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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 | 9511a460d8dc2f5979365ad863e9e6c514043101 (patch) | |
| tree | 1f5beb81a7d57a026e12918d120d038966b38252 /lib/Target/X86/X86InstrControl.td | |
| parent | baa74e4b35d96ee154c68fa6d204d854cb45f969 (diff) | |
| download | llvm-9511a460d8dc2f5979365ad863e9e6c514043101.tar.gz llvm-9511a460d8dc2f5979365ad863e9e6c514043101.tar.bz2 llvm-9511a460d8dc2f5979365ad863e9e6c514043101.tar.xz | |
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162592 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86InstrControl.td')
| -rw-r--r-- | lib/Target/X86/X86InstrControl.td | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/Target/X86/X86InstrControl.td b/lib/Target/X86/X86InstrControl.td index b0c27c8827..bfe954114c 100644 --- a/lib/Target/X86/X86InstrControl.td +++ b/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), |