[llvm-commits] [llvm] r103911 - in /llvm/trunk: lib/Target/X86/X86ISelLowering.cpp test/CodeGen/X86/2010-05-16-nosseconversion.ll

[Dale Johannesen]

Author: johannes
Date: Sun May 16 13:22:38 2010
New Revision: 103911

URL: http://llvm.org/viewvc/llvm-project?rev=103911&view=rev
Log:
Make x86-64 64-bit bitconvert work when SSE is not available.
(This worked as of about 6 months ago and I didn't track down
exactly what broke it; I think this fix is appropriate.)


Added:
    llvm/trunk/test/CodeGen/X86/2010-05-16-nosseconversion.ll
Modified:
    llvm/trunk/lib/Target/X86/X86ISelLowering.cpp

Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=103911&r1=103910&r2=103911&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Sun May 16 13:22:38 2010
@@ -217,6 +217,10 @@
   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

Added: llvm/trunk/test/CodeGen/X86/2010-05-16-nosseconversion.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/2010-05-16-nosseconversion.ll?rev=103911&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/2010-05-16-nosseconversion.ll (added)
+++ llvm/trunk/test/CodeGen/X86/2010-05-16-nosseconversion.ll Sun May 16 13:22:38 2010
@@ -0,0 +1,11 @@
+; RUN: llc -mtriple=x86_64-apple-darwin -mattr=-sse < %s
+
+ at 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
+}