73 lines
2.4 KiB
LLVM
73 lines
2.4 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
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; Compiler should not be broken with a dead user.
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; RUN: opt -passes=sink -S < %s | FileCheck %s
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define void @test(i16 %p1) {
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; CHECK-LABEL: define void @test(
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; CHECK-SAME: i16 [[P1:%.*]]) {
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; CHECK-NEXT: bb.0:
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; CHECK-NEXT: [[CONV:%.*]] = sext i16 [[P1]] to i32
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; CHECK-NEXT: br i1 undef, label [[BB_1:%.*]], label [[BB_3:%.*]]
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; CHECK: bb.1:
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; CHECK-NEXT: br label [[BB_2:%.*]]
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; CHECK: bb.2:
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; CHECK-NEXT: [[AND_2:%.*]] = and i32 undef, [[CONV]]
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; CHECK-NEXT: br label [[BB_2]]
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; CHECK: bb.3:
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; CHECK-NEXT: [[AND_3:%.*]] = and i32 undef, [[CONV]]
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; CHECK-NEXT: br label [[BB_3]]
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; CHECK: dead:
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; CHECK-NEXT: [[AND_DEAD:%.*]] = and i32 undef, [[CONV]]
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; CHECK-NEXT: br label [[DEAD:%.*]]
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;
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bb.0:
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%conv = sext i16 %p1 to i32
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br i1 undef, label %bb.1, label %bb.3
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bb.1: ; preds = %bb.0
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br label %bb.2
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bb.2: ; preds = %bb.2, %bb.1
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%and.2 = and i32 undef, %conv
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br label %bb.2
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bb.3: ; preds = %bb.3, %bb.0
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%and.3 = and i32 undef, %conv
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br label %bb.3
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dead: ; preds = %dead
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%and.dead = and i32 undef, %conv
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br label %dead
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}
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define i32 @dead_from_phi(i32 %a) {
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; CHECK-LABEL: define i32 @dead_from_phi(
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; CHECK-SAME: i32 [[A:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[DOTNOT:%.*]] = icmp eq i32 [[A]], 0
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; CHECK-NEXT: br i1 [[DOTNOT]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: [[B:%.*]] = and i32 undef, 65535
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; CHECK-NEXT: br label [[IF_END]]
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; CHECK: dead:
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; CHECK-NEXT: br label [[IF_END]]
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; CHECK: if.end:
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; CHECK-NEXT: [[DOT0:%.*]] = phi i32 [ [[A]], [[ENTRY:%.*]] ], [ [[B]], [[IF_THEN]] ], [ [[B]], [[DEAD:%.*]] ]
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; CHECK-NEXT: ret i32 [[DOT0]]
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;
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entry:
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%.not = icmp eq i32 %a, 0
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br i1 %.not, label %if.end, label %if.then
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if.then: ; preds = %1
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%b = and i32 undef, 65535
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br label %if.end
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dead: ; No predecessors!
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br label %if.end
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if.end: ; preds = %4, %if.then, %1
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%.0 = phi i32 [ %a, %entry ], [ %b, %if.then ], [ %b, %dead ]
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ret i32 %.0
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}
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