG_DOUBLE_IBM128__");
   }
 
   // Define this for elfv2 (64-bit only) or 64-bit darwin.

diff  --git a/clang/test/CodeGen/ppc64-long-double.cpp b/clang/test/CodeGen/ppc64-long-double.cpp
index a35965f2bf68..4f4929204dfa 100644
--- a/clang/test/CodeGen/ppc64-long-double.cpp
+++ b/clang/test/CodeGen/ppc64-long-double.cpp
@@ -16,6 +16,20 @@
 // RUN: %clang_cc1 -triple powerpc64-linux-musl -emit-llvm -o - -mlong-double-128 %s | \
 // RUN:   FileCheck --check-prefix=IBM128 %s
 
+// Check IBM-quad and IEEE-quad macros are defined.
+// RUN: %clang -E -dM -ffreestanding -target powerpc64le-linux-gnu %s \
+// RUN:   -mabi=ibmlongdouble | FileCheck -check-prefix=CHECK-DEF-IBM128 %s
+// RUN: %clang -E -dM -ffreestanding -target powerpc64le-linux-gnu %s \
+// RUN:   -mabi=ieeelongdouble | FileCheck -check-prefix=CHECK-DEF-IEEE128 %s
+// RUN: %clang -E -dM -ffreestanding -target powerpc64le-linux-gnu %s \
+// RUN:   -mlong-double-64 | FileCheck -check-prefix=CHECK-DEF-F64 %s
+
+// CHECK-DEF-IBM128: #define __LONG_DOUBLE_128__
+// CHECK-DEF-IBM128: #define __LONG_DOUBLE_IBM128__
+// CHECK-DEF-IEEE128: #define __LONG_DOUBLE_128__
+// CHECK-DEF-IEEE128: #define __LONG_DOUBLE_IEEE128__
+// CHECK-DEF-F64-NOT: #define __LONG_DOUBLE_128__
+
 long double x = 0;
 int size = sizeof(x);