forked from OSchip/llvm-project
264 lines
10 KiB
LLVM
264 lines
10 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; Replace a 'select' with 'or' in 'select - cmp [eq|ne] - br' sequence
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; RUN: opt -instcombine -S < %s | FileCheck %s
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%struct.S = type { i64*, i32, i32 }
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%C = type <{ %struct.S }>
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declare void @bar(%struct.S*)
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declare void @foobar()
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define void @test1(%C* %arg) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP:%.*]] = getelementptr inbounds [[C:%.*]], %C* [[ARG:%.*]], i64 0, i32 0, i32 0
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; CHECK-NEXT: [[M:%.*]] = load i64*, i64** [[TMP]], align 8
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[C]], %C* [[ARG]], i64 1, i32 0, i32 0
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; CHECK-NEXT: [[N:%.*]] = load i64*, i64** [[TMP1]], align 8
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; CHECK-NEXT: [[NOT_TMP5:%.*]] = icmp ne i64* [[M]], [[N]]
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; CHECK-NEXT: [[TMP71:%.*]] = icmp eq %C* [[ARG]], null
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; CHECK-NEXT: [[TMP7:%.*]] = or i1 [[TMP71]], [[NOT_TMP5]]
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; CHECK-NEXT: br i1 [[TMP7]], label [[BB10:%.*]], label [[BB8:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: ret void
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; CHECK: bb8:
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; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds [[C]], %C* [[ARG]], i64 0, i32 0
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; CHECK-NEXT: tail call void @bar(%struct.S* [[TMP9]])
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb10:
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i64, i64* [[M]], i64 9
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; CHECK-NEXT: [[TMP3:%.*]] = bitcast i64* [[TMP2]] to i64 (%C*)**
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; CHECK-NEXT: [[TMP4:%.*]] = load i64 (%C*)*, i64 (%C*)** [[TMP3]], align 8
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; CHECK-NEXT: [[TMP11:%.*]] = tail call i64 [[TMP4]](%C* [[ARG]])
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; CHECK-NEXT: br label [[BB]]
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;
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entry:
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%tmp = getelementptr inbounds %C, %C* %arg, i64 0, i32 0, i32 0
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%m = load i64*, i64** %tmp, align 8
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%tmp1 = getelementptr inbounds %C, %C* %arg, i64 1, i32 0, i32 0
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%n = load i64*, i64** %tmp1, align 8
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%tmp2 = getelementptr inbounds i64, i64* %m, i64 9
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%tmp3 = bitcast i64* %tmp2 to i64 (%C*)**
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%tmp4 = load i64 (%C*)*, i64 (%C*)** %tmp3, align 8
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%tmp5 = icmp eq i64* %m, %n
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%tmp6 = select i1 %tmp5, %C* %arg, %C* null
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%tmp7 = icmp eq %C* %tmp6, null
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br i1 %tmp7, label %bb10, label %bb8
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bb: ; preds = %bb10, %bb8
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ret void
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bb8: ; preds = %entry
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%tmp9 = getelementptr inbounds %C, %C* %tmp6, i64 0, i32 0
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tail call void @bar(%struct.S* %tmp9)
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br label %bb
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bb10: ; preds = %entry
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%tmp11 = tail call i64 %tmp4(%C* %arg)
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br label %bb
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}
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define void @test2(%C* %arg) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP:%.*]] = getelementptr inbounds [[C:%.*]], %C* [[ARG:%.*]], i64 0, i32 0, i32 0
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; CHECK-NEXT: [[M:%.*]] = load i64*, i64** [[TMP]], align 8
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[C]], %C* [[ARG]], i64 1, i32 0, i32 0
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; CHECK-NEXT: [[N:%.*]] = load i64*, i64** [[TMP1]], align 8
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; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i64* [[M]], [[N]]
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; CHECK-NEXT: [[TMP71:%.*]] = icmp eq %C* [[ARG]], null
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; CHECK-NEXT: [[TMP7:%.*]] = or i1 [[TMP5]], [[TMP71]]
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; CHECK-NEXT: br i1 [[TMP7]], label [[BB10:%.*]], label [[BB8:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: ret void
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; CHECK: bb8:
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; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds [[C]], %C* [[ARG]], i64 0, i32 0
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; CHECK-NEXT: tail call void @bar(%struct.S* [[TMP9]])
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb10:
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i64, i64* [[M]], i64 9
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; CHECK-NEXT: [[TMP3:%.*]] = bitcast i64* [[TMP2]] to i64 (%C*)**
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; CHECK-NEXT: [[TMP4:%.*]] = load i64 (%C*)*, i64 (%C*)** [[TMP3]], align 8
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; CHECK-NEXT: [[TMP11:%.*]] = tail call i64 [[TMP4]](%C* [[ARG]])
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; CHECK-NEXT: br label [[BB]]
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;
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entry:
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%tmp = getelementptr inbounds %C, %C* %arg, i64 0, i32 0, i32 0
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%m = load i64*, i64** %tmp, align 8
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%tmp1 = getelementptr inbounds %C, %C* %arg, i64 1, i32 0, i32 0
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%n = load i64*, i64** %tmp1, align 8
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%tmp2 = getelementptr inbounds i64, i64* %m, i64 9
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%tmp3 = bitcast i64* %tmp2 to i64 (%C*)**
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%tmp4 = load i64 (%C*)*, i64 (%C*)** %tmp3, align 8
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%tmp5 = icmp eq i64* %m, %n
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%tmp6 = select i1 %tmp5, %C* null, %C* %arg
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%tmp7 = icmp eq %C* %tmp6, null
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br i1 %tmp7, label %bb10, label %bb8
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bb: ; preds = %bb10, %bb8
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ret void
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bb8: ; preds = %entry
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%tmp9 = getelementptr inbounds %C, %C* %tmp6, i64 0, i32 0
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tail call void @bar(%struct.S* %tmp9)
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br label %bb
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bb10: ; preds = %entry
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%tmp11 = tail call i64 %tmp4(%C* %arg)
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br label %bb
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}
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define void @test3(%C* %arg) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP:%.*]] = getelementptr inbounds [[C:%.*]], %C* [[ARG:%.*]], i64 0, i32 0, i32 0
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; CHECK-NEXT: [[M:%.*]] = load i64*, i64** [[TMP]], align 8
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[C]], %C* [[ARG]], i64 1, i32 0, i32 0
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; CHECK-NEXT: [[N:%.*]] = load i64*, i64** [[TMP1]], align 8
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; CHECK-NEXT: [[NOT_TMP5:%.*]] = icmp ne i64* [[M]], [[N]]
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; CHECK-NEXT: [[TMP71:%.*]] = icmp eq %C* [[ARG]], null
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; CHECK-NEXT: [[TMP7:%.*]] = or i1 [[TMP71]], [[NOT_TMP5]]
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; CHECK-NEXT: br i1 [[TMP7]], label [[BB10:%.*]], label [[BB8:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: ret void
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; CHECK: bb8:
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; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds [[C]], %C* [[ARG]], i64 0, i32 0
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; CHECK-NEXT: tail call void @bar(%struct.S* [[TMP9]])
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb10:
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i64, i64* [[M]], i64 9
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; CHECK-NEXT: [[TMP3:%.*]] = bitcast i64* [[TMP2]] to i64 (%C*)**
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; CHECK-NEXT: [[TMP4:%.*]] = load i64 (%C*)*, i64 (%C*)** [[TMP3]], align 8
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; CHECK-NEXT: [[TMP11:%.*]] = tail call i64 [[TMP4]](%C* [[ARG]])
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; CHECK-NEXT: br label [[BB]]
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;
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entry:
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%tmp = getelementptr inbounds %C, %C* %arg, i64 0, i32 0, i32 0
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%m = load i64*, i64** %tmp, align 8
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%tmp1 = getelementptr inbounds %C, %C* %arg, i64 1, i32 0, i32 0
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%n = load i64*, i64** %tmp1, align 8
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%tmp2 = getelementptr inbounds i64, i64* %m, i64 9
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%tmp3 = bitcast i64* %tmp2 to i64 (%C*)**
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%tmp4 = load i64 (%C*)*, i64 (%C*)** %tmp3, align 8
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%tmp5 = icmp eq i64* %m, %n
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%tmp6 = select i1 %tmp5, %C* %arg, %C* null
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%tmp7 = icmp ne %C* %tmp6, null
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br i1 %tmp7, label %bb8, label %bb10
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bb: ; preds = %bb10, %bb8
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ret void
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bb8: ; preds = %entry
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%tmp9 = getelementptr inbounds %C, %C* %tmp6, i64 0, i32 0
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tail call void @bar(%struct.S* %tmp9)
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br label %bb
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bb10: ; preds = %entry
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%tmp11 = tail call i64 %tmp4(%C* %arg)
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br label %bb
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}
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define void @test4(%C* %arg) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP:%.*]] = getelementptr inbounds [[C:%.*]], %C* [[ARG:%.*]], i64 0, i32 0, i32 0
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; CHECK-NEXT: [[M:%.*]] = load i64*, i64** [[TMP]], align 8
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[C]], %C* [[ARG]], i64 1, i32 0, i32 0
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; CHECK-NEXT: [[N:%.*]] = load i64*, i64** [[TMP1]], align 8
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; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i64* [[M]], [[N]]
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; CHECK-NEXT: [[TMP71:%.*]] = icmp eq %C* [[ARG]], null
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; CHECK-NEXT: [[TMP7:%.*]] = or i1 [[TMP5]], [[TMP71]]
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; CHECK-NEXT: br i1 [[TMP7]], label [[BB10:%.*]], label [[BB8:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: ret void
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; CHECK: bb8:
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; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds [[C]], %C* [[ARG]], i64 0, i32 0
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; CHECK-NEXT: tail call void @bar(%struct.S* [[TMP9]])
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb10:
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i64, i64* [[M]], i64 9
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; CHECK-NEXT: [[TMP3:%.*]] = bitcast i64* [[TMP2]] to i64 (%C*)**
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; CHECK-NEXT: [[TMP4:%.*]] = load i64 (%C*)*, i64 (%C*)** [[TMP3]], align 8
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; CHECK-NEXT: [[TMP11:%.*]] = tail call i64 [[TMP4]](%C* [[ARG]])
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; CHECK-NEXT: br label [[BB]]
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;
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entry:
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%tmp = getelementptr inbounds %C, %C* %arg, i64 0, i32 0, i32 0
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%m = load i64*, i64** %tmp, align 8
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%tmp1 = getelementptr inbounds %C, %C* %arg, i64 1, i32 0, i32 0
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%n = load i64*, i64** %tmp1, align 8
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%tmp2 = getelementptr inbounds i64, i64* %m, i64 9
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%tmp3 = bitcast i64* %tmp2 to i64 (%C*)**
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%tmp4 = load i64 (%C*)*, i64 (%C*)** %tmp3, align 8
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%tmp5 = icmp eq i64* %m, %n
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%tmp6 = select i1 %tmp5, %C* null, %C* %arg
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%tmp7 = icmp ne %C* %tmp6, null
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br i1 %tmp7, label %bb8, label %bb10
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bb: ; preds = %bb10, %bb8
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ret void
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bb8: ; preds = %entry
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%tmp9 = getelementptr inbounds %C, %C* %tmp6, i64 0, i32 0
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tail call void @bar(%struct.S* %tmp9)
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br label %bb
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bb10: ; preds = %entry
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%tmp11 = tail call i64 %tmp4(%C* %arg)
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br label %bb
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}
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define void @test5(%C* %arg, i1 %arg1) {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP21:%.*]] = icmp eq %C* [[ARG:%.*]], null
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; CHECK-NEXT: [[TMP2:%.*]] = or i1 [[TMP21]], [[ARG1:%.*]]
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; CHECK-NEXT: br i1 [[TMP2]], label [[BB5:%.*]], label [[BB3:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: ret void
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; CHECK: bb3:
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; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds [[C:%.*]], %C* [[ARG]], i64 0, i32 0
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; CHECK-NEXT: tail call void @bar(%struct.S* [[TMP4]])
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb5:
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; CHECK-NEXT: tail call void @foobar()
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; CHECK-NEXT: br label [[BB]]
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;
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entry:
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%tmp = select i1 %arg1, %C* null, %C* %arg
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%tmp2 = icmp ne %C* %tmp, null
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br i1 %tmp2, label %bb3, label %bb5
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bb: ; preds = %bb5, %bb3
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ret void
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bb3: ; preds = %entry
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%tmp4 = getelementptr inbounds %C, %C* %tmp, i64 0, i32 0
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tail call void @bar(%struct.S* %tmp4)
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br label %bb
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bb5: ; preds = %entry
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tail call void @foobar()
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br label %bb
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}
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; Negative test. Must not trigger the select-cmp-br combine because the result
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; of the select is used in both flows following the br (the special case where
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; the conditional branch has the same target for both flows).
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define i32 @test6(i32 %arg, i1 %arg1) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 false, label [[BB:%.*]], label [[BB]]
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; CHECK: bb:
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; CHECK-NEXT: [[TMP:%.*]] = select i1 [[ARG1:%.*]], i32 [[ARG:%.*]], i32 0
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; CHECK-NEXT: ret i32 [[TMP]]
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;
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entry:
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%tmp = select i1 %arg1, i32 %arg, i32 0
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%tmp2 = icmp eq i32 %tmp, 0
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br i1 %tmp2, label %bb, label %bb
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bb: ; preds = %entry, %entry
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ret i32 %tmp
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}
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