[utils][mips] Add support for mips for update_llc_checks.py

Simon Dardis · Simon Dardis · commit 9d6856526240 · 2017-11-26T19:22:44.000Z
Add support for mips, particularly skipping the matching of .frame, .(f)mask and LLVM's usage of the .set no(reorder|at|macro) directives. Reviewers: spatel Differential Revision: https://reviews.llvm.org/D40268 llvm-svn: 319001
diff --git a/llvm/utils/update_llc_test_checks.py b/llvm/utils/update_llc_test_checks.py
@@ -47,6 +47,15 @@ def llc(args, cmd_args, ir):
      r'.Lfunc_end[0-9]+:\n',
      flags=(re.M | re.S))
 
+ASM_FUNCTION_MIPS_RE = re.compile(
+    r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n[^:]*?' # f: (name of func)
+    r'(?:^[ \t]+\.(frame|f?mask|set).*?\n)+'  # Mips+LLVM standard asm prologue
+    r'(?P<body>.*?)\n'                        # (body of the function)
+    r'(?:^[ \t]+\.(set|end).*?\n)+'           # Mips+LLVM standard asm epilogue
+    r'(\$|\.L)func_end[0-9]+:\n',             # $func_end0: (mips32 - O32) or
+                                              # .Lfunc_end0: (mips64 - NewABI)
+    flags=(re.M | re.S))
+
 ASM_FUNCTION_PPC_RE = re.compile(
     r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n'
     r'\.Lfunc_begin[0-9]+:\n'
@@ -141,6 +150,16 @@ def scrub_asm_powerpc64(asm, args):
   asm = SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
   return asm
 
+def scrub_asm_mips(asm, args):
+  # Scrub runs of whitespace out of the assembly, but leave the leading
+  # whitespace in place.
+  asm = SCRUB_WHITESPACE_RE.sub(r' ', asm)
+  # Expand the tabs used for indentation.
+  asm = string.expandtabs(asm, 2)
+  # Strip trailing whitespace.
+  asm = SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
+  return asm
+
 def scrub_asm_riscv(asm, args):
   # Scrub runs of whitespace out of the assembly, but leave the leading
   # whitespace in place.
@@ -175,6 +194,7 @@ def build_function_body_dictionary(raw_tool_output, triple, prefixes, func_dict,
       'thumb-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
       'thumbv8-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
       'armeb-eabi': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
+      'mips': (scrub_asm_mips, ASM_FUNCTION_MIPS_RE),
       'powerpc64': (scrub_asm_powerpc64, ASM_FUNCTION_PPC_RE),
       'powerpc64le': (scrub_asm_powerpc64, ASM_FUNCTION_PPC_RE),
       'riscv32': (scrub_asm_riscv, ASM_FUNCTION_RISCV_RE),
