[PATCH] D21282: AMDGPU: mark {exp, log}10{, f, l} library functions as unavailable

Nicolai Hähnle via llvm-commits llvm-commits at lists.llvm.org
Mon Jun 13 02:06:39 PDT 2016

nhaehnle created this revision.
nhaehnle added reviewers: arsenm, tstellarAMD.
nhaehnle added a subscriber: llvm-commits.
Herald added a subscriber: kzhuravl.

The SimplifyLibCalls part of InstCombine generates calls to those otherwise.

I wonder if at some point we shouldn't just call disableAllFunctions() and
then enable functions on a whitelist basis...

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96495



Index: lib/Analysis/TargetLibraryInfo.cpp
--- lib/Analysis/TargetLibraryInfo.cpp
+++ lib/Analysis/TargetLibraryInfo.cpp
@@ -65,6 +65,12 @@
+    TLI.setUnavailable(LibFunc::exp10);
+    TLI.setUnavailable(LibFunc::exp10f);
+    TLI.setUnavailable(LibFunc::exp10l);
+    TLI.setUnavailable(LibFunc::log10);
+    TLI.setUnavailable(LibFunc::log10f);
+    TLI.setUnavailable(LibFunc::log10l);
   // There are no library implementations of mempcy and memset for AMD gpus and

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