[TLI] Add support for the tgamma libcall.

llvm/include/llvm/Analysis/TargetLibraryInfo.def

@@ -1140,6 +1140,21 @@ TLI_DEFINE_ENUM_INTERNAL(erfl)
 TLI_DEFINE_STRING_INTERNAL("erfl")
 TLI_DEFINE_SIG_INTERNAL(LDbl, LDbl)
 
+/// double tgamma(double x);
+TLI_DEFINE_ENUM_INTERNAL(tgamma)
+TLI_DEFINE_STRING_INTERNAL("tgamma")
+TLI_DEFINE_SIG_INTERNAL(Dbl, Dbl)
+
+/// float tgammaf(float x);
+TLI_DEFINE_ENUM_INTERNAL(tgammaf)
+TLI_DEFINE_STRING_INTERNAL("tgammaf")
+TLI_DEFINE_SIG_INTERNAL(Flt, Flt)
+
+/// long double tgammal(long double x);
+TLI_DEFINE_ENUM_INTERNAL(tgammal)
+TLI_DEFINE_STRING_INTERNAL("tgammal")
+TLI_DEFINE_SIG_INTERNAL(LDbl, LDbl)
+
 /// int execl(const char *path, const char *arg, ...);
 TLI_DEFINE_ENUM_INTERNAL(execl)
 TLI_DEFINE_STRING_INTERNAL("execl")

llvm/lib/Transforms/Utils/BuildLibCalls.cpp

@@ -1179,6 +1179,9 @@ bool llvm::inferNonMandatoryLibFuncAttrs(Function &F,
   case LibFunc_erf:
   case LibFunc_erff:
   case LibFunc_erfl:
+  case LibFunc_tgamma:
+  case LibFunc_tgammaf:
+  case LibFunc_tgammal:
   case LibFunc_exp:
   case LibFunc_expf:
   case LibFunc_expl:

llvm/test/Transforms/InferFunctionAttrs/annotate.ll

@@ -667,6 +667,15 @@ declare float @logf(float)
 ; CHECK: declare x86_fp80 @logl(x86_fp80) [[NOFREE_NOUNWIND_WILLRETURN_WRITEONLY]]
 declare x86_fp80 @logl(x86_fp80)
 
+; CHECK: declare double @tgamma(double) [[NOFREE_NOUNWIND_WILLRETURN_WRITEONLY]]
+declare double @tgamma(double)
+
+; CHECK: declare float @tgammaf(float) [[NOFREE_NOUNWIND_WILLRETURN_WRITEONLY]]
+declare float @tgammaf(float)
+
+; CHECK: declare x86_fp80 @tgammal(x86_fp80) [[NOFREE_NOUNWIND_WILLRETURN_WRITEONLY]]
+declare x86_fp80 @tgammal(x86_fp80)
+
 ; CHECK: declare noundef i32 @lstat(ptr nocapture noundef readonly, ptr nocapture noundef) [[NOFREE_NOUNWIND]]
 declare i32 @lstat(ptr, ptr)
 

llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml

@@ -34,7 +34,7 @@
 #
 # CHECK: << Total TLI yes SDK no:  18
 # CHECK: >> Total TLI no  SDK yes: 0
-# CHECK: == Total TLI yes SDK yes: 265
+# CHECK: == Total TLI yes SDK yes: 268
 #
 # WRONG_DETAIL: << TLI yes SDK no : '_ZdaPv' aka operator delete[](void*)
 # WRONG_DETAIL: >> TLI no  SDK yes: '_ZdaPvj' aka operator delete[](void*, unsigned int)
@@ -48,14 +48,14 @@
 # WRONG_DETAIL: << TLI yes SDK no : 'fminimum_numl'
 # WRONG_SUMMARY: << Total TLI yes SDK no:  19{{$}}
 # WRONG_SUMMARY: >> Total TLI no  SDK yes: 1{{$}}
-# WRONG_SUMMARY: == Total TLI yes SDK yes: 264
+# WRONG_SUMMARY: == Total TLI yes SDK yes: 267
 #
 ## The -COUNT suffix doesn't care if there are too many matches, so check
 ## the exact count first; the two directives should add up to that.
 ## Yes, this means additions to TLI will fail this test, but the argument
 ## to -COUNT can't be an expression.
-# AVAIL: TLI knows 516 symbols, 283 available
-# AVAIL-COUNT-283: {{^}} available
+# AVAIL: TLI knows 519 symbols, 286 available
+# AVAIL-COUNT-286: {{^}} available
 # AVAIL-NOT:       {{^}} available
 # UNAVAIL-COUNT-233: not available
 # UNAVAIL-NOT:       not available
@@ -390,6 +390,18 @@ DynamicSymbols:
     Type:            STT_FUNC
     Section:         .text
     Binding:         STB_GLOBAL
+  - Name:            tgamma
+    Type:            STT_FUNC
+    Section:         .text
+    Binding:         STB_GLOBAL
+  - Name:            tgammaf
+    Type:            STT_FUNC
+    Section:         .text
+    Binding:         STB_GLOBAL
+  - Name:            tgammal
+    Type:            STT_FUNC
+    Section:         .text
+    Binding:         STB_GLOBAL
   - Name:            exp
     Type:            STT_FUNC
     Section:         .text

llvm/unittests/Analysis/TargetLibraryInfoTest.cpp

@@ -303,6 +303,9 @@ TEST_F(TargetLibraryInfoTest, ValidProto) {
       "declare double @erf(double)\n"
       "declare float @erff(float)\n"
       "declare x86_fp80 @erfl(x86_fp80)\n"
+      "declare double @tgamma(double)\n"
+      "declare float @tgammaf(float)\n"
+      "declare x86_fp80 @tgammal(x86_fp80)\n"
       "declare i32 @printf(i8*, ...)\n"
       "declare i32 @putc(i32, %struct*)\n"
       "declare i32 @putc_unlocked(i32, %struct*)\n"