http://llvm.org/bugs/show_bug.cgi?id=14293
Bug #: 14293
Summary: register pinned variables are not pinned to the
register
Product: libraries
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: PowerPC
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
[rdivacky@anacreon ~]$ cat rtld.c
void *foo() {
register void *tp __asm__("r2");
return tp;
}
[rdivacky@anacreon ~]$ ./llvm/Release+Asserts/bin/clang -O2 -S -o - rtld.c
.file "rtld.c"
.text
.globl foo
.align 2
.type foo,@function
.section .opd,"aw",@progbits
foo:
.align 3
.quad .L.foo
.quad .TOC.@tocbase
.quad 0
.text
.L.foo:
blr
.long 0
.quad 0
.Ltmp0:
.size foo, .Ltmp0-.L.foo
No mention of "r2" in foo at all. The code at O0 is
ld 3, -8(1)
blr
whicih seems wrong to me as well.
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