| ; RUN: opt -newgvn -S < %s | FileCheck %s |
| |
| target datalayout = "E-m:e-i64:64-n32:64" |
| target triple = "powerpc64-unknown-linux-gnu" |
| |
| ;; Make sure we use correct bit shift based on storage size for |
| ;; loads reusing a load value. |
| define i64 @test1({ i1, i8 }* %predA, { i1, i8 }* %predB) { |
| ; CHECK-LABEL: @test1 |
| ; CHECK-NOT: [[V1:%.*]] = load i16, i16* %{{.*}} |
| ; CHECK-NOT: [[V2:%.*]] = lshr i16 [[V1]], 8 |
| ; CHECK-NOT: trunc i16 [[V2]] to i1 |
| |
| %valueLoadA.fca.0.gep = getelementptr inbounds { i1, i8 }, { i1, i8 }* %predA, i64 0, i32 0 |
| %valueLoadA.fca.0.load = load i1, i1* %valueLoadA.fca.0.gep, align 8 |
| %valueLoadB.fca.0.gep = getelementptr inbounds { i1, i8 }, { i1, i8 }* %predB, i64 0, i32 0 |
| %valueLoadB.fca.0.load = load i1, i1* %valueLoadB.fca.0.gep, align 8 |
| %isTrue = and i1 %valueLoadA.fca.0.load, %valueLoadB.fca.0.load |
| %valueLoadA.fca.1.gep = getelementptr inbounds { i1, i8 }, { i1, i8 }* %predA, i64 0, i32 1 |
| %valueLoadA.fca.1.load = load i8, i8* %valueLoadA.fca.1.gep, align 1 |
| %isNotNullA = icmp ne i8 %valueLoadA.fca.1.load, 0 |
| %valueLoadB.fca.1.gep = getelementptr inbounds { i1, i8 }, { i1, i8 }* %predB, i64 0, i32 1 |
| %valueLoadB.fca.1.load = load i8, i8* %valueLoadB.fca.1.gep, align 1 |
| %isNotNullB = icmp ne i8 %valueLoadB.fca.1.load, 0 |
| %isNotNull = and i1 %isNotNullA, %isNotNullB |
| %isTrueAndNotNull = and i1 %isTrue, %isNotNull |
| %ret = zext i1 %isTrueAndNotNull to i64 |
| ret i64 %ret |
| } |
| |
| ;; And likewise for loads reusing a store value. |
| define i1 @test2(i8 %V, i8* %P) { |
| ; CHECK-LABEL: @test2 |
| ; CHECK-NOT: lshr |
| store i8 %V, i8* %P |
| %P2 = bitcast i8* %P to i1* |
| %A = load i1, i1* %P2 |
| ret i1 %A |
| } |
| |
