[llvm] r215823 - [shuffle] Teach the shufflevector fuzzer to support fixed element types.
Chandler Carruth
chandlerc at gmail.com
Sat Aug 16 17:40:31 PDT 2014
Author: chandlerc
Date: Sat Aug 16 19:40:31 2014
New Revision: 215823
URL: http://llvm.org/viewvc/llvm-project?rev=215823&view=rev
Log:
[shuffle] Teach the shufflevector fuzzer to support fixed element types.
I'm using this to try to find more minimal test cases by re-fuzzing
within a specific domain once errors are found.
Modified:
llvm/trunk/utils/shuffle_fuzz.py
Modified: llvm/trunk/utils/shuffle_fuzz.py
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/shuffle_fuzz.py?rev=215823&r1=215822&r2=215823&view=diff
==============================================================================
--- llvm/trunk/utils/shuffle_fuzz.py (original)
+++ llvm/trunk/utils/shuffle_fuzz.py Sat Aug 16 19:40:31 2014
@@ -20,6 +20,7 @@ import sys
import uuid
def main():
+ element_types=['i8', 'i16', 'i32', 'i64', 'f32', 'f64']
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('-v', '--verbose', action='store_true',
help='Show verbose output')
@@ -31,26 +32,31 @@ def main():
help='Include blends of two input vectors')
parser.add_argument('--fixed-bit-width', type=int, choices=[128, 256],
help='Specify a fixed bit width of vector to test')
+ parser.add_argument('--fixed-element-type', choices=element_types,
+ help='Specify a fixed element type to test')
parser.add_argument('--triple',
help='Specify a triple string to include in the IR')
args = parser.parse_args()
random.seed(args.seed)
+ if args.fixed_element_type is not None:
+ element_types=[args.fixed_element_type]
+
if args.fixed_bit_width is not None:
if args.fixed_bit_width == 128:
+ width_map={'i64': 2, 'i32': 4, 'i16': 8, 'i8': 16, 'f64': 2, 'f32': 4}
(width, element_type) = random.choice(
- [(2, 'i64'), (4, 'i32'), (8, 'i16'), (16, 'i8'),
- (2, 'f64'), (4, 'f32')])
+ [(width_map[t], t) for t in element_types])
elif args.fixed_bit_width == 256:
- (width, element_type) = random.choice([
- (4, 'i64'), (8, 'i32'), (16, 'i16'), (32, 'i8'),
- (4, 'f64'), (8, 'f32')])
+ width_map={'i64': 4, 'i32': 8, 'i16': 16, 'i8': 32, 'f64': 4, 'f32': 8}
+ (width, element_type) = random.choice(
+ [(width_map[t], t) for t in element_types])
else:
sys.exit(1) # Checked above by argument parsing.
else:
width = random.choice([2, 4, 8, 16, 32, 64])
- element_type = random.choice(['i8', 'i16', 'i32', 'i64', 'f32', 'f64'])
+ element_type = random.choice(element_types)
element_modulus = {
'i8': 1 << 8, 'i16': 1 << 16, 'i32': 1 << 32, 'i64': 1 << 64,
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