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

43 lines
2.2 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
; RUN: opt < %s -passes=rewrite-statepoints-for-gc -S | FileCheck %s
declare i8 @callee(ptr, i8, float, ptr)
define i8 @test(ptr %arg) gc "statepoint-example" {
; CHECK-LABEL: define i8 @test(
; CHECK-SAME: ptr [[ARG:%.*]]) gc "statepoint-example" {
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(i8 (ptr, i8, float, ptr)) @callee, i32 4, i32 0, ptr sret({ i64, i64 }) align 8 captures(none) null, i8 signext 8, float inreg 1.000000e+00, ptr [[ARG]], i32 0, i32 0)
; CHECK-NEXT: [[R1:%.*]] = call zeroext i8 @llvm.experimental.gc.result.i8(token [[STATEPOINT_TOKEN]])
; CHECK-NEXT: ret i8 [[R1]]
;
%r = call zeroext i8 @callee(ptr sret({i64, i64}) noalias align 8 nocapture null, i8 signext 8, float inreg 1.0, ptr writeonly %arg)
ret i8 %r
}
declare i32 @personality_function()
define i8 @test_invoke(ptr %arg) gc "statepoint-example" personality ptr @personality_function {
; CHECK-LABEL: define i8 @test_invoke(
; CHECK-SAME: ptr [[ARG:%.*]]) gc "statepoint-example" personality ptr @personality_function {
; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = invoke token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(i8 (ptr, i8, float, ptr)) @callee, i32 4, i32 0, ptr sret({ i64, i64 }) align 8 captures(none) null, i8 signext 8, float inreg 1.000000e+00, ptr [[ARG]], i32 0, i32 0)
; CHECK-NEXT: to label [[NORMAL_RETURN:%.*]] unwind label [[EXCEPTIONAL_RETURN:%.*]]
; CHECK: normal_return:
; CHECK-NEXT: [[R1:%.*]] = call zeroext i8 @llvm.experimental.gc.result.i8(token [[STATEPOINT_TOKEN]])
; CHECK-NEXT: ret i8 [[R1]]
; CHECK: exceptional_return:
; CHECK-NEXT: [[LANDING_PAD4:%.*]] = landingpad token
; CHECK-NEXT: cleanup
; CHECK-NEXT: ret i8 0
;
%r = invoke zeroext i8 @callee(ptr sret({i64, i64}) noalias align 8 nocapture null, i8 signext 8, float inreg 1.0, ptr writeonly %arg)
to label %normal_return unwind label %exceptional_return
normal_return:
ret i8 %r
exceptional_return:
%landing_pad4 = landingpad token
cleanup
ret i8 0
}