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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-08-24 20:52:44 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-08-24 20:52:44 +0000 |
| commit | b50cf8b30f490bd45b8a1f8b0849ef8a7c67dc23 (patch) | |
| tree | db3e3b4ef25604b8376c1af395d6f95207537c3e /llvm/lib/Target | |
| parent | 10cdd09318eb5a074f31fec1a1087c88a229354d (diff) | |
| download | bcm5719-llvm-b50cf8b30f490bd45b8a1f8b0849ef8a7c67dc23.tar.gz bcm5719-llvm-b50cf8b30f490bd45b8a1f8b0849ef8a7c67dc23.zip | |
Mark X86::RET and RETI instructions as variadic.
There is special magic happening when returning floating point values on
the x87 stack. The RET instructions get extra f80 operands.
llvm-svn: 162592
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrControl.td | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86InstrControl.td b/llvm/lib/Target/X86/X86InstrControl.td index b0c27c88271..bfe954114c5 100644 --- a/llvm/lib/Target/X86/X86InstrControl.td +++ b/llvm/lib/Target/X86/X86InstrControl.td @@ -16,15 +16,18 @@ // // Return instructions. +// +// The X86retflag return instructions are variadic because we may add ST0 and +// ST1 arguments when returning values on the x87 stack. let isTerminator = 1, isReturn = 1, isBarrier = 1, hasCtrlDep = 1, FPForm = SpecialFP in { - def RET : I <0xC3, RawFrm, (outs), (ins), + def RET : I <0xC3, RawFrm, (outs), (ins variable_ops), "ret", [(X86retflag 0)], IIC_RET>; def RETW : I <0xC3, RawFrm, (outs), (ins), "ret{w}", [], IIC_RET>, OpSize; - def RETI : Ii16<0xC2, RawFrm, (outs), (ins i16imm:$amt), + def RETI : Ii16<0xC2, RawFrm, (outs), (ins i16imm:$amt, variable_ops), "ret\t$amt", [(X86retflag timm:$amt)], IIC_RET_IMM>; def RETIW : Ii16<0xC2, RawFrm, (outs), (ins i16imm:$amt), |
