https://bugs.llvm.org/show_bug.cgi?id=36559
Bug ID: 36559
Summary: Error in type legalising on v6m
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: ARM
Assignee: unassignedb...@nondot.org
Reporter: david.gr...@arm.com
CC: deadal...@gmail.com, llvm-bugs@lists.llvm.org
This code:
char a[] = {1, 1, 1};
char b = 1;
int c;
static int d;
e() {
char *f = &a[2];
char *g = &b;
char **h = c;
if (g != (*h = f))
d = 70;
}
i() { fn3(d); }
Compiled like this:
clang --target=arm-arm-none-eabi -mcpu=cortex-m0plus -c test.c -O3 -c
Gives me this:
Operand not processed?
t21: ch = br t23, BasicBlock:ch<if.then 0x82b168>
UNREACHABLE executed at ../lib/CodeGen/SelectionDAG/LegalizeTypes.cpp:476!
Bisecting led to this commit:
https://reviews.llvm.org/rL325892
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