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https://github.com/RPCS3/llvm-mirror.git
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cf8ee33937
The "null-pointer-is-valid" attribute needs to be checked by many pointer-related combines. To make the check more efficient, convert it from a string into an enum attribute. In the future, this attribute may be replaced with data layout properties. Differential Revision: https://reviews.llvm.org/D78862
126 lines
5.5 KiB
LLVM
126 lines
5.5 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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@test.data = private unnamed_addr addrspace(2) constant [8 x i32] [i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7], align 4
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; CHECK-LABEL: test_load
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; CHECK: %[[GEP:.*]] = getelementptr [8 x i32], [8 x i32] addrspace(2)* @test.data, i64 0, i64 %x
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; CHECK: %{{.*}} = load i32, i32 addrspace(2)* %[[GEP]]
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; CHECK-NOT: alloca
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; CHECK-NOT: call void @llvm.memcpy.p0i8.p2i8.i64
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; CHECK-NOT: addrspacecast
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; CHECK-NOT: load i32, i32*
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define void @test_load(i32 addrspace(1)* %out, i64 %x) {
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entry:
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%data = alloca [8 x i32], align 4
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%0 = bitcast [8 x i32]* %data to i8*
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call void @llvm.memcpy.p0i8.p2i8.i64(i8* align 4 %0, i8 addrspace(2)* align 4 bitcast ([8 x i32] addrspace(2)* @test.data to i8 addrspace(2)*), i64 32, i1 false)
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%arrayidx = getelementptr inbounds [8 x i32], [8 x i32]* %data, i64 0, i64 %x
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%1 = load i32, i32* %arrayidx, align 4
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%arrayidx1 = getelementptr inbounds i32, i32 addrspace(1)* %out, i64 %x
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store i32 %1, i32 addrspace(1)* %arrayidx1, align 4
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ret void
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}
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; CHECK-LABEL: test_load_bitcast_chain
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; CHECK: %[[GEP:.*]] = getelementptr [8 x i32], [8 x i32] addrspace(2)* @test.data, i64 0, i64 %x
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; CHECK: %{{.*}} = load i32, i32 addrspace(2)* %[[GEP]]
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; CHECK-NOT: alloca
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; CHECK-NOT: call void @llvm.memcpy.p0i8.p2i8.i64
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; CHECK-NOT: addrspacecast
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; CHECK-NOT: load i32, i32*
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define void @test_load_bitcast_chain(i32 addrspace(1)* %out, i64 %x) {
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entry:
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%data = alloca [8 x i32], align 4
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%0 = bitcast [8 x i32]* %data to i8*
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call void @llvm.memcpy.p0i8.p2i8.i64(i8* align 4 %0, i8 addrspace(2)* align 4 bitcast ([8 x i32] addrspace(2)* @test.data to i8 addrspace(2)*), i64 32, i1 false)
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%1 = bitcast i8* %0 to i32*
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%arrayidx = getelementptr inbounds i32, i32* %1, i64 %x
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%2 = load i32, i32* %arrayidx, align 4
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%arrayidx1 = getelementptr inbounds i32, i32 addrspace(1)* %out, i64 %x
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store i32 %2, i32 addrspace(1)* %arrayidx1, align 4
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ret void
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}
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; CHECK-LABEL: test_call
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; CHECK: alloca
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; CHECK: call void @llvm.memcpy.p0i8.p2i8.i64
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; CHECK-NOT: addrspacecast
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; CHECK: call i32 @foo(i32* nonnull %{{.*}})
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define void @test_call(i32 addrspace(1)* %out, i64 %x) {
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entry:
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%data = alloca [8 x i32], align 4
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%0 = bitcast [8 x i32]* %data to i8*
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call void @llvm.memcpy.p0i8.p2i8.i64(i8* align 4 %0, i8 addrspace(2)* align 4 bitcast ([8 x i32] addrspace(2)* @test.data to i8 addrspace(2)*), i64 32, i1 false)
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%arrayidx = getelementptr inbounds [8 x i32], [8 x i32]* %data, i64 0, i64 %x
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%1 = call i32 @foo(i32* %arrayidx)
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%arrayidx1 = getelementptr inbounds i32, i32 addrspace(1)* %out, i64 %x
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store i32 %1, i32 addrspace(1)* %arrayidx1, align 4
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ret void
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}
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; CHECK-LABEL: test_call_no_null_opt
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; CHECK: alloca
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; CHECK: call void @llvm.memcpy.p0i8.p2i8.i64
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; CHECK-NOT: addrspacecast
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; CHECK: call i32 @foo(i32* %{{.*}})
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define void @test_call_no_null_opt(i32 addrspace(1)* %out, i64 %x) #0 {
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entry:
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%data = alloca [8 x i32], align 4
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%0 = bitcast [8 x i32]* %data to i8*
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call void @llvm.memcpy.p0i8.p2i8.i64(i8* align 4 %0, i8 addrspace(2)* align 4 bitcast ([8 x i32] addrspace(2)* @test.data to i8 addrspace(2)*), i64 32, i1 false)
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%arrayidx = getelementptr inbounds [8 x i32], [8 x i32]* %data, i64 0, i64 %x
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%1 = call i32 @foo(i32* %arrayidx)
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%arrayidx1 = getelementptr inbounds i32, i32 addrspace(1)* %out, i64 %x
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store i32 %1, i32 addrspace(1)* %arrayidx1, align 4
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ret void
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}
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; CHECK-LABEL: test_load_and_call
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; CHECK: alloca
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; CHECK: call void @llvm.memcpy.p0i8.p2i8.i64
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; CHECK: load i32, i32* %{{.*}}
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; CHECK: call i32 @foo(i32* nonnull %{{.*}})
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; CHECK-NOT: addrspacecast
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; CHECK-NOT: load i32, i32 addrspace(2)*
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define void @test_load_and_call(i32 addrspace(1)* %out, i64 %x, i64 %y) {
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entry:
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%data = alloca [8 x i32], align 4
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%0 = bitcast [8 x i32]* %data to i8*
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call void @llvm.memcpy.p0i8.p2i8.i64(i8* align 4 %0, i8 addrspace(2)* align 4 bitcast ([8 x i32] addrspace(2)* @test.data to i8 addrspace(2)*), i64 32, i1 false)
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%arrayidx = getelementptr inbounds [8 x i32], [8 x i32]* %data, i64 0, i64 %x
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%1 = load i32, i32* %arrayidx, align 4
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%arrayidx1 = getelementptr inbounds i32, i32 addrspace(1)* %out, i64 %x
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store i32 %1, i32 addrspace(1)* %arrayidx1, align 4
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%2 = call i32 @foo(i32* %arrayidx)
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%arrayidx2 = getelementptr inbounds i32, i32 addrspace(1)* %out, i64 %y
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store i32 %2, i32 addrspace(1)* %arrayidx2, align 4
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ret void
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}
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; CHECK-LABEL: test_load_and_call_no_null_opt
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; CHECK: alloca
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; CHECK: call void @llvm.memcpy.p0i8.p2i8.i64
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; CHECK: load i32, i32* %{{.*}}
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; CHECK: call i32 @foo(i32* %{{.*}})
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; CHECK-NOT: addrspacecast
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; CHECK-NOT: load i32, i32 addrspace(2)*
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define void @test_load_and_call_no_null_opt(i32 addrspace(1)* %out, i64 %x, i64 %y) #0 {
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entry:
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%data = alloca [8 x i32], align 4
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%0 = bitcast [8 x i32]* %data to i8*
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call void @llvm.memcpy.p0i8.p2i8.i64(i8* align 4 %0, i8 addrspace(2)* align 4 bitcast ([8 x i32] addrspace(2)* @test.data to i8 addrspace(2)*), i64 32, i1 false)
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%arrayidx = getelementptr inbounds [8 x i32], [8 x i32]* %data, i64 0, i64 %x
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%1 = load i32, i32* %arrayidx, align 4
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%arrayidx1 = getelementptr inbounds i32, i32 addrspace(1)* %out, i64 %x
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store i32 %1, i32 addrspace(1)* %arrayidx1, align 4
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%2 = call i32 @foo(i32* %arrayidx)
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%arrayidx2 = getelementptr inbounds i32, i32 addrspace(1)* %out, i64 %y
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store i32 %2, i32 addrspace(1)* %arrayidx2, align 4
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ret void
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}
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declare void @llvm.memcpy.p0i8.p2i8.i64(i8* nocapture writeonly, i8 addrspace(2)* nocapture readonly, i64, i1)
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declare i32 @foo(i32* %x)
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attributes #0 = { null_pointer_is_valid }
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