[TargetLibraryInfo] fix finite mathlib function availability

This patch was part of:
https://reviews.llvm.org/D41338
...but we can expose the bug in IR via constant propagation
as shown in the test. Unless the triple includes 'linux', we
should not fold these because the functions don't exist on
other platforms (yet?).

llvm-svn: 322010

1 files changed, 44 insertions, 44 deletions

diff --git a/llvm/lib/Analysis/TargetLibraryInfo.cpp b/llvm/lib/Analysis/TargetLibraryInfo.cpp
index d18246ac594..f655eaeca52 100644
--- a/llvm/lib/Analysis/TargetLibraryInfo.cpp
+++ b/llvm/lib/Analysis/TargetLibraryInfo.cpp
@@ -245,50 +245,6 @@ static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
       TLI.setUnavailable(LibFunc_tanhf);
     }
 
-    // These definitions are due to math-finite.h header on Linux
-    TLI.setUnavailable(LibFunc_acos_finite);
-    TLI.setUnavailable(LibFunc_acosf_finite);
-    TLI.setUnavailable(LibFunc_acosl_finite);
-    TLI.setUnavailable(LibFunc_acosh_finite);
-    TLI.setUnavailable(LibFunc_acoshf_finite);
-    TLI.setUnavailable(LibFunc_acoshl_finite);
-    TLI.setUnavailable(LibFunc_asin_finite);
-    TLI.setUnavailable(LibFunc_asinf_finite);
-    TLI.setUnavailable(LibFunc_asinl_finite);
-    TLI.setUnavailable(LibFunc_atan2_finite);
-    TLI.setUnavailable(LibFunc_atan2f_finite);
-    TLI.setUnavailable(LibFunc_atan2l_finite);
-    TLI.setUnavailable(LibFunc_atanh_finite);
-    TLI.setUnavailable(LibFunc_atanhf_finite);
-    TLI.setUnavailable(LibFunc_atanhl_finite);
-    TLI.setUnavailable(LibFunc_cosh_finite);
-    TLI.setUnavailable(LibFunc_coshf_finite);
-    TLI.setUnavailable(LibFunc_coshl_finite);
-    TLI.setUnavailable(LibFunc_exp10_finite);
-    TLI.setUnavailable(LibFunc_exp10f_finite);
-    TLI.setUnavailable(LibFunc_exp10l_finite);
-    TLI.setUnavailable(LibFunc_exp2_finite);
-    TLI.setUnavailable(LibFunc_exp2f_finite);
-    TLI.setUnavailable(LibFunc_exp2l_finite);
-    TLI.setUnavailable(LibFunc_exp_finite);
-    TLI.setUnavailable(LibFunc_expf_finite);
-    TLI.setUnavailable(LibFunc_expl_finite);
-    TLI.setUnavailable(LibFunc_log10_finite);
-    TLI.setUnavailable(LibFunc_log10f_finite);
-    TLI.setUnavailable(LibFunc_log10l_finite);
-    TLI.setUnavailable(LibFunc_log2_finite);
-    TLI.setUnavailable(LibFunc_log2f_finite);
-    TLI.setUnavailable(LibFunc_log2l_finite);
-    TLI.setUnavailable(LibFunc_log_finite);
-    TLI.setUnavailable(LibFunc_logf_finite);
-    TLI.setUnavailable(LibFunc_logl_finite);
-    TLI.setUnavailable(LibFunc_pow_finite);
-    TLI.setUnavailable(LibFunc_powf_finite);
-    TLI.setUnavailable(LibFunc_powl_finite);
-    TLI.setUnavailable(LibFunc_sinh_finite);
-    TLI.setUnavailable(LibFunc_sinhf_finite);
-    TLI.setUnavailable(LibFunc_sinhl_finite);
-
     // Win32 does *not* provide provide these functions, but they are
     // generally available on POSIX-compliant systems:
     TLI.setUnavailable(LibFunc_access);
@@ -460,6 +416,50 @@ static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
     TLI.setUnavailable(LibFunc_stat64);
     TLI.setUnavailable(LibFunc_statvfs64);
     TLI.setUnavailable(LibFunc_tmpfile64);
+
+    // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
+    TLI.setUnavailable(LibFunc_acos_finite);
+    TLI.setUnavailable(LibFunc_acosf_finite);
+    TLI.setUnavailable(LibFunc_acosl_finite);
+    TLI.setUnavailable(LibFunc_acosh_finite);
+    TLI.setUnavailable(LibFunc_acoshf_finite);
+    TLI.setUnavailable(LibFunc_acoshl_finite);
+    TLI.setUnavailable(LibFunc_asin_finite);
+    TLI.setUnavailable(LibFunc_asinf_finite);
+    TLI.setUnavailable(LibFunc_asinl_finite);
+    TLI.setUnavailable(LibFunc_atan2_finite);
+    TLI.setUnavailable(LibFunc_atan2f_finite);
+    TLI.setUnavailable(LibFunc_atan2l_finite);
+    TLI.setUnavailable(LibFunc_atanh_finite);
+    TLI.setUnavailable(LibFunc_atanhf_finite);
+    TLI.setUnavailable(LibFunc_atanhl_finite);
+    TLI.setUnavailable(LibFunc_cosh_finite);
+    TLI.setUnavailable(LibFunc_coshf_finite);
+    TLI.setUnavailable(LibFunc_coshl_finite);
+    TLI.setUnavailable(LibFunc_exp10_finite);
+    TLI.setUnavailable(LibFunc_exp10f_finite);
+    TLI.setUnavailable(LibFunc_exp10l_finite);
+    TLI.setUnavailable(LibFunc_exp2_finite);
+    TLI.setUnavailable(LibFunc_exp2f_finite);
+    TLI.setUnavailable(LibFunc_exp2l_finite);
+    TLI.setUnavailable(LibFunc_exp_finite);
+    TLI.setUnavailable(LibFunc_expf_finite);
+    TLI.setUnavailable(LibFunc_expl_finite);
+    TLI.setUnavailable(LibFunc_log10_finite);
+    TLI.setUnavailable(LibFunc_log10f_finite);
+    TLI.setUnavailable(LibFunc_log10l_finite);
+    TLI.setUnavailable(LibFunc_log2_finite);
+    TLI.setUnavailable(LibFunc_log2f_finite);
+    TLI.setUnavailable(LibFunc_log2l_finite);
+    TLI.setUnavailable(LibFunc_log_finite);
+    TLI.setUnavailable(LibFunc_logf_finite);
+    TLI.setUnavailable(LibFunc_logl_finite);
+    TLI.setUnavailable(LibFunc_pow_finite);
+    TLI.setUnavailable(LibFunc_powf_finite);
+    TLI.setUnavailable(LibFunc_powl_finite);
+    TLI.setUnavailable(LibFunc_sinh_finite);
+    TLI.setUnavailable(LibFunc_sinhf_finite);
+    TLI.setUnavailable(LibFunc_sinhl_finite);
   }
 
   // As currently implemented in clang, NVPTX code has no standard library to