From adb14f56c7012bd7a8b472a2995da95935eefd59 Mon Sep 17 00:00:00 2001
From: Akira Hatanaka <ahatanaka@mips.com>
Date: Tue, 28 Aug 2012 02:12:42 +0000
Subject: [PATCH] Fix bug 13532.

In SelectionDAGLegalize::ExpandLegalINT_TO_FP, expand INT_TO_FP nodes without
using any f64 operations if f64 is not a legal type.

Patch by Stefan Kristiansson.

llvm-svn: 162728
---
 llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp |  2 +-
 llvm/test/CodeGen/Mips/uitofp.ll              | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)
 create mode 100644 llvm/test/CodeGen/Mips/uitofp.ll

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 908ebb948647..7b341700b8b1 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2042,7 +2042,7 @@ SDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned,
                                                    SDValue Op0,
                                                    EVT DestVT,
                                                    DebugLoc dl) {
-  if (Op0.getValueType() == MVT::i32) {
+  if (Op0.getValueType() == MVT::i32 && TLI.isTypeLegal(MVT::f64)) {
     // simple 32-bit [signed|unsigned] integer to float/double expansion
 
     // Get the stack frame index of a 8 byte buffer.
diff --git a/llvm/test/CodeGen/Mips/uitofp.ll b/llvm/test/CodeGen/Mips/uitofp.ll
new file mode 100644
index 000000000000..aff70c24f07c
--- /dev/null
+++ b/llvm/test/CodeGen/Mips/uitofp.ll
@@ -0,0 +1,12 @@
+; RUN: llc -march=mips -mattr=+single-float < %s
+
+define void @f0() nounwind {
+entry:
+  %b = alloca i32, align 4
+  %a = alloca float, align 4
+  store volatile i32 1, i32* %b, align 4
+  %0 = load volatile i32* %b, align 4
+  %conv = uitofp i32 %0 to float
+  store float %conv, float* %a, align 4
+  ret void
+}