[llvm] [RISCV] Add compress patterns for Xqcilia instructions with tied-operands (PR #147242)

[Sam Elliott via llvm-commits]

================
@@ -10,10 +10,14 @@
 # RUN:     | llvm-objdump --mattr=+experimental-xqcilia --no-print-imm-hex -d - \
 # RUN:     | FileCheck -check-prefix=CHECK-INST %s
 
+.option exact
+
 # CHECK-INST: qc.e.addai      s1, -1
 # CHECK-ENC: encoding: [0x9f,0x24,0xff,0xff,0xff,0xff]
 qc.e.addai x9, 4294967295
 
+.option noexact
----------------
lenary wrote:

Can you just turn exact mode off once, rather than around every instruction that "needs" it. i.e. the whole file should be like this

```
.option exact
<instruction testcases without compression>
.option noexact
<instruction testcases with compression>
```


https://github.com/llvm/llvm-project/pull/147242