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Make x86-64 64-bit bitconvert work when SSE is not available.

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(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
This commit is contained in:
Dale Johannesen 2010-05-16 18:22:38 +00:00
parent bd91ea53f8
commit f9b2242927
2 changed files with 15 additions and 0 deletions
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4
lib/Target/X86/X86ISelLowering.cpp
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@ -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

11
test/CodeGen/X86/2010-05-16-nosseconversion.ll Normal file
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@ -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
}