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Remove unnecessary register moves.

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Michael Munday 2017-01-18 16:18:56 -05:00
parent d475b5b93e
commit 5f72b2313d
1 changed files with 1 additions and 4 deletions
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5
src/vm_s390x.dasc
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@ -272,12 +272,9 @@
|.define PC_RD, -4(PC) |.define PC_RD, -4(PC)
| |
|.macro branchPC, reg |.macro branchPC, reg
| // TODO: optimize this, was just lea PC, [PC+reg*4-BCBIAS_J*4]. | // Must not clobber condition code.
| // Can't clobber TMPR1 or condition code.
| lgr TMPR0, TMPR1 // Workaround because TMPR0 == r0 and can't be used in lay.
| sllg TMPR1, reg, 2 | sllg TMPR1, reg, 2
| lay PC, (-BCBIAS_J*4)(TMPR1, PC) | lay PC, (-BCBIAS_J*4)(TMPR1, PC)
| lgr TMPR1, TMPR0
|.endmacro |.endmacro
| |
|// Set current VM state. |// Set current VM state.