Files
clang-p2996/llvm/test/Transforms/LoopVectorize/SystemZ/zero_unroll.ll
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

36 lines
1.3 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -S -passes=loop-vectorize -mtriple=s390x-linux-gnu -vectorizer-min-trip-count=8 < %s | FileCheck %s
define i32 @main(i32 %arg, ptr nocapture readnone %arg1) #0 {
; CHECK-LABEL: define i32 @main(
; CHECK-SAME: i32 [[ARG:%.*]], ptr readnone captures(none) [[ARG1:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: [[TMP0:%.*]] = alloca i8, align 1
; CHECK-NEXT: br label %[[LOOP:.*]]
; CHECK: [[LOOP]]:
; CHECK-NEXT: [[STOREMERGE_I_I:%.*]] = phi i8 [ 0, %[[ENTRY]] ], [ [[TMP12_I_I:%.*]], %[[LOOP]] ]
; CHECK-NEXT: store i8 [[STOREMERGE_I_I]], ptr [[TMP0]], align 2
; CHECK-NEXT: [[TMP8_I_I:%.*]] = icmp ult i8 [[STOREMERGE_I_I]], 8
; CHECK-NEXT: [[TMP12_I_I]] = add nuw nsw i8 [[STOREMERGE_I_I]], 1
; CHECK-NEXT: br i1 [[TMP8_I_I]], label %[[LOOP]], label %[[RET:.*]]
; CHECK: [[RET]]:
; CHECK-NEXT: ret i32 0
;
entry:
%0 = alloca i8, align 1
br label %loop
loop:
%storemerge.i.i = phi i8 [ 0, %entry ], [ %tmp12.i.i, %loop ]
store i8 %storemerge.i.i, ptr %0, align 2
%tmp8.i.i = icmp ult i8 %storemerge.i.i, 8
%tmp12.i.i = add nuw nsw i8 %storemerge.i.i, 1
br i1 %tmp8.i.i, label %loop, label %ret
ret:
ret i32 0
}
attributes #0 = { "target-cpu"="z13" }