1da9834557
SplitBlockPredecessors() can not split blocks that have such terminators, and in two other places we already ensure that we don't end up calling SplitBlockPredecessors() on such blocks. Do so in one more place. Fixes https://bugs.llvm.org/show_bug.cgi?id=46857
53 lines
1.3 KiB
LLVM
53 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -jump-threading -S | FileCheck %s
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; CHECK-ALL-LABEL: @func(
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define i1 @func(i1 %arg, i32 %arg1, i1 %arg2) {
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; CHECK-LABEL: @func(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: br i1 [[ARG:%.*]], label [[BB3:%.*]], label [[BB4:%.*]]
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; CHECK: bb3:
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; CHECK-NEXT: [[I:%.*]] = icmp eq i32 [[ARG1:%.*]], 0
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; CHECK-NEXT: br label [[BB7:%.*]]
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; CHECK: bb4:
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; CHECK-NEXT: callbr void asm sideeffect "", "X"(i8* blockaddress(@func, [[BB7]]))
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; CHECK-NEXT: to label [[BB5:%.*]] [label %bb7]
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; CHECK: bb5:
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; CHECK-NEXT: br label [[BB7]]
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; CHECK: bb7:
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; CHECK-NEXT: [[I8:%.*]] = phi i1 [ [[I]], [[BB3]] ], [ [[ARG2:%.*]], [[BB5]] ], [ [[ARG2]], [[BB4]] ]
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; CHECK-NEXT: [[I9:%.*]] = xor i1 [[I8]], [[ARG]]
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; CHECK-NEXT: br i1 [[I9]], label [[BB11:%.*]], label [[BB11]]
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; CHECK: bb11:
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; CHECK-NEXT: ret i1 [[I9]]
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;
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bb:
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br i1 %arg, label %bb3, label %bb4
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bb3:
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%i = icmp eq i32 %arg1, 0
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br label %bb7
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bb4:
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callbr void asm sideeffect "", "X"(i8* blockaddress(@func, %bb6))
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to label %bb5 [label %bb6]
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bb5:
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br label %bb6
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bb6:
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br label %bb7
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bb7:
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%i8 = phi i1 [ %i, %bb3 ], [ %arg2, %bb6 ]
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%i9 = xor i1 %i8, %arg
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br i1 %i9, label %bb11, label %bb10
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bb10:
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br label %bb11
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bb11:
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ret i1 %i9
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}
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