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Hal Finkel 9e54b7093a [BDCE] Don't check demanded bits on unsized types 
To clear assumptions that are potentially invalid after trivialization, we need
to walk the use/def chain. Normally, the only way to reach an instruction with
an unsized type is via an instruction that has side effects (or otherwise will
demand its input bits). That would stop the walk. However, if we have a
readnone function that returns an unsized type (e.g., void), we must avoid
asking for the demanded bits of the function call's return value. A
void-returning readnone function is always dead (and so we can stop walking the
use/def chain here), but the check is necessary to avoid asserting.

Fixes PR34211.

llvm-svn: 311014
 		2017-08-16 16:09:22 +00:00
..
Analysis [CostModel][X86][XOP] Improve costs for XOP shuffles 2017-08-16 13:50:20 +00:00
Assembler [DI] Every DIGlobalVariable should have a type. 2017-08-16 13:39:07 +00:00
Bindings [llvm] Get rid of "%T" expansions 2017-08-15 20:29:24 +00:00
Bitcode Add strictfp attribute to prevent unwanted optimizations of libm calls 2017-08-14 21:15:13 +00:00
BugPoint
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CodeGen Revert "MachineInstr: Reason locally about some memory objects before going to AA." 2017-08-16 14:17:43 +00:00
DebugInfo [Verifier] Reject globals without a type associated. 2017-08-16 15:16:33 +00:00
DllTool [llvm-dlltool] Fix creating stdcall/fastcall import libraries for i386 2017-08-16 05:18:36 +00:00
Examples
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ExecutionEngine [llvm] Get rid of "%T" expansions 2017-08-15 20:29:24 +00:00
Feature Remove the BBVectorize pass. 2017-06-30 07:09:08 +00:00
FileCheck [llvm] Remove redundant check-prefix=CHECK from tests. NFC. 2017-07-17 17:32:45 +00:00
Instrumentation [sanitizer-coverage] Change cmp instrumentation to distinguish const operands 2017-08-10 15:00:13 +00:00
Integer
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JitListener
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LTO [llvm] Get rid of "%T" expansions 2017-08-15 20:29:24 +00:00
LibDriver [llvm] Get rid of "%T" expansions 2017-08-15 20:29:24 +00:00
Linker [DI] Every DIGlobalVariable should have a type. 2017-08-16 13:39:07 +00:00
MC [AMDGPU][MC][GFX9] Added op_sel support for v_mad_*16, v_fma_f16, v_div_fixup_f16 2017-08-16 15:16:32 +00:00
Object Revert archive-* tests from r310953, there were test failures. 2017-08-15 23:41:34 +00:00
ObjectYAML [codeview] Fix YAML for LF_TYPESERVER2 by hoisting PDB_UniqueId 2017-07-17 23:59:44 +00:00
Other [llvm] Get rid of "%T" expansions 2017-08-15 20:29:24 +00:00
SafepointIRVerifier [SafepointIRVerifier] Avoid false positives in GC verifier for compare between pointers 2017-07-07 13:02:29 +00:00
SymbolRewriter
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TableGen Revert r310919 - [globalisel][tablegen] Support zero-instruction emission. 2017-08-15 15:10:31 +00:00
ThinLTO/X86 [llvm] Get rid of "%T" expansions 2017-08-15 20:29:24 +00:00
Transforms [BDCE] Don't check demanded bits on unsized types 2017-08-16 16:09:22 +00:00
Unit Change remaining references to lit.util.capture to use subprocess.check_output. 2017-07-06 21:46:47 +00:00
Verifier Remove the obsolete offset parameter from @llvm.dbg.value 2017-07-28 20:21:02 +00:00
YAMLParser
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tools [llvm] Get rid of "%T" expansions 2017-08-15 20:29:24 +00:00
.clang-format
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CMakeLists.txt Reland "[LLVM][llvm-objcopy] Added basic plumbing to get things started" 2017-08-01 00:33:58 +00:00
TestRunner.sh
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lit.cfg Reland "[LLVM][llvm-objcopy] Added basic plumbing to get things started" 2017-08-01 00:33:58 +00:00
lit.site.cfg.in Correctly enable the llvm-mt tests, now that build flags changed. 2017-07-26 16:35:44 +00:00