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https://github.com/c64scene-ar/llvm-6502.git
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implement the iret suite of instructions properly,
fixing rdar://8403974 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113349 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -627,6 +627,7 @@ ParseInstruction(StringRef Name, SMLoc NameLoc,
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.Case("repe", "rep")
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.Case("repz", "rep")
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.Case("repnz", "repne")
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.Case("iret", "iretl")
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.Case("push", Is64Bit ? "pushq" : "pushl")
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.Case("pushf", Is64Bit ? "pushfq" : "pushfl")
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.Case("popf", Is64Bit ? "popfq" : "popfl")
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@ -117,7 +117,8 @@ def ADJCALLSTACKUP64 : I<0, Pseudo, (outs), (ins i32imm:$amt1, i32imm:$amt2),
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}
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// Interrupt Instructions
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def IRET64 : RI<0xcf, RawFrm, (outs), (ins), "iret{q}", []>;
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def IRET64 : RI<0xcf, RawFrm, (outs), (ins), "iretq", []>,
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Requires<[In64BitMode]>;
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//===----------------------------------------------------------------------===//
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// Call Instructions...
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@ -601,8 +601,8 @@ def INT3 : I<0xcc, RawFrm, (outs), (ins), "int3",
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[(int_x86_int (i8 3))]>;
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def INT : Ii8<0xcd, RawFrm, (outs), (ins i8imm:$trap), "int\t$trap",
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[(int_x86_int imm:$trap)]>;
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def IRET16 : I<0xcf, RawFrm, (outs), (ins), "iret{w}", []>, OpSize;
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def IRET32 : I<0xcf, RawFrm, (outs), (ins), "iret{l}", []>;
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def IRET16 : I<0xcf, RawFrm, (outs), (ins), "iretw", []>, OpSize;
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def IRET32 : I<0xcf, RawFrm, (outs), (ins), "iret{l|d}", []>;
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// PIC base construction. This expands to code that looks like this:
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// call $next_inst
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@ -434,3 +434,13 @@ L1:
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// CHECK: jecxz L1
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// CHECK: encoding: [0xe3,A]
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// rdar://8403974
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iret
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// CHECK: iretl
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// CHECK: encoding: [0xcf]
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iretw
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// CHECK: iretw
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// CHECK: encoding: [0x66,0xcf]
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iretl
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// CHECK: iretl
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// CHECK: encoding: [0xcf]
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@ -185,3 +185,20 @@ rep movsl
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// CHECK: encoding: [0xf3]
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// CHECK: movsl
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// CHECK: encoding: [0xa5]
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// rdar://8403974
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iret
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// CHECK: iretl
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// CHECK: encoding: [0xcf]
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iretw
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// CHECK: iretw
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// CHECK: encoding: [0x66,0xcf]
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iretl
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// CHECK: iretl
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// CHECK: encoding: [0xcf]
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iretq
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// CHECK: iretq
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// CHECK: encoding: [0x48,0xcf]
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