Craig Topper eca2f6ad30 [X86] Teach EmitTest to handle ISD::SSUBO/USUBO in order to use the Z flag from the subtract directly during isel. ...

This prevents isel from emitting a TEST instruction that
optimizeCompareInstr will need to remove later.

In some of the modified tests, the SUB gets duplicated due to
the flags being needed in two places and being clobbered in
between. optimizeCompareInstr was able to optimize away the TEST
that was using the result of one of them, but optimizeCompareInstr
doesn't know to turn SUB into CMP after removing the TEST. It
only knows how to turn SUB into CMP if the result was already
dead.

With this change the TEST never exists, so optimizeCompareInstr
doesn't have to remove it. Then it can just turn the SUB into
CMP immediately.

Fixes PR43649.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@374755 91177308-0d34-0410-b5e6-96231b3b80d8

2019-10-14 06:47:56 +00:00

..

Analysis

[CostModel][X86] Improve sum reduction costs.

2019-10-12 13:21:50 +00:00

Assembler

Print quoted backslashes in LLVM IR as \\ instead of \5C

2019-10-10 18:31:57 +00:00

Bindings

Revert "Fix OCaml/core.ml fneg check"

2019-10-10 14:16:58 +00:00

Bitcode

[FPEnv][NFC] Change test to conform to strictfp attribute rules.

2019-10-09 17:24:56 +00:00

BugPoint

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CodeGen

[X86] Teach EmitTest to handle ISD::SSUBO/USUBO in order to use the Z flag from the subtract directly during isel.

2019-10-14 06:47:56 +00:00

DebugInfo

DebugInfo: Use base address selection entries for debug_loc

2019-10-11 21:52:41 +00:00

Demangle

llvm-undname: Add support for demangling typeinfo names

2019-09-23 13:13:37 +00:00

Examples

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ExecutionEngine

[JITLink] Disable the MachO/AArch64 testcase while investigating bot failures.

2019-10-11 01:58:12 +00:00

Feature

[FPEnv] Add constrained intrinsics for lrint and lround

2019-10-07 13:20:00 +00:00

FileCheck

[FileCheck] Implement --ignore-case option.

2019-10-11 11:59:14 +00:00

Instrumentation

Insert module constructors in a module pass

2019-10-11 08:47:03 +00:00

Integer

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JitListener

[lit] Delete empty lines at the end of lit.local.cfg NFC

2019-06-17 09:51:07 +00:00

Linker

Remove some unnecessary REQUIRES: shell lines

2019-09-10 00:06:52 +00:00

LTO

Dead Virtual Function Elimination

2019-10-11 11:59:55 +00:00

MachineVerifier

Add an operand to memory intrinsics to denote the "tail" marker.

2019-09-28 05:33:21 +00:00

MC

Revert r374652: "[lit] Fix internal diff's --strip-trailing-cr and use it"

2019-10-12 18:51:51 +00:00

Object

[mips] Use llvm-readobj -A flag in test cases. NFC

2019-10-03 12:08:04 +00:00

ObjectYAML

[yaml2obj/ObjectYAML] - Cleanup the error reporting API, add custom errors handlers.

2019-09-13 16:00:16 +00:00

Other

Add a pass to lower is.constant and objectsize intrinsics

2019-10-13 23:00:15 +00:00

Reduce

[Testing] Python 3 requires print to use parens

2019-09-20 13:52:47 +00:00

SafepointIRVerifier

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Support

[llvm-dwarfdump] Remove unnecessary explicit -h behaviour

2019-06-21 11:22:20 +00:00

SymbolRewriter

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TableGen

[TableGen] Fix a bug that MCSchedClassDesc is interfered between different SchedModel

2019-10-11 08:36:54 +00:00

ThinLTO/X86

Dead Virtual Function Elimination

2019-10-11 11:59:55 +00:00

tools

Revert r374652: "[lit] Fix internal diff's --strip-trailing-cr and use it"

2019-10-12 18:51:51 +00:00

Transforms

Add a pass to lower is.constant and objectsize intrinsics

2019-10-13 23:00:15 +00:00

Unit

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Verifier

[FPEnv] Strict FP tests should use the requisite function attributes.

2019-10-04 17:03:46 +00:00

YAMLParser

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.clang-format

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CMakeLists.txt

[llvm-ifs][IFS] llvm Interface Stubs merging + object file generation tool.

2019-08-30 18:26:05 +00:00

lit.cfg.py

Reland "[utils] Implement the llvm-locstats tool"

2019-10-02 07:00:01 +00:00

lit.site.cfg.py.in

Follow-up to r372209: Use single quotes for host_ldflags in the lit config

2019-09-18 14:12:59 +00:00

TestRunner.sh

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