[Darwin] Fix availability of exp10 for watchOS, tvOS, xROS. (#98542)

Update availability information added in 1eb7f05. exp10 is available
on iOS >= 7.0 and macOS >= 10.9. On all other platforms, it is available
on any version. Also drop the x86 check, as the availability only
depends on the OS version, not the target platform.

PR: #98542

Author: fhahn

llvm/lib/CodeGen/TargetLoweringBase.cpp

@@ -246,18 +246,17 @@ void TargetLoweringBase::InitLibcalls(const Triple &TT) {
       }
       break;
     case Triple::IOS:
-    case Triple::TvOS:
-    case Triple::WatchOS:
-    case Triple::XROS:
-      if (!TT.isWatchOS() &&
-          (TT.isOSVersionLT(7, 0) || (TT.isOSVersionLT(9, 0) && TT.isX86()))) {
+      if (TT.isOSVersionLT(7, 0)) {
         setLibcallName(RTLIB::EXP10_F32, nullptr);
         setLibcallName(RTLIB::EXP10_F64, nullptr);
-      } else {
-        setLibcallName(RTLIB::EXP10_F32, "__exp10f");
-        setLibcallName(RTLIB::EXP10_F64, "__exp10");
+        break;
       }
-
+      [[fallthrough]];
+    case Triple::TvOS:
+    case Triple::WatchOS:
+    case Triple::XROS:
+      setLibcallName(RTLIB::EXP10_F32, "__exp10f");
+      setLibcallName(RTLIB::EXP10_F64, "__exp10");
       break;
     default:
       break;

llvm/test/CodeGen/AArch64/exp10-libcall-names.ll

@@ -4,11 +4,12 @@
 ; RUN: llc -mtriple=aarch64-apple-tvos7.0 < %s | FileCheck -check-prefix=APPLE %s
 ; RUN: llc -mtriple=aarch64-apple-watchos7.0 < %s | FileCheck -check-prefix=APPLE %s
 ; RUN: llc -mtriple=aarch64-apple-xros7.0 < %s | FileCheck -check-prefix=APPLE %s
+; RUN: llc -mtriple=aarch64-apple-tvos6.0 < %s | FileCheck -check-prefix=APPLE %s
+; RUN: llc -mtriple=aarch64-apple-xros6.0 < %s | FileCheck -check-prefix=APPLE %s
+; RUN: llc -mtriple=aarch64-apple-xros1.0 < %s | FileCheck -check-prefix=APPLE %s
 
 ; RUN: not llc -mtriple=aarch64-apple-macos10.8 -filetype=null %s 2>&1 | FileCheck -check-prefix=ERR %s
 ; RUN: not llc -mtriple=aarch64-apple-ios6.0 -filetype=null %s 2>&1 | FileCheck -check-prefix=ERR %s
-; RUN: not llc -mtriple=aarch64-apple-tvos6.0 -filetype=null %s 2>&1 | FileCheck -check-prefix=ERR %s
-; RUN: not llc -mtriple=aarch64-apple-xros6.0 -filetype=null %s 2>&1 | FileCheck -check-prefix=ERR %s
 
 ; Check exp10/exp10f is emitted as __exp10/__exp10f on assorted systems.
 

llvm/test/CodeGen/ARM/exp10-libcall-names.ll

@@ -4,11 +4,12 @@
 ; RUN: llc -mtriple=armv7-apple-tvos7.0 < %s | FileCheck -check-prefix=APPLE %s
 ; RUN: llc -mtriple=armv7-apple-watchos7.0 < %s | FileCheck -check-prefix=APPLE %s
 ; RUN: llc -mtriple=armv7-apple-xros7.0 < %s | FileCheck -check-prefix=APPLE %s
+; RUN: llc -mtriple=armv7-apple-tvos6.0 < %s | FileCheck -check-prefix=APPLE %s
+; RUN: llc -mtriple=armv7-apple-xros6.0 < %s | FileCheck -check-prefix=APPLE %s
+
 
 ; RUN: not llc -mtriple=armv7-apple-macos10.8 -filetype=null %s 2>&1 | FileCheck -check-prefix=ERR %s
 ; RUN: not llc -mtriple=armv7-apple-ios6.0 -filetype=null %s 2>&1 | FileCheck -check-prefix=ERR %s
-; RUN: not llc -mtriple=armv7-apple-tvos6.0 -filetype=null %s 2>&1 | FileCheck -check-prefix=ERR %s
-; RUN: not llc -mtriple=armv7-apple-xros6.0 -filetype=null %s 2>&1 | FileCheck -check-prefix=ERR %s
 
 ; Check exp10/exp10f is emitted as __exp10/__exp10f on assorted systems.
 

llvm/test/CodeGen/X86/exp10-libcall-names.ll

@@ -5,12 +5,11 @@
 ; RUN: llc -mtriple=x86_64-apple-tvos9.0 < %s | FileCheck -check-prefix=APPLE %s
 ; RUN: llc -mtriple=x86_64-apple-watchos9.0 < %s | FileCheck -check-prefix=APPLE %s
 ; RUN: llc -mtriple=x86_64-apple-xros9.0 < %s | FileCheck -check-prefix=APPLE %s
+; RUN: llc -mtriple=x86_64-apple-ios8.0 < %s | FileCheck -check-prefix=APPLE %s
+; RUN: llc -mtriple=x86_64-apple-tvos8.0 < %s | FileCheck -check-prefix=APPLE %s
+; RUN: llc -mtriple=x86_64-apple-xros8.0 < %s | FileCheck -check-prefix=APPLE %s
 
 ; RUN: not llc -mtriple=x86_64-apple-macos10.8 -filetype=null %s 2>&1 | FileCheck -check-prefix=ERR %s
-; RUN: not llc -mtriple=x86_64-apple-ios8.0 -filetype=null %s 2>&1 | FileCheck -check-prefix=ERR %s
-; RUN: not llc -mtriple=x86_64-apple-tvos8.0 -filetype=null %s 2>&1 | FileCheck -check-prefix=ERR %s
-; RUN: not llc -mtriple=x86_64-apple-xros8.0 -filetype=null %s 2>&1 | FileCheck -check-prefix=ERR %s
-
 ; Check exp10/exp10f is emitted as __exp10/__exp10f on assorted systems.
 
 ; ERR: no libcall available for fexp10