From f9b22429278412fda6e1cae3f5727dbc61ff6770 Mon Sep 17 00:00:00 2001 From: Dale Johannesen Date: Sun, 16 May 2010 18:22:38 +0000 Subject: [PATCH] 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.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103911 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86ISelLowering.cpp | 4 ++++ test/CodeGen/X86/2010-05-16-nosseconversion.ll | 11 +++++++++++ 2 files changed, 15 insertions(+) create mode 100644 test/CodeGen/X86/2010-05-16-nosseconversion.ll diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 9fa7bb1d3cc..35127eb84db 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 00000000000..266681cd169 --- /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 ; [#uses=1] + +define i32 @foo() nounwind readonly ssp { +entry: + %0 = load i64* @x, align 8 ; [#uses=1] + %1 = uitofp i64 %0 to double ; [#uses=1] + %2 = fptosi double %1 to i32 ; [#uses=1] + ret i32 %2 +} -- 2.34.1