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| author | Andrea Di Biagio <Andrea_DiBiagio@sn.scee.net> | 2014-04-24 18:26:35 +0000 |
|---|---|---|
| committer | Andrea Di Biagio <Andrea_DiBiagio@sn.scee.net> | 2014-04-24 18:26:35 +0000 |
| commit | 7ceec07cf6be763267f757b3bc1b1cd46eccf89c (patch) | |
| tree | 5df3000dd9d30edfaca681121102a62e6e89990e /clang | |
| parent | 16f2f18105e0c4b0d7bf247a70c82f955113b69b (diff) | |
| download | bcm5719-llvm-7ceec07cf6be763267f757b3bc1b1cd46eccf89c.tar.gz bcm5719-llvm-7ceec07cf6be763267f757b3bc1b1cd46eccf89c.zip | |
[X86] Add Clang support for intrinsics __rdtsc and __rdtscp.
This patch:
1. Adds a definition for two new GCCBuiltins in BuiltinsX86.def:
__builtin_ia32_rdtsc;
__builtin_ia32_rdtscp;
2. Replaces the already existing definition of intrinsic __rdtsc in
ia32intrin.h with a simple call to the new GCC builtin __builtin_ia32_rdtsc.
3. Adds a definition for the new intrinsic __rdtscp in ia32intrin.h
llvm-svn: 207132
Diffstat (limited to 'clang')
| -rw-r--r-- | clang/include/clang/Basic/BuiltinsX86.def | 2 | ||||
| -rw-r--r-- | clang/lib/Headers/ia32intrin.h | 10 | ||||
| -rw-r--r-- | clang/test/CodeGen/builtins-x86.c | 3 |
3 files changed, 12 insertions, 3 deletions
diff --git a/clang/include/clang/Basic/BuiltinsX86.def b/clang/include/clang/Basic/BuiltinsX86.def index 4a67fc1f5ff..8faaea381ae 100644 --- a/clang/include/clang/Basic/BuiltinsX86.def +++ b/clang/include/clang/Basic/BuiltinsX86.def @@ -760,5 +760,7 @@ BUILTIN(__builtin_ia32_xbegin, "i", "") BUILTIN(__builtin_ia32_xend, "v", "") BUILTIN(__builtin_ia32_xabort, "vIc", "") BUILTIN(__builtin_ia32_xtest, "i", "") +BUILTIN(__builtin_ia32_rdtsc, "ULLi", "") +BUILTIN(__builtin_ia32_rdtscp, "ULLiUi*", "") #undef BUILTIN diff --git a/clang/lib/Headers/ia32intrin.h b/clang/lib/Headers/ia32intrin.h index a5985f660bb..55c22473ba7 100644 --- a/clang/lib/Headers/ia32intrin.h +++ b/clang/lib/Headers/ia32intrin.h @@ -82,9 +82,13 @@ __writeeflags(unsigned int __f) /* __rdtsc */ static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__)) __rdtsc(void) { - unsigned int __eax, __edx; - __asm__ ("rdtsc" : "=a" (__eax), "=d" (__edx)); - return ((unsigned long long)__edx << 32) | __eax; + return __builtin_ia32_rdtsc(); +} + +/* __rdtscp */ +static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__)) +__rdtscp(unsigned int *__A) { + return __builtin_ia32_rdtscp(__A); } #define _rdtsc() __rdtsc() diff --git a/clang/test/CodeGen/builtins-x86.c b/clang/test/CodeGen/builtins-x86.c index 261bf2f5d8b..6df005d8604 100644 --- a/clang/test/CodeGen/builtins-x86.c +++ b/clang/test/CodeGen/builtins-x86.c @@ -263,6 +263,9 @@ void f0() { tmp_V4f = __builtin_ia32_cvtpi2ps(tmp_V4f, tmp_V2i); tmp_V2i = __builtin_ia32_cvtps2pi(tmp_V4f); tmp_i = __builtin_ia32_cvtss2si(tmp_V4f); + + tmp_i = __builtin_ia32_rdtsc(); + tmp_i = __builtin_ia32_rdtscp(&tmp_Ui); #ifdef USE_64 tmp_LLi = __builtin_ia32_cvtss2si64(tmp_V4f); #endif |
