derek.holloway
7502bf64a4
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55 lines
2.7 KiB
LLVM
55 lines
2.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=gvn -S < %s | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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;; Make sure we use correct bit shift based on storage size for
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;; loads reusing a load value.
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define i64 @test1(ptr %predA, ptr %predB) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[VALUELOADA_FCA_0_LOAD:%.*]] = load i1, ptr [[PREDA:%.*]], align 8
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; CHECK-NEXT: [[VALUELOADB_FCA_0_LOAD:%.*]] = load i1, ptr [[PREDB:%.*]], align 8
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; CHECK-NEXT: [[ISTRUE:%.*]] = and i1 [[VALUELOADA_FCA_0_LOAD]], [[VALUELOADB_FCA_0_LOAD]]
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; CHECK-NEXT: [[VALUELOADA_FCA_1_GEP:%.*]] = getelementptr inbounds { i1, i8 }, ptr [[PREDA]], i64 0, i32 1
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; CHECK-NEXT: [[VALUELOADA_FCA_1_LOAD:%.*]] = load i8, ptr [[VALUELOADA_FCA_1_GEP]], align 1
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; CHECK-NEXT: [[ISNOTNULLA:%.*]] = icmp ne i8 [[VALUELOADA_FCA_1_LOAD]], 0
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; CHECK-NEXT: [[VALUELOADB_FCA_1_GEP:%.*]] = getelementptr inbounds { i1, i8 }, ptr [[PREDB]], i64 0, i32 1
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; CHECK-NEXT: [[VALUELOADB_FCA_1_LOAD:%.*]] = load i8, ptr [[VALUELOADB_FCA_1_GEP]], align 1
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; CHECK-NEXT: [[ISNOTNULLB:%.*]] = icmp ne i8 [[VALUELOADB_FCA_1_LOAD]], 0
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; CHECK-NEXT: [[ISNOTNULL:%.*]] = and i1 [[ISNOTNULLA]], [[ISNOTNULLB]]
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; CHECK-NEXT: [[ISTRUEANDNOTNULL:%.*]] = and i1 [[ISTRUE]], [[ISNOTNULL]]
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; CHECK-NEXT: [[RET:%.*]] = zext i1 [[ISTRUEANDNOTNULL]] to i64
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; CHECK-NEXT: ret i64 [[RET]]
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;
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%valueLoadA.fca.0.gep = getelementptr inbounds { i1, i8 }, ptr %predA, i64 0, i32 0
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%valueLoadA.fca.0.load = load i1, ptr %valueLoadA.fca.0.gep, align 8
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%valueLoadB.fca.0.gep = getelementptr inbounds { i1, i8 }, ptr %predB, i64 0, i32 0
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%valueLoadB.fca.0.load = load i1, ptr %valueLoadB.fca.0.gep, align 8
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%isTrue = and i1 %valueLoadA.fca.0.load, %valueLoadB.fca.0.load
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%valueLoadA.fca.1.gep = getelementptr inbounds { i1, i8 }, ptr %predA, i64 0, i32 1
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%valueLoadA.fca.1.load = load i8, ptr %valueLoadA.fca.1.gep, align 1
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%isNotNullA = icmp ne i8 %valueLoadA.fca.1.load, 0
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%valueLoadB.fca.1.gep = getelementptr inbounds { i1, i8 }, ptr %predB, i64 0, i32 1
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%valueLoadB.fca.1.load = load i8, ptr %valueLoadB.fca.1.gep, align 1
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%isNotNullB = icmp ne i8 %valueLoadB.fca.1.load, 0
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%isNotNull = and i1 %isNotNullA, %isNotNullB
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%isTrueAndNotNull = and i1 %isTrue, %isNotNull
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%ret = zext i1 %isTrueAndNotNull to i64
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ret i64 %ret
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}
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;; And likewise for loads reusing a store value.
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define i1 @test2(i8 %V, ptr %P) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: store i8 [[V:%.*]], ptr [[P:%.*]], align 1
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i8 [[V]] to i1
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; CHECK-NEXT: ret i1 [[TMP1]]
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;
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store i8 %V, ptr %P
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%A = load i1, ptr %P
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ret i1 %A
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}
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