d46d9689f7
SplitBlockAndInsertIfThen utility creates two new blocks, they're called ThenBlock and Tail (true and false destinations of a conditional branch correspondingly). The function has a bool parameter Unreachable, and if it's set, then ThenBlock is terminated with an unreachable. At the end of the function the new blocks are added to the loop of the split block. However, in case ThenBlock is terminated with an unreachable, it cannot belong to any loop. Differential Revision: https://reviews.llvm.org/D152434
67 lines
2.4 KiB
LLVM
67 lines
2.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes='loop(simple-loop-unswitch<nontrivial>),verify<loops>' -S < %s | FileCheck %s
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; RUN: opt -passes='loop-mssa(simple-loop-unswitch<nontrivial>),verify<loops>' -S < %s | FileCheck %s
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; RUN: opt -passes='simple-loop-unswitch<nontrivial>' -verify-memoryssa -verify-loop-info -S < %s | FileCheck %s
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declare ptr @pluto()
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declare void @llvm.experimental.guard(i1, ...)
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declare void @widget()
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define void @foo(ptr addrspace(1) %arg, i64 %arg1) personality ptr @pluto {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[TMP:%.*]] = icmp slt i32 poison, 570
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; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP]], i1 true, i1 false
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; CHECK-NEXT: br i1 [[TMP]], label [[BB_SPLIT_US:%.*]], label [[BB_SPLIT:%.*]]
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; CHECK: bb.split.us:
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; CHECK-NEXT: br label [[BB3_US:%.*]]
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; CHECK: bb3.us:
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; CHECK-NEXT: br label [[GUARDED_US:%.*]]
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; CHECK: bb4.us:
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; CHECK-NEXT: invoke void @widget()
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; CHECK-NEXT: to label [[BB6_US:%.*]] unwind label [[BB7_SPLIT_US:%.*]]
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; CHECK: bb6.us:
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; CHECK-NEXT: invoke void @widget()
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; CHECK-NEXT: to label [[BB3_US]] unwind label [[BB7_SPLIT_US]]
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; CHECK: guarded.us:
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; CHECK-NEXT: invoke void @widget()
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; CHECK-NEXT: to label [[BB4_US:%.*]] unwind label [[BB7_SPLIT_US]]
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; CHECK: bb7.split.us:
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; CHECK-NEXT: [[TMP8_US:%.*]] = landingpad { ptr, i32 }
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: br label [[BB7:%.*]]
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; CHECK: bb.split:
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; CHECK-NEXT: br label [[BB3:%.*]]
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; CHECK: bb3:
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; CHECK-NEXT: br label [[DEOPT:%.*]]
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; CHECK: deopt:
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 false, i32 7) [ "deopt"() ]
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; CHECK-NEXT: unreachable
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; CHECK: bb7:
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; CHECK-NEXT: ret void
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;
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bb:
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%tmp = icmp slt i32 poison, 570
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%tmp2 = select i1 %tmp, i1 true, i1 false
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br label %bb3
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bb3: ; preds = %bb6, %bb
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call void (i1, ...) @llvm.experimental.guard(i1 %tmp2, i32 7) [ "deopt"() ]
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invoke void @widget()
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to label %bb4 unwind label %bb7
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bb4: ; preds = %bb3
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invoke void @widget()
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to label %bb6 unwind label %bb7
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bb6: ; preds = %bb4
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invoke void @widget()
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to label %bb3 unwind label %bb7
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bb7: ; preds = %bb6, %bb4, %bb3
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%tmp8 = landingpad { ptr, i32 }
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cleanup
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ret void
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}
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