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-rw-r--r--lib/Target/README.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index 284be24b67..26bc5e8319 100644
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -2,6 +2,13 @@ Target Independent Opportunities:
//===---------------------------------------------------------------------===//
+We should make the various target's "IMPLICIT_DEF" instructions be a single
+target-independent opcode like TargetInstrInfo::INLINEASM. This would allow
+us to eliminate the TargetInstrDesc::isImplicitDef() method, and would allow
+us to avoid having to define this for every target for every register class.
+
+//===---------------------------------------------------------------------===//
+
With the recent changes to make the implicit def/use set explicit in
machineinstrs, we should change the target descriptions for 'call' instructions
so that the .td files don't list all the call-clobbered registers as implicit