https://bugs.llvm.org/show_bug.cgi?id=40968
Bug ID: 40968
Summary: AArch64 fails to select the correct addp
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: AArch64
Assignee: unassignedb...@nondot.org
Reporter: david.gr...@arm.com
CC: arnaud.degrandmai...@arm.com, jpaque...@apple.com,
llvm-bugs@lists.llvm.org, peter.sm...@linaro.org,
t.p.northo...@gmail.com, ties.st...@arm.com
This code:
typedef __attribute__((neon_vector_type(2))) float float32x2_t;
int printf(const char *, ...);
static __inline__ __attribute__((__always_inline__, __nodebug__)) float32x2_t
vcreate_f32(unsigned long __p0) {
float32x2_t __ret;
__ret = (float32x2_t)(__p0);
return __ret;
}
int main() {
float32x2_t c;
float32x2_t d;
float32x2_t e;
c = vcreate_f32(0x3f69925b3e663ec8UL);
d = vcreate_f32(0x3f4375073f409923UL);
e = __builtin_neon_vpadd_v(d, c, 9);
float f = __builtin_neon_vget_lane_f32(e, 0);
printf("%g\n", f);
}
Should print ~1.51584. It seems to currently print "8.77658e+37".
This started to fail at -O0 (with global isel) after rL355344, but I think
that's just because it no longer falls back to isel. It appears to be selecting
ADDP (i32x2), not FADDP (f32x2).
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
