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-rw-r--r--lib/Target/Mips/MSA.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/Mips/MSA.txt b/lib/Target/Mips/MSA.txt
index a4f320ac00..a6a7dda88e 100644
--- a/lib/Target/Mips/MSA.txt
+++ b/lib/Target/Mips/MSA.txt
@@ -32,3 +32,8 @@ ilvr.d, ilvod.d, pckod.d:
splati.w:
It is not possible to emit splati.w since shf.w covers the same cases.
shf.w will be emitted instead.
+
+copy_s.w
+ On MIPS32, the copy_u.d intrinsic will emit this instruction instead of
+ copy_u.w. This is semantically equivalent since the general-purpose
+ register file is 32-bits wide.