SimpleRegisterCoalescing::JoinIntervals() uses CoalescerPair to determine if a
copy is coalescable, and in very rare cases it can return true where LHS is not
live - the coalescable copy can come from an alias of the physreg in LHS.
llvm-svn: 106021
Fixed the Disassemble arguments so you can't specify start address or name in multiple ways.
Fixed the command line input so you can specify the filename without "-f" even if you use other options.
llvm-svn: 106020
Fix string concatenation to treat escapes in concatenated strings that
are wide because of other string chunks to process the escapes as wide
themselves. Before we would warn about and miscompile the attached testcase.
This fixes rdar://8040728 - miscompile + warning: hex escape sequence out of range
llvm-svn: 106012
Currently, all AST consumers are located in the Frontend library,
meaning that in a shared library configuration, Frontend has a
dependency on Rewrite, Checker and CodeGen. This is suboptimal for
clients which only wish to make use of the frontend. CodeGen in
particular introduces a large number of unwanted dependencies.
This patch breaks the dependency by moving all AST consumers with
dependencies on Rewrite, Checker and/or CodeGen to their respective
libraries. The patch therefore introduces dependencies in the other
direction (i.e. from Rewrite, Checker and CodeGen to Frontend).
After applying this patch, Clang builds correctly using CMake and
shared libraries ("cmake -DBUILD_SHARED_LIBS=ON").
N.B. This patch includes file renames which are indicated in the
patch body.
Changes in this revision of the patch:
- Fixed some copy-paste mistakes in the header files
- Modified certain aspects of the coding to comply with the LLVM
Coding Standards
llvm-svn: 106010
combined to an insert_subreg, i.e., where the destination register is larger
than the source. We need to check that the subregs can be composed for that
case in a symmetrical way to the case when the destination is smaller.
llvm-svn: 106004
Early clobbers defining a virtual register were first alocated to a physreg and
then processed as a physreg EC, spilling the virtreg.
This fixes PR7382.
llvm-svn: 105998
Given a copy instruction, CoalescerPair can determine which registers to
coalesce in order to eliminate the copy. It deals with all the subreg fun to
determine a tuple (DstReg, SrcReg, SubIdx) such that:
- SrcReg is a virtual register that will disappear after coalescing.
- DstReg is a virtual or physical register whose live range will be extended.
- SubIdx is 0 when DstReg is a physical register.
- SrcReg can be joined with DstReg:SubIdx.
CoalescerPair::isCoalescable() determines if another copy instruction is
compatible with the same tuple. This fixes some NEON miscompilations where
shuffles are getting coalesced as if they were copies.
The CoalescerPair class will replace a lot of the spaghetti logic in JoinCopy
later.
llvm-svn: 105997
Stmt* such as those which occur in ?: . Fixes PR7378.
Also, generally whip the code into shape fixing several coding style violations.
llvm-svn: 105992
replacing the overly conservative checks that I had introduced recently to
deal with correctness issues. This makes a pretty noticable difference
in our testcases where reg_sequences are used. I've updated one test to
check that we no longer emit the unnecessary subreg moves.
llvm-svn: 105991
containing the target address, an input, into an output. I don't
think this actually broke anything on x86 (it does on ARM), but
it's wrong.
llvm-svn: 105986
source code location instead of on the note. Previously we generated:
<inline asm>:1:2: error: unrecognized instruction
barf
^
t.c:4:8: note: generated from here
asm ("barf");
^
Now we generate:
t.c:4:8: error: unrecognized instruction
asm ("barf");
^
<inline asm>:1:2: note: instantated into assembly here
barf
^
llvm-svn: 105978
immediate" operands. These functions have so far only been used for VMOV
but they also apply to other NEON instructions with modified immediate
operands. No functional changes.
llvm-svn: 105969
initializations into their own warning group, initializer-overrides,
which is part of -Wextra. Patch by william@25thandClement.com, fixes
PR6934!
llvm-svn: 105961
Daniel Dunbar