mirror of
https://github.com/c64scene-ar/llvm-6502.git
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128 lines
5.1 KiB
LLVM
128 lines
5.1 KiB
LLVM
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; RUN: opt -S -lowerbitsets < %s | FileCheck %s
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; RUN: opt -S -O3 < %s | FileCheck -check-prefix=CHECK-NODISCARD %s
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target datalayout = "e-p:32:32"
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; CHECK: [[G:@[^ ]*]] = private constant { i32, [63 x i32], i32, [2 x i32] } { i32 1, [63 x i32] zeroinitializer, i32 3, [2 x i32] [i32 4, i32 5] }
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@a = constant i32 1
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@b = constant [63 x i32] zeroinitializer
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@c = constant i32 3
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@d = constant [2 x i32] [i32 4, i32 5]
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; Offset 0, 4 byte alignment
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; CHECK: @bitset1.bits = private constant [9 x i8] c"\03\00\00\00\00\00\00\00\04"
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!0 = !{!"bitset1", i32* @a, i32 0}
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; CHECK-NODISCARD-DAG: !{!"bitset1", i32* @a, i32 0}
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!1 = !{!"bitset1", [63 x i32]* @b, i32 0}
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; CHECK-NODISCARD-DAG: !{!"bitset1", [63 x i32]* @b, i32 0}
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!2 = !{!"bitset1", [2 x i32]* @d, i32 4}
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; CHECK-NODISCARD-DAG: !{!"bitset1", [2 x i32]* @d, i32 4}
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; Offset 4, 4 byte alignment
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; CHECK: @bitset2.bits = private constant [8 x i8] c"\01\00\00\00\00\00\00\80"
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!3 = !{!"bitset2", [63 x i32]* @b, i32 0}
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; CHECK-NODISCARD-DAG: !{!"bitset2", [63 x i32]* @b, i32 0}
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!4 = !{!"bitset2", i32* @c, i32 0}
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; CHECK-NODISCARD-DAG: !{!"bitset2", i32* @c, i32 0}
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; Offset 0, 256 byte alignment
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; CHECK: @bitset3.bits = private constant [1 x i8] c"\03"
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!5 = !{!"bitset3", i32* @a, i32 0}
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; CHECK-NODISCARD-DAG: !{!"bitset3", i32* @a, i32 0}
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!6 = !{!"bitset3", i32* @c, i32 0}
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; CHECK-NODISCARD-DAG: !{!"bitset3", i32* @c, i32 0}
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; Entries whose second operand is null (the result of a global being DCE'd)
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; should be ignored.
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!7 = !{!"bitset2", null, i32 0}
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!llvm.bitsets = !{ !0, !1, !2, !3, !4, !5, !6, !7 }
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; CHECK: @a = alias getelementptr inbounds ({ i32, [63 x i32], i32, [2 x i32] }* [[G]], i32 0, i32 0)
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; CHECK: @b = alias getelementptr inbounds ({ i32, [63 x i32], i32, [2 x i32] }* [[G]], i32 0, i32 1)
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; CHECK: @c = alias getelementptr inbounds ({ i32, [63 x i32], i32, [2 x i32] }* [[G]], i32 0, i32 2)
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; CHECK: @d = alias getelementptr inbounds ({ i32, [63 x i32], i32, [2 x i32] }* [[G]], i32 0, i32 3)
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declare i1 @llvm.bitset.test(i8* %ptr, metadata %bitset) nounwind readnone
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; CHECK: @foo(i32* [[A0:%[^ ]*]])
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define i1 @foo(i32* %p) {
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; CHECK-NOT: llvm.bitset.test
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; CHECK: [[R0:%[^ ]*]] = bitcast i32* [[A0]] to i8*
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%pi8 = bitcast i32* %p to i8*
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; CHECK: [[R1:%[^ ]*]] = ptrtoint i8* [[R0]] to i32
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; CHECK: [[R2:%[^ ]*]] = sub i32 [[R1]], ptrtoint ({ i32, [63 x i32], i32, [2 x i32] }* [[G]] to i32)
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; CHECK: [[R3:%[^ ]*]] = lshr i32 [[R2]], 2
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; CHECK: [[R4:%[^ ]*]] = shl i32 [[R2]], 30
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; CHECK: [[R5:%[^ ]*]] = or i32 [[R3]], [[R4]]
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; CHECK: [[R6:%[^ ]*]] = icmp ult i32 [[R5]], 67
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; CHECK: br i1 [[R6]]
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; CHECK: [[R8:%[^ ]*]] = lshr i32 [[R5]], 5
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; CHECK: [[R9:%[^ ]*]] = getelementptr i32* bitcast ([9 x i8]* @bitset1.bits to i32*), i32 [[R8]]
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; CHECK: [[R10:%[^ ]*]] = load i32* [[R9]]
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; CHECK: [[R11:%[^ ]*]] = and i32 [[R5]], 31
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; CHECK: [[R12:%[^ ]*]] = shl i32 1, [[R11]]
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; CHECK: [[R13:%[^ ]*]] = and i32 [[R10]], [[R12]]
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; CHECK: [[R14:%[^ ]*]] = icmp ne i32 [[R13]], 0
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; CHECK: [[R16:%[^ ]*]] = phi i1 [ false, {{%[^ ]*}} ], [ [[R14]], {{%[^ ]*}} ]
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%x = call i1 @llvm.bitset.test(i8* %pi8, metadata !"bitset1")
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; CHECK-NOT: llvm.bitset.test
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%y = call i1 @llvm.bitset.test(i8* %pi8, metadata !"bitset1")
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; CHECK: ret i1 [[R16]]
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ret i1 %x
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}
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; CHECK: @bar(i32* [[B0:%[^ ]*]])
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define i1 @bar(i32* %p) {
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; CHECK: [[S0:%[^ ]*]] = bitcast i32* [[B0]] to i8*
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%pi8 = bitcast i32* %p to i8*
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; CHECK: [[S1:%[^ ]*]] = ptrtoint i8* [[S0]] to i32
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; CHECK: [[S2:%[^ ]*]] = sub i32 [[S1]], add (i32 ptrtoint ({ i32, [63 x i32], i32, [2 x i32] }* [[G]] to i32), i32 4)
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; CHECK: [[S3:%[^ ]*]] = lshr i32 [[S2]], 2
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; CHECK: [[S4:%[^ ]*]] = shl i32 [[S2]], 30
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; CHECK: [[S5:%[^ ]*]] = or i32 [[S3]], [[S4]]
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; CHECK: [[S6:%[^ ]*]] = icmp ult i32 [[S5]], 64
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; CHECK: br i1 [[S6]]
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; CHECK: [[S8:%[^ ]*]] = zext i32 [[S5]] to i64
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; CHECK: [[S9:%[^ ]*]] = and i64 [[S8]], 63
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; CHECK: [[S10:%[^ ]*]] = shl i64 1, [[S9]]
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; CHECK: [[S11:%[^ ]*]] = and i64 -9223372036854775807, [[S10]]
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; CHECK: [[S12:%[^ ]*]] = icmp ne i64 [[S11]], 0
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; CHECK: [[S16:%[^ ]*]] = phi i1 [ false, {{%[^ ]*}} ], [ [[S12]], {{%[^ ]*}} ]
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%x = call i1 @llvm.bitset.test(i8* %pi8, metadata !"bitset2")
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; CHECK: ret i1 [[S16]]
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ret i1 %x
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}
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; CHECK: @baz(i32* [[C0:%[^ ]*]])
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define i1 @baz(i32* %p) {
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; CHECK: [[T0:%[^ ]*]] = bitcast i32* [[C0]] to i8*
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%pi8 = bitcast i32* %p to i8*
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; CHECK: [[T1:%[^ ]*]] = ptrtoint i8* [[T0]] to i32
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; CHECK: [[T2:%[^ ]*]] = sub i32 [[T1]], ptrtoint ({ i32, [63 x i32], i32, [2 x i32] }* [[G]] to i32)
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; CHECK: [[T3:%[^ ]*]] = lshr i32 [[T2]], 8
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; CHECK: [[T4:%[^ ]*]] = shl i32 [[T2]], 24
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; CHECK: [[T5:%[^ ]*]] = or i32 [[T3]], [[T4]]
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; CHECK: [[T6:%[^ ]*]] = icmp ult i32 [[T5]], 2
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; CHECK: br i1 [[T6]]
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; CHECK: [[T8:%[^ ]*]] = and i32 [[T5]], 31
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; CHECK: [[T9:%[^ ]*]] = shl i32 1, [[T8]]
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; CHECK: [[T10:%[^ ]*]] = and i32 3, [[T9]]
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; CHECK: [[T11:%[^ ]*]] = icmp ne i32 [[T10]], 0
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; CHECK: [[T16:%[^ ]*]] = phi i1 [ false, {{%[^ ]*}} ], [ [[T11]], {{%[^ ]*}} ]
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%x = call i1 @llvm.bitset.test(i8* %pi8, metadata !"bitset3")
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; CHECK: ret i1 [[T16]]
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ret i1 %x
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}
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; CHECK-NOT: !llvm.bitsets
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