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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162728 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 908ebb948647ba4cfd3c12da011ef024b70203ce..7b341700b8b19464e01c98919a633dda58276d32 100644 (file)
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/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/test/CodeGen/Mips/uitofp.ll b/test/CodeGen/Mips/uitofp.ll
new file mode 100644 (file)
index 0000000..aff70c2
--- /dev/null
+++ b/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
+}