From 7e12a601b8e9d90e5a7498523a9023c8c47bc4ca Mon Sep 17 00:00:00 2001 From: Damien George Date: Thu, 8 Oct 2015 13:02:00 +0100 Subject: py/compile: Fix edge case when constant-folding negation of integer. Also adds tests specifically for testing constant folding. --- tests/basics/int_constfolding.py | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 tests/basics/int_constfolding.py (limited to 'tests/basics/int_constfolding.py') diff --git a/tests/basics/int_constfolding.py b/tests/basics/int_constfolding.py new file mode 100644 index 0000000000..c01f964daa --- /dev/null +++ b/tests/basics/int_constfolding.py @@ -0,0 +1,40 @@ +# tests int constant folding in compiler + +# positive +print(+1) +print(+100) + +# negation +print(-1) +print(-(-1)) +print(-0x3fffffff) # 32-bit edge case +print(-0x3fffffffffffffff) # 64-bit edge case +print(-(-0x3fffffff - 1)) # 32-bit edge case +print(-(-0x3fffffffffffffff - 1)) # 64-bit edge case + +# 1's complement +print(~0) +print(~1) +print(~-1) +print(~0x3fffffff) # 32-bit edge case +print(~0x3fffffffffffffff) # 64-bit edge case +print(~(-0x3fffffff - 1)) # 32-bit edge case +print(~(-0x3fffffffffffffff - 1)) # 64-bit edge case + +# addition +print(1 + 2) + +# subtraction +print(1 - 2) +print(2 - 1) + +# multiplication +print(1 * 2) +print(123 * 456) + +# floor div and modulo +print(123 // 7, 123 % 7) +print(-123 // 7, -123 % 7) +print(123 // -7, 123 % -7) +print(-123 // -7, -123 % -7) + -- cgit v1.2.3