| // Test the aggressive (-fstack-arrays) allocation-placement mode: all array |
| // temporaries are moved to the stack regardless of size, as long as the |
| // heap-to-stack conversion is provably safe. |
| |
| // RUN: fir-opt --allocation-placement="stack-arrays=true" %s | FileCheck %s |
| |
| module attributes {fir.defaultkind = "a1c4d8i4l4r4", fir.kindmap = "", llvm.data_layout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"} { |
| |
| // Big temporary heap allocation -> stack under -fstack-arrays. |
| // CHECK-LABEL: func.func @big_temp_to_stack |
| // CHECK: fir.alloca !fir.array<100xi32> |
| // CHECK-NOT: fir.allocmem |
| func.func @big_temp_to_stack() { |
| %0 = fir.allocmem !fir.array<100xi32> |
| %c0 = arith.constant 0 : index |
| %v = arith.constant 0 : i32 |
| %r = fir.convert %0 : (!fir.heap<!fir.array<100xi32>>) -> !fir.ref<!fir.array<100xi32>> |
| %e = fir.coordinate_of %r, %c0 : (!fir.ref<!fir.array<100xi32>>, index) -> !fir.ref<i32> |
| fir.store %v to %e : !fir.ref<i32> |
| fir.freemem %0 : !fir.heap<!fir.array<100xi32>> |
| return |
| } |
| |
| } |
