[PATCH] D114425: [clang] Add __builtin_bswap128
Nikolas Klauser via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Sun Dec 19 05:22:10 PST 2021
philnik updated this revision to Diff 395319.
philnik added a comment.
Added constexpr test
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D114425/new/
https://reviews.llvm.org/D114425
Files:
clang/docs/ReleaseNotes.rst
clang/include/clang/Basic/Builtins.def
clang/lib/AST/ExprConstant.cpp
clang/lib/CodeGen/CGBuiltin.cpp
clang/test/CodeGen/builtins.cpp
clang/test/Sema/constant-builtins-2.c
Index: clang/test/Sema/constant-builtins-2.c
===================================================================
--- clang/test/Sema/constant-builtins-2.c
+++ clang/test/Sema/constant-builtins-2.c
@@ -216,6 +216,7 @@
int h3 = __builtin_bswap16(0x1234) == 0x3412 ? 1 : f();
int h4 = __builtin_bswap32(0x1234) == 0x34120000 ? 1 : f();
int h5 = __builtin_bswap64(0x1234) == 0x3412000000000000 ? 1 : f();
+int h6 = __builtin_bswap128(0x1234) == (((__int128)0x3412) << 112) ? 1 : f();
extern long int bi0;
extern __typeof__(__builtin_expect(0, 0)) bi0;
Index: clang/test/CodeGen/builtins.cpp
===================================================================
--- clang/test/CodeGen/builtins.cpp
+++ clang/test/CodeGen/builtins.cpp
@@ -20,6 +20,10 @@
decltype(__builtin_bswap32(0)) bswap32 = 42;
extern uint64_t bswap64;
decltype(__builtin_bswap64(0)) bswap64 = 42;
+#ifdef __SIZEOF_INT128__
+extern __uint128_t bswap128;
+decltype(__builtin_bswap128(0)) bswap128 = 42;
+#endif
#ifdef __clang__
extern uint8_t bitrev8;
Index: clang/lib/CodeGen/CGBuiltin.cpp
===================================================================
--- clang/lib/CodeGen/CGBuiltin.cpp
+++ clang/lib/CodeGen/CGBuiltin.cpp
@@ -2905,7 +2905,8 @@
}
case Builtin::BI__builtin_bswap16:
case Builtin::BI__builtin_bswap32:
- case Builtin::BI__builtin_bswap64: {
+ case Builtin::BI__builtin_bswap64:
+ case Builtin::BI__builtin_bswap128: {
return RValue::get(emitUnaryBuiltin(*this, E, Intrinsic::bswap));
}
case Builtin::BI__builtin_bitreverse8:
Index: clang/lib/AST/ExprConstant.cpp
===================================================================
--- clang/lib/AST/ExprConstant.cpp
+++ clang/lib/AST/ExprConstant.cpp
@@ -11640,7 +11640,8 @@
case Builtin::BI__builtin_bswap16:
case Builtin::BI__builtin_bswap32:
- case Builtin::BI__builtin_bswap64: {
+ case Builtin::BI__builtin_bswap64:
+ case Builtin::BI__builtin_bswap128: {
APSInt Val;
if (!EvaluateInteger(E->getArg(0), Val, Info))
return false;
Index: clang/include/clang/Basic/Builtins.def
===================================================================
--- clang/include/clang/Basic/Builtins.def
+++ clang/include/clang/Basic/Builtins.def
@@ -512,6 +512,7 @@
BUILTIN(__builtin_bswap16, "UsUs", "nc")
BUILTIN(__builtin_bswap32, "UZiUZi", "nc")
BUILTIN(__builtin_bswap64, "UWiUWi", "nc")
+BUILTIN(__builtin_bswap128, "ULLLiULLLi", "nc")
BUILTIN(__builtin_bitreverse8, "UcUc", "nc")
BUILTIN(__builtin_bitreverse16, "UsUs", "nc")
Index: clang/docs/ReleaseNotes.rst
===================================================================
--- clang/docs/ReleaseNotes.rst
+++ clang/docs/ReleaseNotes.rst
@@ -59,6 +59,8 @@
- Maximum _ExtInt size was decreased from 16,777,215 bits to 8,388,608 bits.
Motivation for this was discussed in PR51829.
+- The builtin ``__builtin_bswap128`` was added.
+
New Compiler Flags
------------------
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