[TargetLibraryInfo] Correctly handle sqrt*_finite

Other <math>_finite calls are marked as unavailable except on GNU/Linux;
it looks like the sqrt set was just overlooked.

Differential Revision: https://reviews.llvm.org/D110418

Author: pogo59

llvm/lib/Analysis/TargetLibraryInfo.cpp

@@ -568,6 +568,9 @@ static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
     TLI.setUnavailable(LibFunc_sinh_finite);
     TLI.setUnavailable(LibFunc_sinhf_finite);
     TLI.setUnavailable(LibFunc_sinhl_finite);
+    TLI.setUnavailable(LibFunc_sqrt_finite);
+    TLI.setUnavailable(LibFunc_sqrtf_finite);
+    TLI.setUnavailable(LibFunc_sqrtl_finite);
   }
 
   if ((T.isOSLinux() && T.isGNUEnvironment()) ||

llvm/test/CodeGen/X86/sqrt-fastmath.ll

@@ -1,7 +1,7 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc < %s -mtriple=x86_64-- -mcpu=x86-64 -mattr=+sse2 | FileCheck %s --check-prefix=CHECK --check-prefix=SSE
-; RUN: llc < %s -mtriple=x86_64-- -mcpu=x86-64 -mattr=+avx  | FileCheck %s --check-prefix=CHECK --check-prefix=AVX --check-prefix=AVX1
-; RUN: llc < %s -mtriple=x86_64-- -mcpu=x86-64 -mattr=+avx512f  | FileCheck %s --check-prefix=CHECK --check-prefix=AVX --check-prefix=AVX512
+; RUN: llc < %s -mtriple=x86_64--linux-gnu -mcpu=x86-64 -mattr=+sse2 | FileCheck %s --check-prefix=CHECK --check-prefix=SSE
+; RUN: llc < %s -mtriple=x86_64--linux-gnu -mcpu=x86-64 -mattr=+avx  | FileCheck %s --check-prefix=CHECK --check-prefix=AVX --check-prefix=AVX1
+; RUN: llc < %s -mtriple=x86_64--linux-gnu -mcpu=x86-64 -mattr=+avx512f  | FileCheck %s --check-prefix=CHECK --check-prefix=AVX --check-prefix=AVX512
 
 declare double @__sqrt_finite(double)
 declare float @__sqrtf_finite(float)