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| author | Jack Carter <jcarter@mips.com> | 2012-10-09 23:29:45 +0000 |
|---|---|---|
| committer | Jack Carter <jcarter@mips.com> | 2012-10-09 23:29:45 +0000 |
| commit | 2f68b311a1b0efb3cafeca3780f5c3d09a762a50 (patch) | |
| tree | e958b809744e76a31019f512b3eca5f429c883da /test/MC/Mips | |
| parent | 8161d81239f1d125cb1aeaf0be6916c36d4cdf2f (diff) | |
| download | external_llvm-2f68b311a1b0efb3cafeca3780f5c3d09a762a50.zip external_llvm-2f68b311a1b0efb3cafeca3780f5c3d09a762a50.tar.gz external_llvm-2f68b311a1b0efb3cafeca3780f5c3d09a762a50.tar.bz2 | |
Initial assembler implementation of Mips load address macro
This patch provides initial implementation of load address
macro instruction for Mips. We have implemented two kinds
of expansions with their variations depending on the size
of immediate operand:
1) load address with immediate value directly:
* la d,j => addiu d,$zero,j (for -32768 <= j <= 65535)
* la d,j => lui d,hi16(j)
ori d,d,lo16(j) (for any other 32 bit value of j)
2) load load address with register offset value
* la d,j(s) => addiu d,s,j (for -32768 <= j <= 65535)
* la d,j(s) => lui d,hi16(j) (for any other 32 bit value of j)
ori d,d,lo16(j)
addu d,d,s
This patch does not cover the case when the address is loaded
from the value of the label or function.
Contributer: Vladimir Medic
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165561 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/MC/Mips')
| -rw-r--r-- | test/MC/Mips/mips-expansions.s | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/MC/Mips/mips-expansions.s b/test/MC/Mips/mips-expansions.s index b87bfbd..cfc15e8 100644 --- a/test/MC/Mips/mips-expansions.s +++ b/test/MC/Mips/mips-expansions.s @@ -9,6 +9,19 @@ # CHECK: addiu $6, $zero, -2345 # encoding: [0xd7,0xf6,0x06,0x24] # CHECK: lui $7, 1 # encoding: [0x01,0x00,0x07,0x3c] # CHECK: ori $7, $7, 2 # encoding: [0x02,0x00,0xe7,0x34] +# CHECK: addiu $4, $zero, 20 # encoding: [0x14,0x00,0x04,0x24] +# CHECK: lui $7, 1 # encoding: [0x01,0x00,0x07,0x3c] +# CHECK: ori $7, $7, 2 # encoding: [0x02,0x00,0xe7,0x34] +# CHECK: addiu $4, $5, 20 # encoding: [0x14,0x00,0xa4,0x24] +# CHECK: lui $7, 1 # encoding: [0x01,0x00,0x07,0x3c] +# CHECK: ori $7, $7, 2 # encoding: [0x02,0x00,0xe7,0x34] +# CHECK: addu $7, $7, $8 # encoding: [0x21,0x38,0xe8,0x00] + li $5,123 li $6,-2345 li $7,65538 + + la $a0, 20 + la $7,65538 + la $a0, 20($a1) + la $7,65538($8) |