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-rw-r--r--llvm/docs/LangRef.rst6
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
index d9de43e3e4d..1b0d0cf5e6d 100644
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -3590,8 +3590,10 @@ SystemZ:
- ``K``: An immediate signed 16-bit integer.
- ``L``: An immediate signed 20-bit integer.
- ``M``: An immediate integer 0x7fffffff.
-- ``Q``, ``R``, ``S``, ``T``: A memory address operand, treated the same as
- ``m``, at the moment.
+- ``Q``, ``R``: A memory address operand with a base address and a 12-bit
+ immediate unsigned displacement.
+- ``S``, ``T``: A memory address operand with a base address and a 20-bit
+ immediate signed displacement.
- ``r`` or ``d``: A 32, 64, or 128-bit integer register.
- ``a``: A 32, 64, or 128-bit integer address register (excludes R0, which in an
address context evaluates as zero).
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