mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-30 16:17:05 +00:00
f34dc428fa
It will now only convert the arguments / return value and call the underlying function if the types are able to be bitcasted. This avoids using fp<->int conversions that would occur before. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187444 91177308-0d34-0410-b5e6-96231b3b80d8
230 lines
8.2 KiB
LLVM
230 lines
8.2 KiB
LLVM
; RUN: opt -S -instcombine -o - %s | FileCheck %s
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target datalayout = "e-p:32:32:32-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v16:16:16-v24:32:32-v32:32:32-v64:64:64-v128:128:128-a0:0:64"
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; Cases that should be bitcast
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; Test cast between scalars with same bit sizes
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@alias_i32_to_f32 = alias bitcast (i32 (i32)* @func_i32 to float (float)*)
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; Test cast between vectors with same number of elements and bit sizes
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@alias_v2i32_to_v2f32 = alias bitcast (<2 x i32> (<2 x i32>)* @func_v2i32 to <2 x float> (<2 x float>)*)
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; Test cast from vector to scalar with same number of bits
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@alias_v2f32_to_i64 = alias bitcast (i64 (i64)* @func_i64 to <2 x float> (<2 x float>)*)
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; Test cast from scalar to vector with same number of bits
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@alias_i64_to_v2f32 = alias bitcast (<2 x float> (<2 x float>)* @func_v2f32 to i64 (i64)*)
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; Test cast between vectors of pointers
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@alias_v2i32p_to_v2i64p = alias bitcast (<2 x i32*> (<2 x i32*>)* @func_v2i32p to <2 x i64*> (<2 x i64*>)*)
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; Cases that should be invalid and unchanged
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; Test cast between scalars with different bit sizes
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@alias_i64_to_f32 = alias bitcast (i64 (i64)* @func_i64 to float (float)*)
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; Test cast between vectors with different bit sizes but the
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; same number of elements
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@alias_v2i64_to_v2f32 = alias bitcast (<2 x i64> (<2 x i64>)* @func_v2i64 to <2 x float> (<2 x float>)*)
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; Test cast between vectors with same number of bits and different
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; numbers of elements
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@alias_v2i32_to_v4f32 = alias bitcast (<2 x i32> (<2 x i32>)* @func_v2i32 to <4 x float> (<4 x float>)*)
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; Test cast between scalar and vector with different number of bits
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@alias_i64_to_v4f32 = alias bitcast (<4 x float> (<4 x float>)* @func_v4f32 to i64 (i64)*)
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; Test cast between vector and scalar with different number of bits
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@alias_v4f32_to_i64 = alias bitcast (i64 (i64)* @func_i64 to <4 x float> (<4 x float>)*)
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; Test cast from scalar to vector of pointers with same number of bits
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; We don't know the pointer size at this point, so this can't be done
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@alias_i64_to_v2i32p = alias bitcast (<2 x i32*> (<2 x i32*>)* @func_v2i32p to i64 (i64)*)
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; Test cast between vector of pointers and scalar with different number of bits
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@alias_v4i32p_to_i64 = alias bitcast (i64 (i64)* @func_i64 to <4 x i32*> (<4 x i32*>)*)
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define internal <2 x i32> @func_v2i32(<2 x i32> %v) noinline nounwind {
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entry:
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ret <2 x i32> %v
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}
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define internal <2 x float> @func_v2f32(<2 x float> %v) noinline nounwind {
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entry:
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ret <2 x float> %v
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}
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define internal <4 x float> @func_v4f32(<4 x float> %v) noinline nounwind {
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entry:
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ret <4 x float> %v
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}
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define internal i32 @func_i32(i32 %v) noinline nounwind {
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entry:
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ret i32 %v
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}
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define internal i64 @func_i64(i64 %v) noinline nounwind {
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entry:
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ret i64 %v
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}
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define internal <2 x i64> @func_v2i64(<2 x i64> %v) noinline nounwind {
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entry:
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ret <2 x i64> %v
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}
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define internal <2 x i32*> @func_v2i32p(<2 x i32*> %v) noinline nounwind {
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entry:
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ret <2 x i32*> %v
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}
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; Valid cases, only bitcast for argument / return type and call underlying function
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; Sizes match, should only bitcast
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define void @bitcast_alias_scalar(float* noalias %source, float* noalias %dest) nounwind {
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entry:
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; CHECK-LABEL: @bitcast_alias_scalar
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; CHECK: bitcast float %tmp to i32
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; CHECK-NOT: fptoui
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; CHECK-NOT: uitofp
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; CHECK: bitcast i32 %call to float
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%tmp = load float* %source, align 8
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%call = call float @alias_i32_to_f32(float %tmp) nounwind
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store float %call, float* %dest, align 8
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ret void
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}
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; Sizes match, should only bitcast
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define void @bitcast_alias_vector(<2 x float>* noalias %source, <2 x float>* noalias %dest) nounwind {
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entry:
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; CHECK-LABEL: @bitcast_alias_vector
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; CHECK: bitcast <2 x float> %tmp to <2 x i32>
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; CHECK-NOT: fptoui
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; CHECK-NOT: uitofp
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; CHECK: bitcast <2 x i32> %call to <2 x float>
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%tmp = load <2 x float>* %source, align 8
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%call = call <2 x float> @alias_v2i32_to_v2f32(<2 x float> %tmp) nounwind
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store <2 x float> %call, <2 x float>* %dest, align 8
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ret void
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}
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; Sizes match, should only bitcast
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define void @bitcast_alias_vector_scalar_same_size(<2 x float>* noalias %source, <2 x float>* noalias %dest) nounwind {
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entry:
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; CHECK-LABEL: @bitcast_alias_vector_scalar_same_size
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; CHECK: bitcast <2 x float> %tmp to i64
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; CHECK: %call = call i64 @func_i64
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; CHECK: bitcast i64 %call to <2 x float>
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%tmp = load <2 x float>* %source, align 8
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%call = call <2 x float> @alias_v2f32_to_i64(<2 x float> %tmp) nounwind
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store <2 x float> %call, <2 x float>* %dest, align 8
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ret void
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}
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define void @bitcast_alias_scalar_vector_same_size(i64* noalias %source, i64* noalias %dest) nounwind {
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entry:
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; CHECK-LABEL: @bitcast_alias_scalar_vector_same_size
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; CHECK: bitcast i64 %tmp to <2 x float>
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; CHECK: call <2 x float> @func_v2f32
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; CHECK: bitcast <2 x float> %call to i64
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%tmp = load i64* %source, align 8
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%call = call i64 @alias_i64_to_v2f32(i64 %tmp) nounwind
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store i64 %call, i64* %dest, align 8
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ret void
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}
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define void @bitcast_alias_vector_ptrs_same_size(<2 x i64*>* noalias %source, <2 x i64*>* noalias %dest) nounwind {
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entry:
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; CHECK-LABEL: @bitcast_alias_vector_ptrs_same_size
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; CHECK: bitcast <2 x i64*> %tmp to <2 x i32*>
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; CHECK: call <2 x i32*> @func_v2i32p
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; CHECK: bitcast <2 x i32*> %call to <2 x i64*>
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%tmp = load <2 x i64*>* %source, align 8
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%call = call <2 x i64*> @alias_v2i32p_to_v2i64p(<2 x i64*> %tmp) nounwind
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store <2 x i64*> %call, <2 x i64*>* %dest, align 8
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ret void
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}
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; Invalid cases:
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define void @bitcast_alias_mismatch_scalar_size(float* noalias %source, float* noalias %dest) nounwind {
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entry:
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; CHECK-LABEL: @bitcast_alias_mismatch_scalar_size
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; CHECK-NOT: fptoui
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; CHECK: @alias_i64_to_f32
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; CHECK-NOT: uitofp
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%tmp = load float* %source, align 8
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%call = call float @alias_i64_to_f32(float %tmp) nounwind
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store float %call, float* %dest, align 8
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ret void
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}
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define void @bitcast_alias_mismatch_vector_element_and_bit_size(<2 x float>* noalias %source, <2 x float>* noalias %dest) nounwind {
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entry:
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; CHECK-LABEL: @bitcast_alias_mismatch_vector_element_and_bit_size
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; CHECK-NOT: fptoui <2 x float> %tmp to <2 x i64>
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; CHECK: @alias_v2i64_to_v2f32
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; CHECK-NOT: uitofp <2 x i64> %call to <2 x float>
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%tmp = load <2 x float>* %source, align 8
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%call = call <2 x float> @alias_v2i64_to_v2f32(<2 x float> %tmp) nounwind
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store <2 x float> %call, <2 x float>* %dest, align 8
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ret void
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}
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define void @bitcast_alias_vector_mismatched_number_elements(<4 x float>* noalias %source, <4 x float>* noalias %dest) nounwind {
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entry:
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; CHECK-LABEL: @bitcast_alias_vector_mismatched_number_elements
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; CHECK: %call = call <4 x float> @alias_v2i32_to_v4f32
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%tmp = load <4 x float>* %source, align 8
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%call = call <4 x float> @alias_v2i32_to_v4f32(<4 x float> %tmp) nounwind
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store <4 x float> %call, <4 x float>* %dest, align 8
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ret void
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}
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define void @bitcast_alias_vector_scalar_mismatched_bit_size(<4 x float>* noalias %source, <4 x float>* noalias %dest) nounwind {
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entry:
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; CHECK-LABEL: @bitcast_alias_vector_scalar_mismatched_bit_size
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; CHECK: %call = call <4 x float> @alias_v4f32_to_i64
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%tmp = load <4 x float>* %source, align 8
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%call = call <4 x float> @alias_v4f32_to_i64(<4 x float> %tmp) nounwind
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store <4 x float> %call, <4 x float>* %dest, align 8
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ret void
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}
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define void @bitcast_alias_vector_ptrs_scalar_mismatched_bit_size(<4 x i32*>* noalias %source, <4 x i32*>* noalias %dest) nounwind {
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entry:
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; CHECK-LABEL: @bitcast_alias_vector_ptrs_scalar_mismatched_bit_size
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; CHECK: @alias_v4i32p_to_i64
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%tmp = load <4 x i32*>* %source, align 8
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%call = call <4 x i32*> @alias_v4i32p_to_i64(<4 x i32*> %tmp) nounwind
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store <4 x i32*> %call, <4 x i32*>* %dest, align 8
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ret void
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}
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define void @bitcast_alias_scalar_vector_ptrs_same_size(i64* noalias %source, i64* noalias %dest) nounwind {
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entry:
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; CHECK-LABEL: @bitcast_alias_scalar_vector_ptrs_same_size
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; CHECK: @alias_i64_to_v2i32p
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%tmp = load i64* %source, align 8
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%call = call i64 @alias_i64_to_v2i32p(i64 %tmp) nounwind
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store i64 %call, i64* %dest, align 8
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ret void
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}
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define void @bitcast_alias_scalar_vector_mismatched_bit_size(i64* noalias %source, i64* noalias %dest) nounwind {
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entry:
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; CHECK-LABEL: @bitcast_alias_scalar_vector_mismatched_bit_size
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; CHECK: call i64 @alias_i64_to_v4f32
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%tmp = load i64* %source, align 8
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%call = call i64 @alias_i64_to_v4f32(i64 %tmp) nounwind
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store i64 %call, i64* %dest, align 8
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ret void
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}
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