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[mips][microMIPS] Delay slot filler: Replace the microMIPS JR with the JRC

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This patch adds functionality in MIPS delay slot filler such as if delay slot
filler have to put NOP instruction into the delay slot of microMIPS JR
instruction, then instead of emitting NOP this instruction is replaced by
compact jump instruction JRC.

Differential Revision: http://reviews.llvm.org/D7522


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229128 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jozef Kolek
2015-02-13 17:51:27 +00:00
parent d25126faae
commit 85e08ed8a4
4 changed files with 57 additions and 16 deletions
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3
test/CodeGen/Mips/longbranch.ll
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@@ -126,8 +126,7 @@ end:
; MICROMIPS: li16 $[[R2:[0-9]+]], 1
; MICROMIPS: sw16 $[[R2]], 0($[[R1]])
; MICROMIPS: $[[BB2]]:
; MICROMIPS: jr $ra
; MICROMIPS: nop
; MICROMIPS: jrc $ra
; Check the NaCl version. Check that sp change is not in the branch delay slot