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-rw-r--r--lib/Target/X86/X86ISelLowering.cpp4
-rw-r--r--test/CodeGen/X86/2010-05-16-nosseconversion.ll11
2 files changed, 15 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 9fa7bb1..35127eb 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -217,6 +217,10 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
if (!X86ScalarSSEf64) {
setOperationAction(ISD::BIT_CONVERT , MVT::f32 , Expand);
setOperationAction(ISD::BIT_CONVERT , MVT::i32 , Expand);
+ if (Subtarget->is64Bit()) {
+ setOperationAction(ISD::BIT_CONVERT , MVT::f64 , Expand);
+ setOperationAction(ISD::BIT_CONVERT , MVT::i64 , Expand);
+ }
}
// Scalar integer divide and remainder are lowered to use operations that
diff --git a/test/CodeGen/X86/2010-05-16-nosseconversion.ll b/test/CodeGen/X86/2010-05-16-nosseconversion.ll
new file mode 100644
index 0000000..266681c
--- /dev/null
+++ b/test/CodeGen/X86/2010-05-16-nosseconversion.ll
@@ -0,0 +1,11 @@
+; RUN: llc -mtriple=x86_64-apple-darwin -mattr=-sse < %s
+
+@x = common global i64 0 ; <i64*> [#uses=1]
+
+define i32 @foo() nounwind readonly ssp {
+entry:
+ %0 = load i64* @x, align 8 ; <i64> [#uses=1]
+ %1 = uitofp i64 %0 to double ; <double> [#uses=1]
+ %2 = fptosi double %1 to i32 ; <i32> [#uses=1]
+ ret i32 %2
+}