[PATCH] D115850: [LTO][codegen] Add TargetLibraryInfoWrapperPass initially

[Freddy, Ye via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG0f5b718030e7: [LTO][codegen] Add TargetLibraryInfoWrapperPass initially (authored by craig.topper, committed by FreddyYe).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D115850/new/

https://reviews.llvm.org/D115850

Files:
  llvm/lib/LTO/LTOBackend.cpp
  llvm/test/LTO/X86/tli-sqrtf_finite.ll


Index: llvm/test/LTO/X86/tli-sqrtf_finite.ll
===================================================================
--- /dev/null
+++ llvm/test/LTO/X86/tli-sqrtf_finite.ll
@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s > %t
+; RUN: llvm-lto %t -exported-symbol=foo -filetype=asm -o - | FileCheck %s
+
+; Check that sqrtf_finite is recognized as a libcall by SelectionDAGBuilder
+; to enable sqrtss instruction to be used.
+
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define float @foo(float %x) {
+; CHECK: sqrtss
+  %call = tail call nnan ninf float @__sqrtf_finite(float %x) readnone
+  ret float %call
+}
+
+declare float @__sqrtf_finite(float) readnone
Index: llvm/lib/LTO/LTOBackend.cpp
===================================================================
--- llvm/lib/LTO/LTOBackend.cpp
+++ llvm/lib/LTO/LTOBackend.cpp
@@ -415,6 +415,8 @@
   TM->Options.ObjectFilenameForDebug = Stream->ObjectPathName;
 
   legacy::PassManager CodeGenPasses;
+  TargetLibraryInfoImpl TLII(Triple(Mod.getTargetTriple()));
+  CodeGenPasses.add(new TargetLibraryInfoWrapperPass(TLII));
   CodeGenPasses.add(
       createImmutableModuleSummaryIndexWrapperPass(&CombinedIndex));
   if (Conf.PreCodeGenPassesHook)


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