https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86887
Bug ID: 86887
Summary: [9 Regression] aarch64: adcs accepts only register
arguments
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: assemble-failure
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: aarch64-unknown-linux-gnu
Created attachment 44518
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44518&action=edit
reduced testcase
Compiler output:
$ aarch64-unknown-linux-gnu-gcc -O testcase.c
/tmp/cc93Bw20.s: Assembler messages:
/tmp/cc93Bw20.s:39: Error: operand 1 must be an integer register -- `adcs
[sp,104],x3,x0'
$ aarch64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-aarch64/bin/aarch64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-263387-checking-yes-rtl-df-extra-aarch64/bin/../libexec/gcc/aarch64-unknown-linux-gnu/9.0.0/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl
--with-sysroot=/usr/aarch64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=aarch64-unknown-linux-gnu
--with-ld=/usr/bin/aarch64-unknown-linux-gnu-ld
--with-as=/usr/bin/aarch64-unknown-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-263387-checking-yes-rtl-df-extra-aarch64
Thread model: posix
gcc version 9.0.0 20180808 (experimental) (GCC)
The assembler is right, adcs needs all 3 arguments to be regsiters:
https://static.docs.arm.com/ddi0487/ca/DDI0487C_a_armv8_arm.pdf
