[GHC] #9430: implement more arithmetic operations natively in the LLVM backend
GHC
ghc-devs at haskell.org
Sat Jul 4 10:51:32 UTC 2015
#9430: implement more arithmetic operations natively in the LLVM backend
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Reporter: rwbarton | Owner: michalt
Type: feature request | Status: new
Priority: normal | Milestone:
Component: Compiler (LLVM) | Version: 7.9
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture:
Type of failure: Runtime | Unknown/Multiple
performance bug | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Revisions:
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Comment (by Ben Gamari <ben@…>):
In [changeset:"b1d1c652908ecd7bfcf13cf2e5dd06ac7926992c/ghc"]:
{{{
#!CommitTicketReference repository="ghc"
revision="b1d1c652908ecd7bfcf13cf2e5dd06ac7926992c"
Support MO_{Add,Sub}IntC and MO_Add2 in the LLVM backend
This includes:
- Adding new LlvmType called LMStructP that represents an unpacked
struct (this is necessary since LLVM's instructions the
llvm.sadd.with.overflow.* return an unpacked struct).
- Modifications to LlvmCodeGen.CodeGen to generate the LLVM
instructions for the primops.
- Modifications to StgCmmPrim to actually use those three instructions
if we use the LLVM backend (so far they were only used for NCG).
Test Plan: validate
Reviewers: austin, rwbarton, bgamari
Reviewed By: bgamari
Subscribers: thomie, bgamari
Differential Revision: https://phabricator.haskell.org/D991
GHC Trac Issues: #9430
}}}
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9430#comment:5>
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