llvm-reduce: Add pass to reduce instructions

Patch by Diego Treviño!

Differential Revision: https://reviews.llvm.org/D66263

llvm-svn: 372282

3 files changed, 28 insertions, 4 deletions

diff --git a/llvm/test/Reduce/Inputs/remove-bbs.py b/llvm/test/Reduce/Inputs/remove-bbs.py
index 099e8781396..71f099daaba 100755
--- a/llvm/test/Reduce/Inputs/remove-bbs.py
+++ b/llvm/test/Reduce/Inputs/remove-bbs.py
@@ -1,5 +1,4 @@
 import sys
-import re
 
 InterestingBBs = 0
 input = open(sys.argv[1], "r")
diff --git a/llvm/test/Reduce/Inputs/remove-global-vars.py b/llvm/test/Reduce/Inputs/remove-global-vars.py
index 81fbea937dd..1ae8b0e6e76 100755
--- a/llvm/test/Reduce/Inputs/remove-global-vars.py
+++ b/llvm/test/Reduce/Inputs/remove-global-vars.py
@@ -2,9 +2,17 @@
 
 import sys
 
+InterestingVar = 0
+
 input = open(sys.argv[1], "r")
 for line in input:
-  if "@interesting = global" in line:
-    sys.exit(0)
+  i = line.find(';')
+  if i >= 0:
+    line = line[:i]
+  if line.startswith("@interesting = global") or "@interesting" in line:
+    InterestingVar += 1
+
+if InterestingVar == 4:
+  sys.exit(0) # interesting!
 
-sys.exit(1) # IR isn't interesting
+sys.exit(1)
diff --git a/llvm/test/Reduce/Inputs/remove-instructions.py b/llvm/test/Reduce/Inputs/remove-instructions.py
new file mode 100755
index 00000000000..df4d85dd4f4
--- /dev/null
+++ b/llvm/test/Reduce/Inputs/remove-instructions.py
@@ -0,0 +1,17 @@
+import sys
+
+InterestingInstructions = 0
+
+input = open(sys.argv[1], "r")
+for line in input:
+  i = line.find(';')
+  if i >= 0:
+    line = line[:i]
+  if "%interesting" in line:
+    InterestingInstructions += 1
+  print InterestingInstructions
+
+if InterestingInstructions == 5:
+  sys.exit(0) # interesting!
+
+sys.exit(1)