commit 52149f03053a1590b9cb1f620311fb800624d189
author Sanjay Patel <spatel@rotateright.com> Mon Jan 08 17:38:09 2018 +0000
committer Sanjay Patel <spatel@rotateright.com> Mon Jan 08 17:38:09 2018 +0000
tree e71852609ac3eee8acd9d9af2962b964c24c9f18
parent 342fa0534360601ae39263f7d959b0f32a3ef79f

[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

llvm/lib/Analysis/TargetLibraryInfo.cpp

diff --git a/llvm/lib/Analysis/TargetLibraryInfo.cpp b/llvm/lib/Analysis/TargetLibraryInfo.cpp
index d18246a..f655eae 100644
--- a/llvm/lib/Analysis/TargetLibraryInfo.cpp
+++ b/llvm/lib/Analysis/TargetLibraryInfo.cpp
@@ -245,50 +245,6 @@
       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 @@
     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