394e321a2e
This patch reverts https://github.com/llvm/llvm-project/pull/81585 as https://github.com/llvm/llvm-project/pull/78582 has been landed. Now clang works well with reproducer https://github.com/llvm/llvm-project/pull/79993#issuecomment-1936822679.
302 lines
9.1 KiB
LLVM
302 lines
9.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt < %s -passes=correlated-propagation -S | FileCheck %s
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define i32 @test_unreachable_default(i32 noundef %num) {
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; CHECK-LABEL: define i32 @test_unreachable_default(
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; CHECK-SAME: i32 noundef [[NUM:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[SUB:%.*]] = add i32 [[NUM]], -120
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[SUB]], 3
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; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[SUB]], i32 2
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; CHECK-NEXT: switch i32 [[COND]], label [[DEFAULT_UNREACHABLE:%.*]] [
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; CHECK-NEXT: i32 0, label [[SW_BB:%.*]]
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; CHECK-NEXT: i32 1, label [[SW_BB2:%.*]]
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; CHECK-NEXT: i32 2, label [[SW_BB4:%.*]]
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; CHECK-NEXT: ]
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; CHECK: sw.bb:
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; CHECK-NEXT: [[CALL:%.*]] = call i32 @call0()
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; CHECK-NEXT: br label [[CLEANUP:%.*]]
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; CHECK: sw.bb2:
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; CHECK-NEXT: [[CALL3:%.*]] = call i32 @call1()
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: sw.bb4:
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; CHECK-NEXT: [[CALL5:%.*]] = call i32 @call2()
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: default.unreachable:
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; CHECK-NEXT: unreachable
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; CHECK: sw.default:
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; CHECK-NEXT: [[CALL6:%.*]] = call i32 @call3()
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: cleanup:
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; CHECK-NEXT: [[RETVAL_0:%.*]] = phi i32 [ [[CALL6]], [[SW_DEFAULT:%.*]] ], [ [[CALL5]], [[SW_BB4]] ], [ [[CALL3]], [[SW_BB2]] ], [ [[CALL]], [[SW_BB]] ]
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; CHECK-NEXT: ret i32 [[RETVAL_0]]
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;
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entry:
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%sub = add i32 %num, -120
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%cmp = icmp ult i32 %sub, 3
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%cond = select i1 %cmp, i32 %sub, i32 2
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switch i32 %cond, label %sw.default [
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i32 0, label %sw.bb
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i32 1, label %sw.bb2
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i32 2, label %sw.bb4
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]
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sw.bb:
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%call = call i32 @call0()
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br label %cleanup
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sw.bb2:
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%call3 = call i32 @call1()
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br label %cleanup
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sw.bb4:
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%call5 = call i32 @call2()
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br label %cleanup
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sw.default:
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%call6 = call i32 @call3()
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br label %cleanup
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cleanup:
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%retval.0 = phi i32 [ %call6, %sw.default ], [ %call5, %sw.bb4 ], [ %call3, %sw.bb2 ], [ %call, %sw.bb ]
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ret i32 %retval.0
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}
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define i32 @test_unreachable_default_shared_edge(i32 noundef %num) {
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; CHECK-LABEL: define i32 @test_unreachable_default_shared_edge(
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; CHECK-SAME: i32 noundef [[NUM:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[SUB:%.*]] = add i32 [[NUM]], -120
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[SUB]], 3
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; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[SUB]], i32 2
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; CHECK-NEXT: switch i32 [[COND]], label [[DEFAULT_UNREACHABLE:%.*]] [
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; CHECK-NEXT: i32 0, label [[SW_BB:%.*]]
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; CHECK-NEXT: i32 1, label [[SW_BB2:%.*]]
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; CHECK-NEXT: i32 2, label [[SW_BB4:%.*]]
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; CHECK-NEXT: ]
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; CHECK: sw.bb:
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; CHECK-NEXT: [[CALL:%.*]] = call i32 @call0()
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; CHECK-NEXT: br label [[CLEANUP:%.*]]
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; CHECK: sw.bb2:
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; CHECK-NEXT: [[CALL3:%.*]] = call i32 @call1()
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: default.unreachable:
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; CHECK-NEXT: unreachable
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; CHECK: sw.bb4:
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; CHECK-NEXT: [[CALL5:%.*]] = call i32 @call4(i32 [[SUB]])
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: cleanup:
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; CHECK-NEXT: [[RETVAL_0:%.*]] = phi i32 [ [[CALL5]], [[SW_BB4]] ], [ [[CALL3]], [[SW_BB2]] ], [ [[CALL]], [[SW_BB]] ]
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; CHECK-NEXT: ret i32 [[RETVAL_0]]
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;
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entry:
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%sub = add i32 %num, -120
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%cmp = icmp ult i32 %sub, 3
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%cond = select i1 %cmp, i32 %sub, i32 2
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switch i32 %cond, label %sw.bb4 [
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i32 0, label %sw.bb
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i32 1, label %sw.bb2
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i32 2, label %sw.bb4
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]
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sw.bb:
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%call = call i32 @call0()
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br label %cleanup
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sw.bb2:
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%call3 = call i32 @call1()
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br label %cleanup
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sw.bb4:
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%val = phi i32 [ %sub, %entry ], [ %sub, %entry ]
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%call5 = call i32 @call4(i32 %val)
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br label %cleanup
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cleanup:
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%retval.0 = phi i32 [ %call5, %sw.bb4 ], [ %call3, %sw.bb2 ], [ %call, %sw.bb ]
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ret i32 %retval.0
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}
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; Negative tests
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define i32 @test_reachable_default(i32 noundef %num) {
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; CHECK-LABEL: define i32 @test_reachable_default(
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; CHECK-SAME: i32 noundef [[NUM:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[SUB:%.*]] = add i32 [[NUM]], -120
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[SUB]], 3
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; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[SUB]], i32 4
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; CHECK-NEXT: switch i32 [[COND]], label [[SW_DEFAULT:%.*]] [
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; CHECK-NEXT: i32 0, label [[SW_BB:%.*]]
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; CHECK-NEXT: i32 1, label [[SW_BB2:%.*]]
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; CHECK-NEXT: i32 2, label [[SW_BB4:%.*]]
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; CHECK-NEXT: ]
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; CHECK: sw.bb:
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; CHECK-NEXT: [[CALL:%.*]] = call i32 @call0()
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; CHECK-NEXT: br label [[CLEANUP:%.*]]
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; CHECK: sw.bb2:
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; CHECK-NEXT: [[CALL3:%.*]] = call i32 @call1()
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: sw.bb4:
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; CHECK-NEXT: [[CALL5:%.*]] = call i32 @call2()
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: sw.default:
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; CHECK-NEXT: [[CALL6:%.*]] = call i32 @call3()
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: cleanup:
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; CHECK-NEXT: [[RETVAL_0:%.*]] = phi i32 [ [[CALL6]], [[SW_DEFAULT]] ], [ [[CALL5]], [[SW_BB4]] ], [ [[CALL3]], [[SW_BB2]] ], [ [[CALL]], [[SW_BB]] ]
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; CHECK-NEXT: ret i32 [[RETVAL_0]]
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;
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entry:
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%sub = add i32 %num, -120
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%cmp = icmp ult i32 %sub, 3
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%cond = select i1 %cmp, i32 %sub, i32 4
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switch i32 %cond, label %sw.default [
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i32 0, label %sw.bb
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i32 1, label %sw.bb2
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i32 2, label %sw.bb4
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]
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sw.bb:
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%call = call i32 @call0()
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br label %cleanup
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sw.bb2:
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%call3 = call i32 @call1()
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br label %cleanup
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sw.bb4:
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%call5 = call i32 @call2()
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br label %cleanup
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sw.default:
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%call6 = call i32 @call3()
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br label %cleanup
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cleanup:
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%retval.0 = phi i32 [ %call6, %sw.default ], [ %call5, %sw.bb4 ], [ %call3, %sw.bb2 ], [ %call, %sw.bb ]
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ret i32 %retval.0
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}
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define i32 @test_unreachable_default_cond_may_be_undef(i32 %num) {
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; CHECK-LABEL: define i32 @test_unreachable_default_cond_may_be_undef(
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; CHECK-SAME: i32 [[NUM:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[SUB:%.*]] = add i32 [[NUM]], -120
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[SUB]], 3
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; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[SUB]], i32 2
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; CHECK-NEXT: switch i32 [[COND]], label [[SW_DEFAULT:%.*]] [
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; CHECK-NEXT: i32 0, label [[SW_BB:%.*]]
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; CHECK-NEXT: i32 1, label [[SW_BB2:%.*]]
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; CHECK-NEXT: i32 2, label [[SW_BB4:%.*]]
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; CHECK-NEXT: ]
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; CHECK: sw.bb:
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; CHECK-NEXT: [[CALL:%.*]] = call i32 @call0()
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; CHECK-NEXT: br label [[CLEANUP:%.*]]
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; CHECK: sw.bb2:
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; CHECK-NEXT: [[CALL3:%.*]] = call i32 @call1()
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: sw.bb4:
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; CHECK-NEXT: [[CALL5:%.*]] = call i32 @call2()
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: sw.default:
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; CHECK-NEXT: [[CALL6:%.*]] = call i32 @call3()
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: cleanup:
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; CHECK-NEXT: [[RETVAL_0:%.*]] = phi i32 [ [[CALL6]], [[SW_DEFAULT]] ], [ [[CALL5]], [[SW_BB4]] ], [ [[CALL3]], [[SW_BB2]] ], [ [[CALL]], [[SW_BB]] ]
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; CHECK-NEXT: ret i32 [[RETVAL_0]]
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;
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entry:
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%sub = add i32 %num, -120
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%cmp = icmp ult i32 %sub, 3
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%cond = select i1 %cmp, i32 %sub, i32 2
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switch i32 %cond, label %sw.default [
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i32 0, label %sw.bb
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i32 1, label %sw.bb2
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i32 2, label %sw.bb4
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]
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sw.bb:
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%call = call i32 @call0()
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br label %cleanup
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sw.bb2:
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%call3 = call i32 @call1()
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br label %cleanup
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sw.bb4:
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%call5 = call i32 @call2()
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br label %cleanup
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sw.default:
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%call6 = call i32 @call3()
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br label %cleanup
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cleanup:
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%retval.0 = phi i32 [ %call6, %sw.default ], [ %call5, %sw.bb4 ], [ %call3, %sw.bb2 ], [ %call, %sw.bb ]
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ret i32 %retval.0
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}
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define i32 @test_default_is_already_unreachable(i32 %num) {
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; CHECK-LABEL: define i32 @test_default_is_already_unreachable(
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; CHECK-SAME: i32 [[NUM:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[SUB:%.*]] = add i32 [[NUM]], -120
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[SUB]], 3
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; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[SUB]], i32 2
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; CHECK-NEXT: switch i32 [[COND]], label [[SW_DEFAULT:%.*]] [
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; CHECK-NEXT: i32 0, label [[SW_BB:%.*]]
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; CHECK-NEXT: i32 1, label [[SW_BB2:%.*]]
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; CHECK-NEXT: i32 2, label [[SW_BB4:%.*]]
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; CHECK-NEXT: ]
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; CHECK: sw.bb:
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; CHECK-NEXT: [[CALL:%.*]] = call i32 @call0()
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; CHECK-NEXT: br label [[CLEANUP:%.*]]
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; CHECK: sw.bb2:
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; CHECK-NEXT: [[CALL3:%.*]] = call i32 @call1()
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: sw.bb4:
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; CHECK-NEXT: [[CALL5:%.*]] = call i32 @call2()
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; CHECK-NEXT: br label [[CLEANUP]]
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; CHECK: sw.default:
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; CHECK-NEXT: unreachable
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; CHECK: cleanup:
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; CHECK-NEXT: [[RETVAL_0:%.*]] = phi i32 [ [[CALL5]], [[SW_BB4]] ], [ [[CALL3]], [[SW_BB2]] ], [ [[CALL]], [[SW_BB]] ]
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; CHECK-NEXT: ret i32 [[RETVAL_0]]
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;
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entry:
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%sub = add i32 %num, -120
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%cmp = icmp ult i32 %sub, 3
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%cond = select i1 %cmp, i32 %sub, i32 2
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switch i32 %cond, label %sw.default [
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i32 0, label %sw.bb
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i32 1, label %sw.bb2
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i32 2, label %sw.bb4
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]
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sw.bb:
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%call = call i32 @call0()
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br label %cleanup
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sw.bb2:
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%call3 = call i32 @call1()
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br label %cleanup
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sw.bb4:
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%call5 = call i32 @call2()
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br label %cleanup
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sw.default:
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unreachable
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cleanup:
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%retval.0 = phi i32 [ %call5, %sw.bb4 ], [ %call3, %sw.bb2 ], [ %call, %sw.bb ]
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ret i32 %retval.0
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}
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declare i32 @call0()
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declare i32 @call1()
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declare i32 @call2()
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declare i32 @call3()
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declare i32 @call4(i32)
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