llvm-project/flang/test/Fir/commute.fir
Nikita Popov 29441e4f5f
[IR] Convert from nocapture to captures(none) (#123181)
This PR removes the old `nocapture` attribute, replacing it with the new
`captures` attribute introduced in #116990. This change is
intended to be essentially NFC, replacing existing uses of `nocapture`
with `captures(none)` without adding any new analysis capabilities.
Making use of non-`none` values is left for a followup.

Some notes:
* `nocapture` will be upgraded to `captures(none)` by the bitcode
   reader.
* `nocapture` will also be upgraded by the textual IR reader. This is to
   make it easier to use old IR files and somewhat reduce the test churn in
   this PR.
* Helper APIs like `doesNotCapture()` will check for `captures(none)`.
* MLIR import will convert `captures(none)` into an `llvm.nocapture`
   attribute. The representation in the LLVM IR dialect should be updated
   separately.
2025-01-29 16:56:47 +01:00

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// RUN: fir-opt %s | tco | FileCheck %s
// CHECK-LABEL: define i32 @f1(i32 %0, i32 %1)
func.func @f1(%a : i32, %b : i32) -> i32 {
// CHECK: %[[reg3:.*]] = add i32 %0, %1
%1 = arith.addi %a, %b : i32
%2 = arith.addi %b, %a : i32
// CHECK: mul i32 %[[reg3]], %[[reg3]]
%3 = arith.muli %1, %2 : i32
return %3 : i32
}
// CHECK-LABEL: define i32 @f2(ptr captures(none) %0)
func.func @f2(%a : !fir.ref<i32>) -> i32 {
%1 = fir.load %a : !fir.ref<i32>
// CHECK: %[[r2:.*]] = load
%2 = fir.load %a : !fir.ref<i32>
// CHECK: %[[r3:.*]] = add i32 %[[r2]], %[[r2]]
%3 = arith.addi %1, %2 : i32
%4 = fir.load %a : !fir.ref<i32>
// CHECK: %[[r4:.*]] = add i32 %[[r3]], %[[r2]]
%5 = arith.addi %3, %4 : i32
%6 = fir.load %a : !fir.ref<i32>
// CHECK: %[[r5:.*]] = add i32 %[[r4]], %[[r2]]
%7 = arith.addi %5, %6 : i32
%8 = fir.load %a : !fir.ref<i32>
// CHECK: %[[r6:.*]] = add i32 %[[r5]], %[[r2]]
%9 = arith.addi %7, %8 : i32
%10 = fir.load %a : !fir.ref<i32>
// CHECK: %[[r7:.*]] = add i32 %[[r2]], %[[r6]]
%11 = arith.addi %10, %9 : i32
return %11 : i32
}