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[SPARC][IAS] Add illtrap alias for unimp #105928

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Merged
merged 2 commits into from
Aug 29, 2024
Merged

[SPARC][IAS] Add illtrap alias for unimp #105928

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[SPARC][IAS] Add `illtrap` alias for `unimp`
koachan Aug 24, 2024
842b98e
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koachan Aug 24, 2024
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4 changes: 4 additions & 0 deletions llvm/lib/Target/Sparc/SparcInstrAliases.td
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Expand Up @@ -601,6 +601,10 @@ def : InstAlias<"flush", (FLUSH), 0>;
// unimp -> unimp 0
def : InstAlias<"unimp", (UNIMP 0), 0>;

// Not in spec, but we follow Solaris behavior of having `illtrap`
// interchangeable with `unimp` all the time.
def : MnemonicAlias<"illtrap", "unimp">;

def : MnemonicAlias<"iflush", "flush">;

def : MnemonicAlias<"stub", "stb">;
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6 changes: 6 additions & 0 deletions llvm/test/MC/Sparc/sparc-misc-instructions.s
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Expand Up @@ -6,3 +6,9 @@

! CHECK: unimp 0 ! encoding: [0x00,0x00,0x00,0x00]
unimp 0

! CHECK: unimp 0 ! encoding: [0x00,0x00,0x00,0x00]
illtrap

! CHECK: unimp 0 ! encoding: [0x00,0x00,0x00,0x00]
illtrap 0
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