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Fix Thumb2 function call isel. Thumb1 and Thumb2 should share the same

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instructions for calls since BL and BLX are always 32-bit long and BX is always
16-bit long.

Also, we should be using BLX to call external function stubs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77756 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2009-08-01 00:16:10 +00:00
parent 675fb65bf4
commit b620724e61
7 changed files with 61 additions and 73 deletions
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6
lib/Target/ARM/ARMISelLowering.cpp
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@@ -263,7 +263,7 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM)
} else {
setOperationAction(ISD::MUL, MVT::i64, Expand);
setOperationAction(ISD::MULHU, MVT::i32, Expand);
if (!Subtarget->isThumb1Only() && !Subtarget->hasV6Ops())
if (!Subtarget->hasV6Ops())
setOperationAction(ISD::MULHS, MVT::i32, Expand);
}
setOperationAction(ISD::SHL_PARTS, MVT::i32, Expand);
@@ -985,8 +985,8 @@ SDValue ARMTargetLowering::LowerCALL(SDValue Op, SelectionDAG &DAG) {
// FIXME: handle tail calls differently.
unsigned CallOpc;
if (Subtarget->isThumb1Only()) {
if (!Subtarget->hasV5TOps() && (!isDirect || isARMFunc))
if (Subtarget->isThumb()) {
if ((!isDirect || isARMFunc) && !Subtarget->hasV5TOps())
CallOpc = ARMISD::CALL_NOLINK;
else
CallOpc = isARMFunc ? ARMISD::CALL : ARMISD::tCALL;