maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/Transforms/LoopDeletion/two-predecessors.ll

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

33 lines
1.2 KiB
LLVM
Raw Normal View History

[LoopDeletion] Require loop to have a predecessor when executing 1st iteration symbolically Two predecessors break the further logic, and the loop may come to the opt in non-canonicalized state.
2021-06-22 13:10:58 +08:00
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -loop-deletion -S | FileCheck %s
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-linux-gnu"
define dso_local i32 @hoge() local_unnamed_addr #0 {
; CHECK-LABEL: @hoge(
; CHECK-NEXT: bb:
[llvm][test] rewrite callbr to use i rather than X constraint NFC In D115311, we're looking to modify clang to emit i constraints rather than X constraints for callbr's indirect destinations. Prior to doing so, update all of the existing tests in llvm/ to match. Reviewed By: void, jyknight Differential Revision: https://reviews.llvm.org/D115410
2022-01-12 03:08:48 +08:00
; CHECK-NEXT: callbr void asm sideeffect "", "i"(i8* blockaddress(@hoge, [[BB2:%.*]]))
[LoopDeletion] Require loop to have a predecessor when executing 1st iteration symbolically Two predecessors break the further logic, and the loop may come to the opt in non-canonicalized state.
2021-06-22 13:10:58 +08:00
; CHECK-NEXT: to label [[BB1:%.*]] [label %bb2]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB2]]
; CHECK: bb2:
; CHECK-NEXT: [[TMP:%.*]] = phi i32 [ undef, [[BB1]] ], [ [[TMP3:%.*]], [[BB2]] ], [ undef, [[BB:%.*]] ]
; CHECK-NEXT: [[TMP3]] = tail call i32 bitcast (i32 (...)* @widget to i32 (i32)*)(i32 [[TMP]])
; CHECK-NEXT: br label [[BB2]]
;
bb:
[llvm][test] rewrite callbr to use i rather than X constraint NFC In D115311, we're looking to modify clang to emit i constraints rather than X constraints for callbr's indirect destinations. Prior to doing so, update all of the existing tests in llvm/ to match. Reviewed By: void, jyknight Differential Revision: https://reviews.llvm.org/D115410
2022-01-12 03:08:48 +08:00
callbr void asm sideeffect "", "i"(i8* blockaddress(@hoge, %bb2)) #1
[LoopDeletion] Require loop to have a predecessor when executing 1st iteration symbolically Two predecessors break the further logic, and the loop may come to the opt in non-canonicalized state.
2021-06-22 13:10:58 +08:00
to label %bb1 [label %bb2]
bb1: ; preds = %bb
br label %bb2
bb2: ; preds = %bb2, %bb1, %bb
%tmp = phi i32 [ undef, %bb1 ], [ %tmp3, %bb2 ], [ undef, %bb ]
%tmp3 = tail call i32 bitcast (i32 (...)* @widget to i32 (i32)*)(i32 %tmp) #1
br label %bb2
}
declare dso_local i32 @widget(...) local_unnamed_addr #0