https://bugs.llvm.org/show_bug.cgi?id=51103
Bug ID: 51103
Summary: Not able to vectorize struct members
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Loop Optimizer
Assignee: unassignedb...@nondot.org
Reporter: llvm-...@redking.me.uk
CC: a.bat...@hotmail.com, florian_h...@apple.com,
llvm-bugs@lists.llvm.org
Reported here: https://lists.llvm.org/pipermail/llvm-dev/2021-July/151796.html
#define N 10
struct foo {
float a[N][N];
float b[N];
};
void compute(struct foo *p)
{
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) {
p->a[i][j] += 0.1f * p->b[i];
}
}
}
LLVM isn't able to vectorize this code. I'm not sure what the issue is here
as it seems to vectorize this code:
#define N 10
struct foo {
float a[N];
float b[N];
};
void compute(struct foo *p)
{
for (int i = 0; i < N; i++) {
p->a[i] += 0.1f * p->b[i];
}
}
Current Codegen: https://llvm.godbolt.org/z/nah3ov9fT
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