llvm/test
David Majnemer 505187a9bd InstCombine: Don't miscompile X % ((Pow2 << A) >>u B)
We assumed that A must be greater than B because the right hand side of
a remainder operator must be nonzero.

However, it is possible for A to be less than B if Pow2 is a power of
two greater than 1.

Take for example:
i32 %A = 0
i32 %B = 31
i32 Pow2 = 2147483648

((Pow2 << 0) >>u 31) is non-zero but A is less than B.

This fixes PR21274.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219713 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-14 20:28:40 +00:00
..
Analysis This patch teaches ScalarEvolution to pick and use !range metadata. 2014-10-10 21:22:34 +00:00
Assembler Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
Bindings Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
Bitcode Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
BugPoint Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
CodeGen Reapply "R600: Add new intrinsic to read work dimensions" 2014-10-14 20:05:26 +00:00
DebugInfo [dwarfdump] Prettyprint DW_AT_APPLE_property_attribute bitfield values. 2014-10-10 15:51:10 +00:00
ExecutionEngine [mips] Remove XFAIL from two XPASS'ing tests on the llvm-mips-linux builder 2014-10-03 08:49:44 +00:00
Feature Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
FileCheck FileCheck: Add a flag to allow checking empty input 2014-08-07 18:40:37 +00:00
Instrumentation [asan-asm-instrumentation] Fixed memory references which includes %rsp as a base or an index register. 2014-10-13 09:37:47 +00:00
Integer
JitListener Revert "Revert "DI: Fold constant arguments into a single MDString"" 2014-10-03 20:01:09 +00:00
Linker [dwarfdump] Print the name for referenced specification of abstract_origin DIEs. 2014-10-06 03:36:31 +00:00
LTO LTO: Add missing target triple from r218784 2014-10-01 18:49:58 +00:00
MC [AVX512] Extended avx512_binop_rm to DQ/VL subsets. 2014-10-14 15:13:56 +00:00
Object Suppress llvm-ar's MRI tests for now on win32, since line_iterator is incompatible to CRLF. 2014-10-11 22:21:27 +00:00
Other [lit] Parse all strings as UTF-8 rather than ASCII. 2014-09-12 16:46:05 +00:00
TableGen [AVX512] Added intrinsics for VPCMPEQB and VPCMPEQW. 2014-09-30 11:32:22 +00:00
tools Add VS2012-generated test inputs for test/tools/llvm-readobj/codeview-linetables.test 2014-10-13 17:03:13 +00:00
Transforms InstCombine: Don't miscompile X % ((Pow2 << A) >>u B) 2014-10-14 20:28:40 +00:00
Unit
Verifier Verifier: Don't reject varargs callee cleanup functions 2014-08-29 21:25:28 +00:00
YAMLParser
.clang-format
CMakeLists.txt Add LLVMgold target to test dependencies. 2014-09-10 22:20:49 +00:00
lit.cfg llvm/test/lit.cfg: Suppress dwarf stuff for targeting x86_64-mingw32 while investigating since r219108. 2014-10-06 23:29:06 +00:00
lit.site.cfg.in Add missing Interpreter intrinsic lowering for sin, cos and ceil 2014-08-08 15:00:12 +00:00
Makefile Delete support for AuroraUX. 2014-08-14 15:15:09 +00:00
Makefile.tests
TestRunner.sh