[UpdateTestChecks] Add support for SPIRV in update_llc_test_checks.py (llvm#66213)

pmatos · web-flow · commit 0495cd89fc6e · 2023-09-21T12:51:42.000+02:00
Support for SPIRV added, updated test SPV_INTEL_optnone.ll using the script. Previously https://reviews.llvm.org/D157858
diff --git a/llvm/test/CodeGen/SPIRV/extensions/SPV_INTEL_optnone.ll b/llvm/test/CodeGen/SPIRV/extensions/SPV_INTEL_optnone.ll
@@ -1,19 +1,25 @@
-; RUN: llc -O0 -mtriple=spirv32-unknown-unknown --spirv-extensions=SPV_INTEL_optnone %s -o - | FileCheck %s --check-prefix=CHECK-EXTENSION
-; RUN: llc -O0 -mtriple=spirv32-unknown-unknown %s -o - | FileCheck %s --check-prefix=CHECK-NO-EXTENSION
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
+; RUN: llc -O0 -mtriple=spirv32-unknown-unknown --spirv-extensions=SPV_INTEL_optnone %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-EXTENSION
+; RUN: llc -O0 -mtriple=spirv32-unknown-unknown %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-NO-EXTENSION
 
 ; CHECK-EXTENSION: OpCapability OptNoneINTEL
 ; CHECK-EXTENSION: OpExtension "SPV_INTEL_optnone"
 ; CHECK-NO-EXTENSION-NOT: OpCapability OptNoneINTEL
 ; CHECK-NO-EXTENSION-NOT: OpExtension "SPV_INTEL_optnone"
 
-;; Per SPIR-V spec:
-;; FunctionControlDontInlineMask = 0x2 (2)
-; CHECK-EXTENSION: %[[#]] = OpFunction %[[#]] DontInline
-
 ; Function Attrs: nounwind optnone noinline
 define spir_func void @_Z3foov() #0 {
+; CHECK-LABEL: _Z3foov
+; CHECK:       %4 = OpFunction %2 DontInline %3
+; CHECK-NEXT:    %5 = OpLabel
+; CHECK-NEXT:    OpReturn
+; CHECK-NEXT:    OpFunctionEnd
 entry:
   ret void
 }
 
 attributes #0 = { nounwind optnone noinline }
+
+;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
+; CHECK-EXTENSION: {{.*}}
+; CHECK-NO-EXTENSION: {{.*}}
diff --git a/llvm/utils/UpdateTestChecks/asm.py b/llvm/utils/UpdateTestChecks/asm.py
@@ -15,6 +15,11 @@ class string:
 # RegEx: this is where the magic happens.
 
 ##### Assembly parser
+#
+# The set of per-arch regular expressions define several groups.
+# The required groups are "func" (function name) and "body" (body of the function).
+# Although some backends require some additional groups like: "directives"
+# and "func_name_separator"
 
 ASM_FUNCTION_X86_RE = re.compile(
     r'^_?(?P<func>[^:]+):[ \t]*#+[ \t]*(@"?(?P=func)"?| -- Begin function (?P=func))\n(?:\s*\.?Lfunc_begin[^:\n]*:\n)?'
@@ -197,6 +202,14 @@ class string:
     flags=(re.M | re.S),
 )
 
+# We parse the function name from OpName, and grab the variable name 'var'
+# for this function. Then we match that when the variable is assigned with
+# OpFunction and match its body.
+ASM_FUNCTION_SPIRV_RE = re.compile(
+    r'OpName (?P<var>%[0-9]+) "(?P<func>[^"]+)(?P<func_name_separator>)".*(?P<body>(?P=var) = OpFunction.+?OpFunctionEnd)',
+    flags=(re.M | re.S),
+)
+
 ASM_FUNCTION_VE_RE = re.compile(
     r"^_?(?P<func>[^:]+):[ \t]*#+[ \t]*@(?P=func)\n"
     r"(?:\s*\.?L(?P=func)\$local:\n)?"  # optional .L<func>$local: due to -fno-semantic-interposition
@@ -433,6 +446,17 @@ def scrub_asm_sparc(asm, args):
     return asm
 
 
+def scrub_asm_spirv(asm, args):
+    # Scrub runs of whitespace out of the assembly, but leave the leading
+    # whitespace in place.
+    asm = common.SCRUB_WHITESPACE_RE.sub(r" ", asm)
+    # Expand the tabs used for indentation.
+    asm = string.expandtabs(asm, 2)
+    # Strip trailing whitespace.
+    asm = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r"", asm)
+    return asm
+
+
 def scrub_asm_systemz(asm, args):
     # Scrub runs of whitespace out of the assembly, but leave the leading
     # whitespace in place.
@@ -547,6 +571,8 @@ def get_run_handler(triple):
         "riscv64": (scrub_asm_riscv, ASM_FUNCTION_RISCV_RE),
         "lanai": (scrub_asm_lanai, ASM_FUNCTION_LANAI_RE),
         "sparc": (scrub_asm_sparc, ASM_FUNCTION_SPARC_RE),
+        "spirv32": (scrub_asm_spirv, ASM_FUNCTION_SPIRV_RE),
+        "spirv64": (scrub_asm_spirv, ASM_FUNCTION_SPIRV_RE),
         "s390x": (scrub_asm_systemz, ASM_FUNCTION_SYSTEMZ_RE),
         "wasm32": (scrub_asm_wasm, ASM_FUNCTION_WASM_RE),
         "wasm64": (scrub_asm_wasm, ASM_FUNCTION_WASM_RE),
