upstream/opnsense-src
1
0
Fork 0
mirror of https://github.com/opnsense/src.git synced 2026-04-26 08:37:50 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Pull in r217410 from upstream llvm trunk (by Bob Wilson):

Browse source 
Set trunc store action to Expand for all X86 targets.

  When compiling without SSE2, isTruncStoreLegal(F64, F32) would return
  Legal, whereas with SSE2 it would return Expand. And since the Target
  doesn't seem to actually handle a truncstore for double -> float, it
  would just output a store of a full double in the space for a float
  hence overwriting other bits on the stack.

  Patch by Luqman Aden!

This should fix clang -O0 on i386 assigning garbage to floats, in
certain scenarios.

PR:		187437
Submitted by:	cebd@gmail.com
Obtained from:	http://llvm.org/viewvc/llvm-project?rev=217410&view=rev
MFC after:	3 days
This commit is contained in:
Dimitry Andric 2014-09-14 18:50:38 +00:00
parent 396b3e34b4
commit e42bbd58d9
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
contrib/llvm/lib/Target/X86/X86ISelLowering.cpp
View file

@ -300,6 +300,8 @@ void X86TargetLowering::resetOperationActions() {
setTruncStoreAction(MVT::i32, MVT::i8 , Expand);
setTruncStoreAction(MVT::i16, MVT::i8, Expand);
setTruncStoreAction(MVT::f64, MVT::f32, Expand);
// SETOEQ and SETUNE require checking two conditions.
setCondCodeAction(ISD::SETOEQ, MVT::f32, Expand);
setCondCodeAction(ISD::SETOEQ, MVT::f64, Expand);
@ -1011,8 +1013,6 @@ void X86TargetLowering::resetOperationActions() {
AddPromotedToType (ISD::SELECT, VT, MVT::v2i64);
}
setTruncStoreAction(MVT::f64, MVT::f32, Expand);
// Custom lower v2i64 and v2f64 selects.
setOperationAction(ISD::LOAD, MVT::v2f64, Legal);
setOperationAction(ISD::LOAD, MVT::v2i64, Legal);