https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100181
Bug ID: 100181
Summary: hot-cold partitioned code doesn't assemble
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
I see lots of libgomp fails with offloading for amdgcn like
./pr93515.xamdgcn-amdhsa.mkoffload.2.s:634:2: error: undefined label '.L33'
s_branch .L33
^
mkoffload: fatal error: /usr/bin//x86_64-suse-linux-accel-amdgcn-amdhsa-gcc-11
returned 1 exit status
which is because we compile to
s_branch .L33
.section .text.unlikely
.type main._omp_fn.4.cold, @function
main._omp_fn.4.cold:
.L33:
s_getpc_b64 s[2:3]
s_add_u32 s2, s2, abort@rel32@lo+4
s_addc_u32 s3, s3, abort@rel32@hi+4
s_swappc_b64 s[18:19], s[2:3]
.text
and thus have a section crossing jump using a local label. The amdgcn
assembler
I'm using doesn't like this, it is
> amdgcn-amdhsa-as --version
LLVM (http://llvm.org/):
LLVM version 11.0.1
Optimized build.
Default target: x86_64-unknown-linux-gnu
Host CPU: znver2
