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42e79d9771
This allows the user to set the size of the scalable vector so they can be used in structs and as the type of global variables. This works by representing the type as a fixed vector instead of a scalable vector in IR. Conversions to and from scalable vectors are made where necessary like function arguments/returns and intrinsics. This features has been requested here https://github.com/riscv-non-isa/rvv-intrinsic-doc/issues/176 I know arm_sve_vector_bits is used by the Eigen library so this could be used to port Eigen to RVV. This patch adds a new preprocessor define `__riscv_v_fixed_vlen` that is set when -mrvv_vector_bits is passed on the command line. The code is largely based on the AArch64 code. A lot of code was copy/pasted and then modiied to RVV. There may be some opportunities for sharing. This first patch only supports the LMUL=1 types. Additional changes will be needed to support other LMULs. I have also not supported mask vectors. Differential Revision: https://reviews.llvm.org/D145088
79 lines
3.9 KiB
C
79 lines
3.9 KiB
C
// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -mvscale-min=8 -mvscale-max=8 -flax-vector-conversions=none -ffreestanding -fsyntax-only -verify=lax-vector-none %s
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -mvscale-min=8 -mvscale-max=8 -flax-vector-conversions=integer -ffreestanding -fsyntax-only -verify=lax-vector-integer %s
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// RUN: %clang_cc1 -triple riscv64-none-linux-gnu -target-feature +f -target-feature +d -target-feature +zve64d -mvscale-min=8 -mvscale-max=8 -flax-vector-conversions=all -ffreestanding -fsyntax-only -verify=lax-vector-all %s
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// lax-vector-all-no-diagnostics
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// REQUIRES: riscv-registered-target
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#define RVV_FIXED_ATTR __attribute__((riscv_rvv_vector_bits(__riscv_v_fixed_vlen)))
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#define GNU_FIXED_ATTR __attribute__((vector_size(__riscv_v_fixed_vlen / 8)))
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typedef __rvv_int8m1_t vint8m1_t;
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typedef __rvv_uint8m1_t vuint8m1_t;
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typedef __rvv_int16m1_t vint16m1_t;
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typedef __rvv_uint16m1_t vuint16m1_t;
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typedef __rvv_int32m1_t vint32m1_t;
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typedef __rvv_uint32m1_t vuint32m1_t;
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typedef __rvv_int64m1_t vint64m1_t;
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typedef __rvv_uint64m1_t vuint64m1_t;
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typedef __rvv_float32m1_t vfloat32m1_t;
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typedef __rvv_float64m1_t vfloat64m1_t;
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typedef vfloat32m1_t rvv_fixed_float32m1_t RVV_FIXED_ATTR;
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typedef vint32m1_t rvv_fixed_int32m1_t RVV_FIXED_ATTR;
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typedef float gnu_fixed_float32m1_t GNU_FIXED_ATTR;
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typedef int gnu_fixed_int32m1_t GNU_FIXED_ATTR;
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void rvv_allowed_with_integer_lax_conversions() {
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rvv_fixed_int32m1_t fi32;
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vint64m1_t si64;
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// The implicit cast here should fail if -flax-vector-conversions=none, but pass if
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// -flax-vector-conversions={integer,all}.
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fi32 = si64;
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// lax-vector-none-error@-1 {{assigning to 'rvv_fixed_int32m1_t' (vector of 16 'int' values) from incompatible type}}
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si64 = fi32;
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// lax-vector-none-error@-1 {{assigning to 'vint64m1_t' (aka '__rvv_int64m1_t') from incompatible type}}
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}
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void rvv_allowed_with_all_lax_conversions() {
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rvv_fixed_float32m1_t ff32;
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vfloat64m1_t sf64;
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// The implicit cast here should fail if -flax-vector-conversions={none,integer}, but pass if
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// -flax-vector-conversions=all.
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ff32 = sf64;
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// lax-vector-none-error@-1 {{assigning to 'rvv_fixed_float32m1_t' (vector of 16 'float' values) from incompatible type}}
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// lax-vector-integer-error@-2 {{assigning to 'rvv_fixed_float32m1_t' (vector of 16 'float' values) from incompatible type}}
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sf64 = ff32;
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// lax-vector-none-error@-1 {{assigning to 'vfloat64m1_t' (aka '__rvv_float64m1_t') from incompatible type}}
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// lax-vector-integer-error@-2 {{assigning to 'vfloat64m1_t' (aka '__rvv_float64m1_t') from incompatible type}}
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}
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void gnu_allowed_with_integer_lax_conversions() {
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gnu_fixed_int32m1_t fi32;
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vint64m1_t si64;
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// The implicit cast here should fail if -flax-vector-conversions=none, but pass if
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// -flax-vector-conversions={integer,all}.
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fi32 = si64;
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// lax-vector-none-error@-1 {{assigning to 'gnu_fixed_int32m1_t' (vector of 16 'int' values) from incompatible type}}
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si64 = fi32;
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// lax-vector-none-error@-1 {{assigning to 'vint64m1_t' (aka '__rvv_int64m1_t') from incompatible type}}
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}
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void gnu_allowed_with_all_lax_conversions() {
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gnu_fixed_float32m1_t ff32;
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vfloat64m1_t sf64;
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// The implicit cast here should fail if -flax-vector-conversions={none,integer}, but pass if
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// -flax-vector-conversions=all.
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ff32 = sf64;
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// lax-vector-none-error@-1 {{assigning to 'gnu_fixed_float32m1_t' (vector of 16 'float' values) from incompatible type}}
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// lax-vector-integer-error@-2 {{assigning to 'gnu_fixed_float32m1_t' (vector of 16 'float' values) from incompatible type}}
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sf64 = ff32;
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// lax-vector-none-error@-1 {{assigning to 'vfloat64m1_t' (aka '__rvv_float64m1_t') from incompatible type}}
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// lax-vector-integer-error@-2 {{assigning to 'vfloat64m1_t' (aka '__rvv_float64m1_t') from incompatible type}}
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}
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