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| author | Hal Finkel <hfinkel@anl.gov> | 2013-03-31 10:12:51 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2013-03-31 10:12:51 +0000 |
| commit | 8049ab15e4b638a07d6f230329945c2310eca27b (patch) | |
| tree | 89ddcf3d670a9c7f4fafe2db694222cabdd48485 /lib/Target/PowerPC/PPCInstrInfo.td | |
| parent | 9ad0f4907b3ba0916a8b6cdb95d298d2ddb7d405 (diff) | |
| download | llvm-8049ab15e4b638a07d6f230329945c2310eca27b.tar.gz llvm-8049ab15e4b638a07d6f230329945c2310eca27b.tar.bz2 llvm-8049ab15e4b638a07d6f230329945c2310eca27b.tar.xz | |
Add the PPC lfiwax instruction
This instruction is available on modern PPC64 CPUs, and is now used
to improve the SINT_TO_FP lowering (by eliminating the need for the
separate sign extension instruction and decreasing the amount of
needed stack space).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178446 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/PPCInstrInfo.td')
| -rw-r--r-- | lib/Target/PowerPC/PPCInstrInfo.td | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCInstrInfo.td b/lib/Target/PowerPC/PPCInstrInfo.td index d3d7dc66c9..478e6127ab 100644 --- a/lib/Target/PowerPC/PPCInstrInfo.td +++ b/lib/Target/PowerPC/PPCInstrInfo.td @@ -20,6 +20,10 @@ include "PPCInstrFormats.td" def SDT_PPCstfiwx : SDTypeProfile<0, 2, [ // stfiwx SDTCisVT<0, f64>, SDTCisPtrTy<1> ]>; +def SDT_PPClfiwax : SDTypeProfile<1, 1, [ // lfiwax + SDTCisVT<0, f64>, SDTCisPtrTy<1> +]>; + def SDT_PPCCallSeqStart : SDCallSeqStart<[ SDTCisVT<0, i32> ]>; def SDT_PPCCallSeqEnd : SDCallSeqEnd<[ SDTCisVT<0, i32>, SDTCisVT<1, i32> ]>; @@ -63,6 +67,8 @@ def PPCfctidz : SDNode<"PPCISD::FCTIDZ", SDTFPUnaryOp, []>; def PPCfctiwz : SDNode<"PPCISD::FCTIWZ", SDTFPUnaryOp, []>; def PPCstfiwx : SDNode<"PPCISD::STFIWX", SDT_PPCstfiwx, [SDNPHasChain, SDNPMayStore]>; +def PPClfiwax : SDNode<"PPCISD::LFIWAX", SDT_PPClfiwax, + [SDNPHasChain, SDNPMayLoad]>; // Extract FPSCR (not modeled at the DAG level). def PPCmffs : SDNode<"PPCISD::MFFS", @@ -843,6 +849,10 @@ def LFSX : XForm_25<31, 535, (outs F4RC:$frD), (ins memrr:$src), def LFDX : XForm_25<31, 599, (outs F8RC:$frD), (ins memrr:$src), "lfdx $frD, $src", LdStLFD, [(set f64:$frD, (load xaddr:$src))]>; + +def LFIWAX : XForm_25<31, 855, (outs F8RC:$frD), (ins memrr:$src), + "lfiwax $frD, $src", LdStLFD, + [(set f64:$frD, (PPClfiwax xoaddr:$src))]>; } //===----------------------------------------------------------------------===// |