llvm-6502/test/CodeGen/PowerPC
Adrian Prantl 02474a32eb Move the complex address expression out of DIVariable and into an extra
argument of the llvm.dbg.declare/llvm.dbg.value intrinsics.

Previously, DIVariable was a variable-length field that has an optional
reference to a Metadata array consisting of a variable number of
complex address expressions. In the case of OpPiece expressions this is
wasting a lot of storage in IR, because when an aggregate type is, e.g.,
SROA'd into all of its n individual members, the IR will contain n copies
of the DIVariable, all alike, only differing in the complex address
reference at the end.

By making the complex address into an extra argument of the
dbg.value/dbg.declare intrinsics, all of the pieces can reference the
same variable and the complex address expressions can be uniqued across
the CU, too.
Down the road, this will allow us to move other flags, such as
"indirection" out of the DIVariable, too.

The new intrinsics look like this:
declare void @llvm.dbg.declare(metadata %storage, metadata %var, metadata %expr)
declare void @llvm.dbg.value(metadata %storage, i64 %offset, metadata %var, metadata %expr)

This patch adds a new LLVM-local tag to DIExpressions, so we can detect
and pretty-print DIExpression metadata nodes.

What this patch doesn't do:

This patch does not touch the "Indirect" field in DIVariable; but moving
that into the expression would be a natural next step.

http://reviews.llvm.org/D4919
rdar://problem/17994491

Thanks to dblaikie and dexonsmith for reviewing this patch!

Note: I accidentally committed a bogus older version of this patch previously.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218787 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-01 18:55:02 +00:00
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2004-11-29-ShrCrash.ll
2004-11-30-shift-crash.ll
2004-11-30-shr-var-crash.ll
2004-12-12-ZeroSizeCommon.ll
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2005-01-14-UndefLong.ll
2005-08-12-rlwimi-crash.ll
2005-09-02-LegalizeDuplicatesCalls.ll
2005-10-08-ArithmeticRotate.ll
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dbg.ll Move the complex address expression out of DIVariable and into an extra 2014-10-01 18:55:02 +00:00
DbgValueOtherTargets.test
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empty-functions.ll Add back tests for empty function in SPARC and PowerPC. 2014-09-15 22:11:07 +00:00
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fast-isel-call.ll Reapply [FastISel] Let the target decide first if it wants to materialize a constant (215588). 2014-08-19 19:05:24 +00:00
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fast-isel-ret.ll Fix FastISel bug in boolean returns for PowerPC. 2014-09-17 23:25:06 +00:00
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fma.ll Optionally enable more-aggressive FMA formation in DAGCombine 2014-09-19 11:42:56 +00:00
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ppc64-elf-abi.ll [PowerPC] Fix ppc64-elf-abi.ll test case on Darwin 2014-07-29 12:48:14 +00:00
ppc64-linux-func-size.ll
ppc64-prefetch.ll [PowerPC] Add support for dcbtst and icbt (prefetch) 2014-08-23 23:21:04 +00:00
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ppc64le-aggregates.ll [PowerPC] ELFv2 aggregate passing support 2014-07-21 00:13:26 +00:00
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ppc64le-crsave.ll [PowerPC] ELFv2 explicit CFI for CR fields 2014-07-21 00:03:18 +00:00
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pr17168.ll Move the complex address expression out of DIVariable and into an extra 2014-10-01 18:55:02 +00:00
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pr18663-2.ll Disable IsSub subregister assert. pr18663. 2014-07-31 19:50:53 +00:00
pr18663.ll Disable IsSub subregister assert. pr18663. 2014-07-31 19:50:53 +00:00
pr20442.ll Fix ScalarEvolutionExpander when creating a PHI in a block with duplicate predecessors 2014-07-31 19:13:38 +00:00
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recipest.ll Refactor reciprocal and reciprocal square root estimate into target-independent functions (part 2). 2014-09-26 23:01:47 +00:00
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tls-pic.ll [PowerPC] Support TLS on PPC32/ELF 2014-07-25 17:47:22 +00:00
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toc-load-sched-bug.ll [PPC64] Add test case for r215685. 2014-08-15 13:51:57 +00:00
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unal-altivec-wint.ll [PowerPC] Implement PPCTargetLowering::getTgtMemIntrinsic 2014-08-13 01:15:40 +00:00
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varargs-struct-float.ll [PowerPC] ELFv2 aggregate passing support 2014-07-21 00:13:26 +00:00
varargs.ll
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vec_cmp.ll [PowerPC] Fix and improve vector comparisons 2014-08-04 13:13:57 +00:00
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vec_shuffle_le.ll [PowerPC] Swap arguments and adjust shift count for vsldoi on little endian 2014-08-05 20:47:25 +00:00
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