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llvm-project/llvm/test
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Evan Cheng 493eb32ff4 Instcombine was transforming: 
%shr = lshr i64 %key, 3
  %0 = load i64* %val, align 8
  %sub = add i64 %0, -1
  %and = and i64 %sub, %shr
  ret i64 %and

to:
  %shr = lshr i64 %key, 3
  %0 = load i64* %val, align 8
  %sub = add i64 %0, 2305843009213693951
  %and = and i64 %sub, %shr
  ret i64 %and

The demanded bit optimization is actually a pessimization because add -1 would
be codegen'ed as a sub 1. Teach the demanded constant shrinking optimization
to check for negated constant to make sure it is actually reducing the width
of the constant.

rdar://11793464

llvm-svn: 160101
 		2012-07-12 01:45:35 +00:00
..
Analysis Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
Archive Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
Assembler Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
Bindings/Ocaml Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
Bitcode Fixed diff comparison. 2012-07-11 21:02:57 +00:00
BugPoint Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
CodeGen ARM: Fix optimizeCompare to correctly check safe condition. 2012-07-11 22:51:44 +00:00
DebugInfo Fix PR13202 and a regtest. 2012-07-06 08:45:08 +00:00
ExecutionEngine Add Mips to the list of target architectures for the MCJIT tests. 2012-06-21 20:23:32 +00:00
Feature Convert the uses of '|&' to use '2>&1 |' instead, which works on old 2012-07-02 18:37:59 +00:00
Instrumentation [asan] instrument cmpxchg and atomicrmw 2012-05-30 09:04:06 +00:00
Integer Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
Linker Convert the uses of '|&' to use '2>&1 |' instead, which works on old 2012-07-02 18:37:59 +00:00
MC Fix instruction description of VMOV (between two ARM core registers and two single-precision resiters) (and do it properly this time! 2012-07-10 12:51:09 +00:00
Object Add relocation types for Hexagon processor; patch by Sidney Manning <sidneym@codeaurora.org> 2012-06-23 14:46:18 +00:00
Other Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
Scripts This allows hello world to be compiled for Mips 64 direct object. 2012-06-27 22:48:25 +00:00
TableGen Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
Transforms Instcombine was transforming: 2012-07-12 01:45:35 +00:00
Unit tests: Rip out a bunch of now unused test code relating to use of llvm-gcc in LLVM tests. 2011-10-27 20:59:26 +00:00
Verifier Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
YAMLParser Convert the uses of '|&' to use '2>&1 |' instead, which works on old 2012-07-02 18:37:59 +00:00
CMakeLists.txt Extend the workaround from r159593 to cover a few explicit alias 2012-07-02 21:45:22 +00:00
Makefile Remove 'site.exp' building from both CMake and configure+make. 2012-06-28 00:16:51 +00:00
Makefile.tests
…
TestRunner.sh
…
lit.cfg llvm/test/lit.cfg: Retweak for Win32 to fix testing. 2012-07-03 03:59:34 +00:00
lit.site.cfg.in Remove 'site.exp' building from both CMake and configure+make. 2012-06-28 00:16:51 +00:00