derek.holloway
7502bf64a4
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111 lines
3.1 KiB
LLVM
111 lines
3.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=simplifycfg,adce -simplifycfg-require-and-preserve-domtree=1 -keep-loops="false" -S | FileCheck %s
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declare void @f1()
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declare void @f2()
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declare void @f3()
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declare void @f4()
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define i32 @test1(i32 %X, i1 %D) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: E:
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; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: br i1 [[C]], label [[B:%.*]], label [[F:%.*]]
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; CHECK: common.ret:
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; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ 345, [[B]] ], [ 123, [[F]] ]
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; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
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; CHECK: B:
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; CHECK-NEXT: call void @f2()
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; CHECK-NEXT: br label [[COMMON_RET:%.*]]
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; CHECK: F:
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; CHECK-NEXT: call void @f3()
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; CHECK-NEXT: br label [[COMMON_RET]]
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;
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E:
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%C = icmp eq i32 %X, 0 ; <i1> [#uses=2]
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br i1 %C, label %T, label %F
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T: ; preds = %A, %E
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br i1 %C, label %B, label %A
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A: ; preds = %T
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call void @f1( )
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br i1 %D, label %T, label %F
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B: ; preds = %T
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call void @f2( )
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ret i32 345
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F: ; preds = %A, %E
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call void @f3( )
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ret i32 123
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}
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define i32 @test2(i32 %X, i1 %D) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: E:
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; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: br i1 [[C]], label [[B:%.*]], label [[F:%.*]]
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; CHECK: common.ret:
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; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ 345, [[B]] ], [ 123, [[F]] ]
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; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
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; CHECK: B:
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; CHECK-NEXT: call void @f2()
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; CHECK-NEXT: br label [[COMMON_RET:%.*]]
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; CHECK: F:
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; CHECK-NEXT: call void @f3()
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; CHECK-NEXT: br label [[COMMON_RET]]
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;
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E:
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%C = icmp eq i32 %X, 0 ; <i1> [#uses=2]
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br i1 %C, label %T, label %F
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T: ; preds = %A, %E
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%P = phi i1 [ true, %E ], [ %C, %A ] ; <i1> [#uses=1]
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br i1 %P, label %B, label %A
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A: ; preds = %T
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call void @f1( )
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br i1 %D, label %T, label %F
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B: ; preds = %T
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call void @f2( )
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ret i32 345
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F: ; preds = %A, %E
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call void @f3( )
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ret i32 123
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}
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define i32 @test3(i32 %X, i1 %D, ptr %AP, ptr %BP) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: E:
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; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: br i1 [[C]], label [[B_CRITEDGE:%.*]], label [[F:%.*]]
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; CHECK: common.ret:
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; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ 345, [[B_CRITEDGE]] ], [ 123, [[F]] ]
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; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
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; CHECK: B.critedge:
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; CHECK-NEXT: call void @f3()
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; CHECK-NEXT: [[XX_C:%.*]] = load i32, ptr [[AP:%.*]], align 4
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; CHECK-NEXT: store i32 [[XX_C]], ptr [[BP:%.*]], align 4
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; CHECK-NEXT: call void @f2()
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; CHECK-NEXT: br label [[COMMON_RET:%.*]]
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; CHECK: F:
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; CHECK-NEXT: call void @f3()
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; CHECK-NEXT: br label [[COMMON_RET]]
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;
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E:
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%C = icmp eq i32 %X, 0 ; <i1> [#uses=2]
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br i1 %C, label %T, label %F
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T: ; preds = %A, %E
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call void @f3( )
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%XX = load i32, ptr %AP ; <i32> [#uses=1]
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store i32 %XX, ptr %BP
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br i1 %C, label %B, label %A
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A: ; preds = %T
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call void @f1( )
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br i1 %D, label %T, label %F
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B: ; preds = %T
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call void @f2( )
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ret i32 345
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F: ; preds = %A, %E
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call void @f3( )
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ret i32 123
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}
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