From: Matthew Fortune <matthew.fort...@imgtec.com>
gcc/
* config/mips/mips.cc (mips_output_move): Mark unaligned
load and store with a comment.
Cherry-picked 42be7aa50f3b04a88768e08c000cfe7923f22b0f
from https://github.com/MIPS/gcc
Signed-off-by: Matthew Fortune <matthew.fort...@imgtec.com>
Signed-off-by: Faraz Shahbazker <fshahbaz...@wavecomp.com>
Signed-off-by: Aleksandar Rakic <aleksandar.ra...@htecgroup.com>
---
gcc/config/mips/mips.cc | 36 +++++++++++++++++++++++++++---------
1 file changed, 27 insertions(+), 9 deletions(-)
diff --git a/gcc/config/mips/mips.cc b/gcc/config/mips/mips.cc
index a1208bcef69..dcb4b9f9f99 100644
--- a/gcc/config/mips/mips.cc
+++ b/gcc/config/mips/mips.cc
@@ -6255,9 +6255,15 @@ mips_output_move (rtx insn, rtx dest, rtx src)
switch (GET_MODE_SIZE (mode))
{
case 1: return "sb\t%z1,%0";
- case 2: return "sh\t%z1,%0";
- case 4: return "sw\t%z1,%0";
- case 8: return "sd\t%z1,%0";
+ case 2: return ((MEM_ALIGN (dest) >= BITS_PER_UNIT * 2)
+ ? "sh\t%z1,%0"
+ : "sh\t%z1,%0 # unaligned");
+ case 4: return ((MEM_ALIGN (dest) >= BITS_PER_UNIT * 4)
+ ? "sw\t%z1,%0"
+ : "sw\t%z1,%0 # unaligned");
+ case 8: return ((MEM_ALIGN (dest) >= BITS_PER_UNIT * 8)
+ ? "sd\t%z1,%0"
+ : "sd\t%z1,%0 # unaligned");
default: gcc_unreachable ();
}
}
@@ -6313,18 +6319,30 @@ mips_output_move (rtx insn, rtx dest, rtx src)
switch (GET_MODE_SIZE (mode))
{
case 1: return "lbu\t$0,%1";
- case 2: return "lhu\t$0,%1";
- case 4: return "lw\t$0,%1";
- case 8: return "ld\t$0,%1";
+ case 2: return ((MEM_ALIGN (src) >= BITS_PER_UNIT * 2)
+ ? "lhu\t$0,%1"
+ : "lhu\t$0,%1 # unaligned");
+ case 4: return ((MEM_ALIGN (src) >= BITS_PER_UNIT * 4)
+ ? "lw\t$0,%1"
+ : "lw\t$0,%1 # unaligned");
+ case 8: return ((MEM_ALIGN (src) >= BITS_PER_UNIT * 8)
+ ? "ld\t$0,%1"
+ : "ld\t$0,%1 # unaligned");
default: gcc_unreachable ();
}
else
switch (GET_MODE_SIZE (mode))
{
case 1: return "lbu\t%0,%1";
- case 2: return "lhu\t%0,%1";
- case 4: return "lw\t%0,%1";
- case 8: return "ld\t%0,%1";
+ case 2: return ((MEM_ALIGN (src) >= BITS_PER_UNIT * 2)
+ ? "lhu\t%0,%1"
+ : "lhu\t%0,%1 # unaligned");
+ case 4: return ((MEM_ALIGN (src) >= BITS_PER_UNIT * 4)
+ ? "lw\t%0,%1"
+ : "lw\t%0,%1 # unaligned");
+ case 8: return ((MEM_ALIGN (src) >= BITS_PER_UNIT * 8)
+ ? "ld\t%0,%1"
+ : "ld\t%0,%1 # unaligned");
default: gcc_unreachable ();
}
}
--
2.34.1
