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| author | Loria <Loria@phantasia.org> | 2016-02-01 14:32:25 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2016-02-01 14:32:25 +0000 |
| commit | 4f1d62057fa4894e504458027ac3228404144f7d (patch) | |
| tree | df32667e5e3c487bc696920ab9a4a182df7b8a1b /gas | |
| parent | 655ed9ea1703173cb796070ed9843ea90bb74e58 (diff) | |
| download | gdb-4f1d62057fa4894e504458027ac3228404144f7d.zip gdb-4f1d62057fa4894e504458027ac3228404144f7d.tar.gz gdb-4f1d62057fa4894e504458027ac3228404144f7d.tar.bz2 | |
Fix a problem building the ARM assembler using LLVM.
PR target/19311
* config/tc-arm.c (encode_arm_immediate): Recode to improve
efficiency and avoid an LLVM loop optimization bug.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 6 | ||||
| -rw-r--r-- | gas/config/tc-arm.c | 5 |
2 files changed, 10 insertions, 1 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 027b556..6e7319d 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,9 @@ +2016-02-01 Loria <Loria@phantasia.org> + + PR target/19311 + * config/tc-arm.c (encode_arm_immediate): Recode to improve + efficiency and avoid an LLVM loop optimization bug. + 2016-02-01 Nick Clifton <nickc@redhat.com> * config/tc-microblaze.c (parse_imm): Fix compile time warning diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index 4a16267..055e525 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -7268,7 +7268,10 @@ encode_arm_immediate (unsigned int val) { unsigned int a, i; - for (i = 0; i < 32; i += 2) + if (val <= 0xff) + return val; + + for (i = 2; i < 32; i += 2) if ((a = rotate_left (val, i)) <= 0xff) return a | (i << 7); /* 12-bit pack: [shift-cnt,const]. */ |