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| author | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-10-01 12:11:47 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-10-01 12:11:47 +0000 |
| commit | ced450f0e6266eb8c2624fc1895cbc2749d715c3 (patch) | |
| tree | 1f12f564ed9f888409bda19564d7cf132a894f9c /lib/Target/SystemZ/SystemZInstrInfo.td | |
| parent | 55d7d83b6c9e55fa73d667660c8e90f92999385b (diff) | |
| download | external_llvm-ced450f0e6266eb8c2624fc1895cbc2749d715c3.zip external_llvm-ced450f0e6266eb8c2624fc1895cbc2749d715c3.tar.gz external_llvm-ced450f0e6266eb8c2624fc1895cbc2749d715c3.tar.bz2 | |
[SystemZ] Add sign-extending high-word loads (LBH and LHH)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191740 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/SystemZ/SystemZInstrInfo.td')
| -rw-r--r-- | lib/Target/SystemZ/SystemZInstrInfo.td | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/lib/Target/SystemZ/SystemZInstrInfo.td b/lib/Target/SystemZ/SystemZInstrInfo.td index 241cd33..6eeb91b 100644 --- a/lib/Target/SystemZ/SystemZInstrInfo.td +++ b/lib/Target/SystemZ/SystemZInstrInfo.td @@ -408,9 +408,21 @@ let Defs = [CC], CCValues = 0xE, CompareZeroCCMask = 0xE in def : Pat<(sext_inreg GR64:$src, i32), (LGFR (EXTRACT_SUBREG GR64:$src, subreg_l32))>; -// 32-bit extensions from memory. -def LB : UnaryRXY<"lb", 0xE376, asextloadi8, GR32, 1>; +// 32-bit extensions from 8-bit memory. LBMux expands to LB or LBH, +// depending on the choice of register. +def LBMux : UnaryRXYPseudo<"lb", asextloadi8, GRX32, 1>, + Requires<[FeatureHighWord]>; +def LB : UnaryRXY<"lb", 0xE376, asextloadi8, GR32, 1>; +def LBH : UnaryRXY<"lbh", 0xE3C0, asextloadi8, GRH32, 1>, + Requires<[FeatureHighWord]>; + +// 32-bit extensions from 16-bit memory. LHMux expands to LH or LHH, +// depending on the choice of register. +def LHMux : UnaryRXYPseudo<"lh", asextloadi16, GRX32, 2>, + Requires<[FeatureHighWord]>; defm LH : UnaryRXPair<"lh", 0x48, 0xE378, asextloadi16, GR32, 2>; +def LHH : UnaryRXY<"lhh", 0xE3C4, asextloadi16, GRH32, 2>, + Requires<[FeatureHighWord]>; def LHRL : UnaryRILPC<"lhrl", 0xC45, aligned_asextloadi16, GR32>; // 64-bit extensions from memory. |