[llvm] [RISCV] Support .option {no}exact (PR #122483)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,72 @@
+# RUN: llvm-mc -triple riscv32 -show-encoding -mattr=+c %s \
+# RUN:   | FileCheck -check-prefixes=CHECK,CHECK-ALIAS %s
+# RUN: llvm-mc -triple riscv32 -show-encoding -mattr=+c \
+# RUN:   -M no-aliases %s | FileCheck -check-prefixes=CHECK,CHECK-INST %s
+# RUN: llvm-mc -triple riscv32 -filetype=obj -mattr=+c %s \
+# RUN:   | llvm-objdump  --triple=riscv32 --mattr=+c --no-print-imm-hex -d - \
+# RUN:   | FileCheck -check-prefixes=CHECK-BYTES,CHECK-ALIAS %s
+# RUN: llvm-mc -triple riscv32 -filetype=obj -mattr=+c %s \
+# RUN:   | llvm-objdump  --triple=riscv32 --mattr=+c --no-print-imm-hex -d -M no-aliases - \
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MaskRay wrote:

Why do we need so many RUN lines? I think with  no-aliases, we do not tests without -M no-aliases (the instruction aliases are the primary concerns of other tests, not this test)

Could this and optin-exact-relaxation.s be combined?

https://github.com/llvm/llvm-project/pull/122483