From b83c66eb5e1efb8a1b2b204fc67fe7d11e938248 Mon Sep 17 00:00:00 2001
From: Reed Kotler <rkotler@mips.com>
Date: Sun, 1 Sep 2013 04:12:59 +0000
Subject: [PATCH] Make sure we don't generate stubs for any of these functions
 because they don't exist in libc. This is really not the right way to solve
 this problem; but it's not clear to me at this time exactly what is the right
 way. If we create stubs here, they will cause link errors because these
 functions do not exist in libc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189727 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Mips/Mips16HardFloat.cpp | 23 +++++++++++++++++++++--
 test/CodeGen/Mips/powif64_16.ll     | 28 +++++++++++++---------------
 2 files changed, 34 insertions(+), 17 deletions(-)

diff --git a/lib/Target/Mips/Mips16HardFloat.cpp b/lib/Target/Mips/Mips16HardFloat.cpp
index a66abb2b59b..a73d1628dbd 100644
--- a/lib/Target/Mips/Mips16HardFloat.cpp
+++ b/lib/Target/Mips/Mips16HardFloat.cpp
@@ -322,10 +322,29 @@ static void assureFPCallStub(Function &F, Module *M,
 }
 
 //
-// Functions that are inline intrinsics don't need helpers.
+// Functions that are llvm intrinsics and don't need helpers.
 //
 static const char *IntrinsicInline[] =
-  {"fabs", "llvm.powi.f64"};
+  {"fabs",
+   "llvm.ceil.f32", "llvm.ceil.f64",
+   "llvm.copysign.f32", "llvm.copysign.f64",
+   "llvm.cos.f32", "llvm.cos.f64",
+   "llvm.exp.f32", "llvm.exp.f64",
+   "llvm.exp2.f32", "llvm.exp2.f64",
+   "llvm.fabs.f32", "llvm.fabs.f64",
+   "llvm.floor.f32", "llvm.floor.f64",
+   "llvm.fma.f32", "llvm.fma.f64",
+   "llvm.log.f32", "llvm.log.f64",
+   "llvm.log10.f32", "llvm.log10.f64",
+   "llvm.nearbyint.f32", "llvm.nearbyint.f64",
+   "llvm.pow.f32", "llvm.pow.f64",
+   "llvm.powi.f32", "llvm.powi.f64",
+   "llvm.rint.f32", "llvm.rint.f64",
+   "llvm.round.f32", "llvm.round.f64",
+   "llvm.sin.f32", "llvm.sin.f64",
+   "llvm.sqrt.f32", "llvm.sqrt.f64",
+   "llvm.trunc.f32", "llvm.trunc.f64",
+  };
 
 static bool isIntrinsicInline(Function *F) {
   return std::binary_search(
diff --git a/test/CodeGen/Mips/powif64_16.ll b/test/CodeGen/Mips/powif64_16.ll
index 8431f316d65..35a7ca9201e 100644
--- a/test/CodeGen/Mips/powif64_16.ll
+++ b/test/CodeGen/Mips/powif64_16.ll
@@ -1,23 +1,21 @@
 ; RUN: llc -mtriple=mipsel-linux-gnu -march=mipsel -mcpu=mips16 -mips16-hard-float -soft-float -relocation-model=static < %s | FileCheck %s 
 
-@x = global double 4.500000e+00, align 8
-@i = global i32 4, align 4
-@y = common global double 0.000000e+00, align 8
+declare float     @llvm.powi.f32(float  %Val, i32 %power)
+declare double    @llvm.powi.f64(double %Val, i32 %power)
 
-; Function Attrs: nounwind optsize
-define i32 @main() #0 {
-entry:
-  %0 = load double* @x, align 8, !tbaa !0
-  %1 = load i32* @i, align 4, !tbaa !3
-  %2 = tail call double @llvm.powi.f64(double %0, i32 %1)
+define float @foo_pow_f32(float %y, i32 %p)  {
+  %1 = tail call float @llvm.powi.f32(float %y, i32 %p)
+; CHECK-NOT: .ent	__call_stub_fp_llvm.powi.f32
+; CHECK-NOT: {{.*}} jal llvm.powi.f32
+  ret float %1
+} 
+
+define double @foo_pow_f64(double %y, i32 %p)  {
+  %1 = tail call double @llvm.powi.f64(double %y, i32 %p)
 ; CHECK-NOT: .ent	__call_stub_fp_llvm.powi.f64
 ; CHECK-NOT: {{.*}} jal llvm.powi.f64 
-  store double %2, double* @y, align 8, !tbaa !0
-  ret i32 0
-}
-
-; Function Attrs: nounwind readonly
-declare double @llvm.powi.f64(double, i32) #1
+  ret double %1
+} 
 
 attributes #0 = { nounwind optsize "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="true" }
 attributes #1 = { nounwind readonly }