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| author | Richard Osborne <richard@xmos.com> | 2014-02-27 14:00:40 +0000 |
|---|---|---|
| committer | Richard Osborne <richard@xmos.com> | 2014-02-27 14:00:40 +0000 |
| commit | ad4ffce35ffe77b25f4a670823225a9151725630 (patch) | |
| tree | acb7e0d50d078b14eec5a10372aa88e50da337aa /lib/Target/XCore/XCoreInstrInfo.td | |
| parent | 6257ef873272c6a09638a80872dfce65a7946fb6 (diff) | |
| download | llvm-ad4ffce35ffe77b25f4a670823225a9151725630.tar.gz llvm-ad4ffce35ffe77b25f4a670823225a9151725630.tar.bz2 llvm-ad4ffce35ffe77b25f4a670823225a9151725630.tar.xz | |
[XCore] Support functions returning more than 4 words.
Summary:
If a function returns a large struct by value return the first 4 words
in registers and the rest on the stack in a location reserved by the
caller. This is needed to support the xC language which supports
functions returning an arbitrary number of return values.
Reviewers: robertlytton
Reviewed By: robertlytton
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D2889
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202397 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/XCore/XCoreInstrInfo.td')
| -rw-r--r-- | lib/Target/XCore/XCoreInstrInfo.td | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/Target/XCore/XCoreInstrInfo.td b/lib/Target/XCore/XCoreInstrInfo.td index b243ee3510..b6906569aa 100644 --- a/lib/Target/XCore/XCoreInstrInfo.td +++ b/lib/Target/XCore/XCoreInstrInfo.td @@ -68,6 +68,10 @@ def SDT_XCoreStwsp : SDTypeProfile<0, 2, [SDTCisInt<1>]>; def XCoreStwsp : SDNode<"XCoreISD::STWSP", SDT_XCoreStwsp, [SDNPHasChain, SDNPMayStore]>; +def SDT_XCoreLdwsp : SDTypeProfile<1, 1, [SDTCisInt<1>]>; +def XCoreLdwsp : SDNode<"XCoreISD::LDWSP", SDT_XCoreLdwsp, + [SDNPHasChain, SDNPMayLoad]>; + // These are target-independent nodes, but have target-specific formats. def SDT_XCoreCallSeqStart : SDCallSeqStart<[ SDTCisVT<0, i32> ]>; def SDT_XCoreCallSeqEnd : SDCallSeqEnd<[ SDTCisVT<0, i32>, @@ -581,10 +585,12 @@ def STWSP_lru6 : _FLRU6<0b010101, (outs), (ins RRegs:$a, i32imm:$b), let mayLoad=1 in { def LDWSP_ru6 : _FRU6<0b010111, (outs RRegs:$a), (ins i32imm:$b), - "ldw $a, sp[$b]", []>; + "ldw $a, sp[$b]", + [(set RRegs:$a, (XCoreLdwsp immU6:$b))]>; def LDWSP_lru6 : _FLRU6<0b010111, (outs RRegs:$a), (ins i32imm:$b), - "ldw $a, sp[$b]", []>; + "ldw $a, sp[$b]", + [(set RRegs:$a, (XCoreLdwsp immU16:$b))]>; } let neverHasSideEffects = 1 in { |