[PATCH] D29235: [X86] Added INT1 instruction and fixed register usage.

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


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Comment at: lib/Target/X86/X86InstrSystem.td:35
+// Interrupt and SysCall Instructions.
+let Uses = [ESP, EFLAGS], Defs = [ESP, EFLAGS] in {
+  def INTO : I<0xce, RawFrm, (outs), (ins), "into", []>;
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The instructions don't really modify ESP or EFLAGS. I would expect them to be restored when the interrupt handler returned. So from the perspective of the code with the INT insturction they aren't changed.


Repository:
  rL LLVM

https://reviews.llvm.org/D29235