https://llvm.org/bugs/show_bug.cgi?id=23684
Bug ID: 23684
Summary: optnone causes CodeGen crash on ARM
Product: tools
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: llc
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 14399
--> https://llvm.org/bugs/attachment.cgi?id=14399&action=edit
crash log
On LLVM r238172 and Clang r238166, following code causes clang crash:
$ clang -fPIC -target arm-linux-gnueabi -O1 -x c -o /dev/null - 2>>
crash-log.txt <<EOF
int i = 0;
void g(int* x) {
*x = 0;
}
__attribute__((optnone))
void f() {
g(&i);
}
EOF
And in IR, this also causes crash:
$ clang -fPIC -target arm-linux-gnueabi -O1 -x ir -o /dev/null - 2>>
crash-log.txt <<EOF
target triple = "armv4t--linux-gnueabi"
@i = global i32 0, align 4
define void @g(i32* %x) {
store i32 0, i32* %x, align 4
ret void
}
define void @f() noinline optnone {
call void @g(i32* @i)
ret void
}
EOF
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