http://llvm.org/bugs/show_bug.cgi?id=17720
Bug ID: 17720
Summary: ARM assembler rejects LDRT/LDRHT/LDRBT with "error:
instruction requires: thumb2"
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
The integrated ARM assembler in Clang rejects LDRT/LDRHT/LDRBT with "error:
instruction requires: thumb2" when assembling for ARMv7-A.
Steps to reproduce for LDRT:
$ cat > test.s <<END
.syntax unified
.text
.arm
LDRT r0, [r1]
END
$ /opt/llvm/bin/clang -target armv7a-none-eabi -integrated-as test.s
Actual results:
'+soft-float-abi' is not a recognized feature for this target (ignoring
feature)
test.s:4:1: error: instruction requires: thumb2
LDRT r0, [r1]
^
Expected results: assemble LDRT instruction without error, since it has been a
valid ARM instruction since ARMv4, long before Thumb2 first appeared.
Version and platform:
$ /opt/llvm/bin/clang --version
clang version 3.4 (trunk 193589)
Target: x86_64-unknown-linux-gnu
Thread model: posix
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