Replace long relative paths with more suitable Lit substitutions

Author: skatrak

mlir/test/lit.cfg.py

@@ -49,6 +49,7 @@
 
 config.substitutions.append(("%PATH%", config.environment["PATH"]))
 config.substitutions.append(("%shlibext", config.llvm_shlib_ext))
+config.substitutions.append(("%llvm_src_root", config.llvm_src_root))
 config.substitutions.append(("%mlir_src_root", config.mlir_src_root))
 config.substitutions.append(("%host_cxx", config.host_cxx))
 config.substitutions.append(("%host_cc", config.host_cc))

mlir/test/lit.site.cfg.py.in

@@ -3,6 +3,7 @@
 import sys
 
 config.target_triple = "@LLVM_TARGET_TRIPLE@"
+config.llvm_src_root = "@LLVM_SOURCE_DIR@"
 config.llvm_tools_dir = lit_config.substitute("@LLVM_TOOLS_DIR@")
 config.llvm_shlib_ext = "@SHLIBEXT@"
 config.llvm_shlib_dir = lit_config.substitute(path(r"@SHLIBDIR@"))

mlir/test/mlir-tblgen/openmp-ops-verify.td

@@ -4,10 +4,10 @@
 // Run tablegen to generate OmpCommon.td in temp directory first.
 // RUN: mkdir -p %t/mlir/Dialect/OpenMP
 // RUN: mlir-tblgen --gen-directive-decl --directives-dialect=OpenMP \
-// RUN:   %S/../../../llvm/include/llvm/Frontend/OpenMP/OMP.td \
-// RUN:   -I %S/../../../llvm/include > %t/mlir/Dialect/OpenMP/OmpCommon.td
+// RUN:   %llvm_src_root/include/llvm/Frontend/OpenMP/OMP.td \
+// RUN:   -I %llvm_src_root/include > %t/mlir/Dialect/OpenMP/OmpCommon.td
 
-// RUN: not mlir-tblgen -verify-openmp-ops -I %S/../../include -I %t %s 2>&1 | FileCheck %s
+// RUN: not mlir-tblgen -verify-openmp-ops -I %mlir_src_root/include -I %t %s 2>&1 | FileCheck %s
 
 include "mlir/Dialect/OpenMP/OpenMPOpBase.td"
 

mlir/test/mlir-tblgen/openmp-ops.td

@@ -6,11 +6,11 @@
 // Run tablegen to generate OmpCommon.td in temp directory first.
 // RUN: mkdir -p %t/mlir/Dialect/OpenMP
 // RUN: mlir-tblgen --gen-directive-decl --directives-dialect=OpenMP \
-// RUN:   %S/../../../llvm/include/llvm/Frontend/OpenMP/OMP.td \
-// RUN:   -I %S/../../../llvm/include > %t/mlir/Dialect/OpenMP/OmpCommon.td
+// RUN:   %llvm_src_root/include/llvm/Frontend/OpenMP/OMP.td \
+// RUN:   -I %llvm_src_root/include > %t/mlir/Dialect/OpenMP/OmpCommon.td
 
-// RUN: mlir-tblgen -gen-op-decls -I %S/../../include -I %t %s | FileCheck %s --check-prefix=DECL
-// RUN: mlir-tblgen -gen-op-doc -I %S/../../include -I %t %s | FileCheck %s --check-prefix=DOC
+// RUN: mlir-tblgen -gen-op-decls -I %mlir_src_root/include -I %t %s | FileCheck %s --check-prefix=DECL
+// RUN: mlir-tblgen -gen-op-doc -I %mlir_src_root/include -I %t %s | FileCheck %s --check-prefix=DOC
 
 include "mlir/Dialect/OpenMP/OpenMPOpBase.td"