Merging r228765:

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r228765 | petarj | 2015-02-10 23:30:14 +0000 (Tue, 10 Feb 2015) | 12 lines

Fix makeLibCall argument (signed) in SoftenFloatRes_XINT_TO_FP function

The isSigned argument of makeLibCall function was hard-coded to false
(unsigned). This caused zero extension on MIPS64 soft float.
As the result SingleSource/Benchmarks/Stanford/FloatMM test and
SingleSource/UnitTests/2005-07-17-INT-To-FP test failed.
The solution was to use the proper argument.

Patch by Strahinja Petrovic.

Differential Revision: http://reviews.llvm.org/D7292

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_36@235972 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
index 4591e79316d8236e4d76a55b5cb8dbfb86f295ce..b59671554348d75b378065a2d6f5313f009b0ba5 100644 (file)
--- a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
@@ -658,7 +658,7 @@ SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) {
                            NVT, N->getOperand(0));
   return TLI.makeLibCall(DAG, LC,
                          TLI.getTypeToTransformTo(*DAG.getContext(), RVT),
-                         &Op, 1, false, dl).first;
+                         &Op, 1, Signed, dl).first;
 }
 
 

diff --git a/test/CodeGen/Mips/mips64sinttofpsf.ll b/test/CodeGen/Mips/mips64sinttofpsf.ll
new file mode 100644 (file)
index 0000000..d3d4603
--- /dev/null
+++ b/test/CodeGen/Mips/mips64sinttofpsf.ll
@@ -0,0 +1,15 @@
+; RUN: llc -march=mips64 -mcpu=mips64r2 -soft-float -O0 < %s | FileCheck %s
+
+
+define double @foo() #0 {
+entry:
+  %x = alloca i32, align 4
+  store volatile i32 -32, i32* %x, align 4
+  %0 = load volatile i32* %x, align 4
+  %conv = sitofp i32 %0 to double
+  ret double %conv
+
+; CHECK-NOT:        dsll
+; CHECK-NOT:        dsrl
+
+}