Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/SimplifyCFG/phi-undef-loadstore.ll

@@ -1,115 +0,0 @@
-; RUN: opt -simplifycfg -S < %s | FileCheck %s
-
-declare void @bar() nounwind
-
-define i32 @test1(i32* %a, i32 %b, i32* %c, i32 %d) nounwind {
-entry:
-  %tobool = icmp eq i32 %b, 0
-  br i1 %tobool, label %if.else, label %if.then
-
-if.then:                                          ; preds = %entry
-  tail call void @bar() nounwind
-  br label %if.end7
-
-if.else:                                          ; preds = %entry
-  %tobool3 = icmp eq i32 %d, 0
-  br i1 %tobool3, label %if.end7, label %if.then4
-
-if.then4:                                         ; preds = %if.else
-  tail call void @bar() nounwind
-  br label %if.end7
-
-if.end7:                                          ; preds = %if.else, %if.then4, %if.then
-  %x.0 = phi i32* [ %a, %if.then ], [ %c, %if.then4 ], [ null, %if.else ]
-  %tmp9 = load i32, i32* %x.0
-  ret i32 %tmp9
-
-; CHECK-LABEL: @test1(
-; CHECK: if.else:
-; CHECK: br label %if.end7
-
-; CHECK: phi i32* [ %a, %if.then ], [ %c, %if.else ]
-}
-
-define i32 @test2(i32* %a, i32 %b, i32* %c, i32 %d) nounwind {
-entry:
-  %tobool = icmp eq i32 %b, 0
-  br i1 %tobool, label %if.else, label %if.then
-
-if.then:                                          ; preds = %entry
-  tail call void @bar() nounwind
-  br label %if.end7
-
-if.else:                                          ; preds = %entry
-  %tobool3 = icmp eq i32 %d, 0
-  br i1 %tobool3, label %if.end7, label %if.then4
-
-if.then4:                                         ; preds = %if.else
-  tail call void @bar() nounwind
-  br label %if.end7
-
-if.end7:                                          ; preds = %if.else, %if.then4, %if.then
-  %x.0 = phi i32* [ %a, %if.then ], [ null, %if.then4 ], [ null, %if.else ]
-  %tmp9 = load i32, i32* %x.0
-  ret i32 %tmp9
-; CHECK-LABEL: @test2(
-; CHECK: if.else:
-; CHECK: unreachable
-
-; CHECK-NOT: phi
-}
-
-define i32 @test3(i32* %a, i32 %b, i32* %c, i32 %d) nounwind {
-entry:
-  %tobool = icmp eq i32 %b, 0
-  br i1 %tobool, label %if.else, label %if.then
-
-if.then:                                          ; preds = %entry
-  tail call void @bar() nounwind
-  br label %if.end7
-
-if.else:                                          ; preds = %entry
-  %tobool3 = icmp eq i32 %d, 0
-  br i1 %tobool3, label %if.end7, label %if.then4
-
-if.then4:                                         ; preds = %if.else
-  tail call void @bar() nounwind
-  br label %if.end7
-
-if.end7:                                          ; preds = %if.else, %if.then4, %if.then
-  %x.0 = phi i32* [ %a, %if.then ], [ null, %if.then4 ], [ null, %if.else ]
-  tail call void @bar() nounwind
-  %tmp9 = load i32, i32* %x.0
-  ret i32 %tmp9
-; CHECK-LABEL: @test3(
-; CHECK: if.end7:
-; CHECK: phi i32* [ %a, %if.then ], [ null, %if.then4 ], [ null, %if.else ]
-}
-
-define i32 @test4(i32* %a, i32 %b, i32* %c, i32 %d) nounwind {
-entry:
-  %tobool = icmp eq i32 %b, 0
-  br i1 %tobool, label %if.else, label %if.then
-
-if.then:                                          ; preds = %entry
-  tail call void @bar() nounwind
-  br label %if.end7
-
-if.else:                                          ; preds = %entry
-  %tobool3 = icmp eq i32 %d, 0
-  br i1 %tobool3, label %if.end7, label %if.then4
-
-if.then4:                                         ; preds = %if.else
-  tail call void @bar() nounwind
-  br label %if.end7
-
-if.end7:                                          ; preds = %if.else, %if.then4, %if.then
-  %x.0 = phi i32* [ %a, %if.then ], [ null, %if.then4 ], [ null, %if.else ]
-  %gep = getelementptr i32, i32* %x.0, i32 10
-  %tmp9 = load i32, i32* %gep
-  %tmp10 = or i32 %tmp9, 1
-  store i32 %tmp10, i32* %gep
-  ret i32 %tmp9
-; CHECK-LABEL: @test4(
-; CHECK-NOT: phi
-}