From ec882c3b4f1e1b031447e89cba6becd0ff5e474b Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Thu, 13 Oct 2016 22:38:15 +0000
Subject: [PATCH] CodeGen: adjust floating point operations in Windows itanium

Windows itanium is equivalent to MSVC except in C++ mode.  Ensure that the
promote the 32-bit floating point operations to their 64-bit equivalences.

llvm-svn: 284173
---
 lib/Target/X86/X86ISelLowering.cpp       |  3 +-
 test/CodeGen/X86/fops-windows-itanium.ll | 92 ++++++++++++++++++++++++
 2 files changed, 94 insertions(+), 1 deletion(-)
 create mode 100644 test/CodeGen/X86/fops-windows-itanium.ll

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index c5b3af23771..b4cb04344ea 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -1651,7 +1651,8 @@ X86TargetLowering::X86TargetLowering(const X86TargetMachine &TM,
   // is. We should promote the value to 64-bits to solve this.
   // This is what the CRT headers do - `fmodf` is an inline header
   // function casting to f64 and calling `fmod`.
-  if (Subtarget.is32Bit() && Subtarget.isTargetKnownWindowsMSVC())
+  if (Subtarget.is32Bit() && (Subtarget.isTargetKnownWindowsMSVC() ||
+                              Subtarget.isTargetWindowsItanium()))
     for (ISD::NodeType Op :
          {ISD::FCEIL, ISD::FCOS, ISD::FEXP, ISD::FFLOOR, ISD::FREM, ISD::FLOG,
           ISD::FLOG10, ISD::FPOW, ISD::FSIN})
diff --git a/test/CodeGen/X86/fops-windows-itanium.ll b/test/CodeGen/X86/fops-windows-itanium.ll
new file mode 100644
index 00000000000..e67527f50ab
--- /dev/null
+++ b/test/CodeGen/X86/fops-windows-itanium.ll
@@ -0,0 +1,92 @@
+; RUN: llc -mtriple i686-windows-itanium -filetype asm -o - %s | FileCheck %s
+
+declare float @llvm.ceil.f32(float)
+declare float @llvm.cos.f32(float)
+declare float @llvm.exp.f32(float)
+declare float @llvm.floor.f32(float)
+declare float @llvm.log.f32(float)
+declare float @llvm.log10.f32(float)
+declare float @llvm.pow.f32(float, float)
+declare float @llvm.sin.f32(float)
+
+define float @f(float %f) {
+  %r = call float @llvm.ceil.f32(float %f)
+  ret float %r
+}
+
+; CHECK-LABEL: _f:
+; CHECK-NOT: calll _ceilf
+; CHECK: calll _ceil{{$}}
+
+define float @g(float %f) {
+  %r = call float @llvm.cos.f32(float %f)
+  ret float %r
+}
+
+; CHECK-LABEL: _g:
+; CHECK-NOT: calll _cosf
+; CHECK: calll _cos{{$}}
+
+define float @h(float %f) {
+  %r = call float @llvm.exp.f32(float %f)
+  ret float %r
+}
+
+; CHECK-LABEL: _h:
+; CHECK-NOT: calll _expf
+; CHECK: calll _exp{{$}}
+
+define float @i(float %f) {
+  %r = call float @llvm.floor.f32(float %f)
+  ret float %r
+}
+
+; CHECK-LABEL: _i:
+; CHECK-NOT: calll _floorf
+; CHECK: calll _floor{{$}}
+
+define float @j(float %f, float %g) {
+  %r =  frem float %f, %g
+  ret float %r
+}
+
+; CHECK-LABEL: _j:
+; CHECK-NOT: calll _fmodf
+; CHECK: calll _fmod{{$}}
+
+define float @k(float %f) {
+  %r = call float @llvm.log.f32(float %f)
+  ret float %r
+}
+
+; CHECK-LABEL: _k:
+; CHECK-NOT: calll _logf
+; CHECK: calll _log{{$}}
+
+define float @l(float %f) {
+  %r = call float @llvm.log10.f32(float %f)
+  ret float %r
+}
+
+; CHECK-LABEL: _l:
+; CHECK-NOT: calll _log10f
+; CHECK: calll _log10{{$}}
+
+define float @m(float %f, float %g) {
+  %r = call float @llvm.pow.f32(float %f, float %g)
+  ret float %r
+}
+
+; CHECK-LABEL: _m:
+; CHECK-NOT: calll _powf
+; CHECK: calll _pow{{$}}
+
+define float @n(float %f) {
+  %r = call float @llvm.sin.f32(float %f)
+  ret float %r
+}
+
+; CHECK-LABEL: _n:
+; CHECK-NOT: calll _sinf
+; CHECK: calll _sin{{$}}
+