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