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llvm-project/clang/test/Frontend/fixed_point_declarations.c

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Fixed test in prior build where FileCheck tried to match against `common` when declaring a global variable when we primarily care about the value assigned in the test. llvm-svn: 335159
2018-06-21 03:34:05 +08:00
// RUN: %clang -ffixed-point -S -emit-llvm %s -o - --target=x86_64-linux | FileCheck %s
[Fixed Point Arithmetic] Fixed Point Precision Bits and Fixed Point Literals This diff includes the logic for setting the precision bits for each primary fixed point type in the target info and logic for initializing a fixed point literal. Fixed point literals are declared using the suffixes ``` hr: short _Fract uhr: unsigned short _Fract r: _Fract ur: unsigned _Fract lr: long _Fract ulr: unsigned long _Fract hk: short _Accum uhk: unsigned short _Accum k: _Accum uk: unsigned _Accum ``` Errors are also thrown for illegal literal values ``` unsigned short _Accum u_short_accum = 256.0uhk; // expected-error{{the integral part of this literal is too large for this unsigned _Accum type}} ``` Differential Revision: https://reviews.llvm.org/D46915 llvm-svn: 335148
2018-06-21 01:19:40 +08:00
// Primary fixed point types
signed short _Accum s_short_accum; // CHECK-DAG: @s_short_accum = {{.*}}global i16 0, align 2
signed _Accum s_accum; // CHECK-DAG: @s_accum = {{.*}}global i32 0, align 4
signed long _Accum s_long_accum; // CHECK-DAG: @s_long_accum = {{.*}}global i64 0, align 8
unsigned short _Accum u_short_accum; // CHECK-DAG: @u_short_accum = {{.*}}global i16 0, align 2
unsigned _Accum u_accum; // CHECK-DAG: @u_accum = {{.*}}global i32 0, align 4
unsigned long _Accum u_long_accum; // CHECK-DAG: @u_long_accum = {{.*}}global i64 0, align 8
signed short _Fract s_short_fract; // CHECK-DAG: @s_short_fract = {{.*}}global i8 0, align 1
signed _Fract s_fract; // CHECK-DAG: @s_fract = {{.*}}global i16 0, align 2
signed long _Fract s_long_fract; // CHECK-DAG: @s_long_fract = {{.*}}global i32 0, align 4
unsigned short _Fract u_short_fract; // CHECK-DAG: @u_short_fract = {{.*}}global i8 0, align 1
unsigned _Fract u_fract; // CHECK-DAG: @u_fract = {{.*}}global i16 0, align 2
unsigned long _Fract u_long_fract; // CHECK-DAG: @u_long_fract = {{.*}}global i32 0, align 4
// Aliased
short _Accum short_accum; // CHECK-DAG: @short_accum = {{.*}}global i16 0, align 2
_Accum accum; // CHECK-DAG: @accum = {{.*}}global i32 0, align 4
long _Accum long_accum; // CHECK-DAG: @long_accum = {{.*}}global i64 0, align 8
short _Fract short_fract; // CHECK-DAG: @short_fract = {{.*}}global i8 0, align 1
_Fract fract; // CHECK-DAG: @fract = {{.*}}global i16 0, align 2
long _Fract long_fract; // CHECK-DAG: @long_fract = {{.*}}global i32 0, align 4
// Primary saturated
_Sat signed short _Accum sat_s_short_accum; // CHECK-DAG: @sat_s_short_accum = {{.*}}global i16 0, align 2
_Sat signed _Accum sat_s_accum; // CHECK-DAG: @sat_s_accum = {{.*}}global i32 0, align 4
_Sat signed long _Accum sat_s_long_accum; // CHECK-DAG: @sat_s_long_accum = {{.*}}global i64 0, align 8
_Sat unsigned short _Accum sat_u_short_accum; // CHECK-DAG: @sat_u_short_accum = {{.*}}global i16 0, align 2
_Sat unsigned _Accum sat_u_accum; // CHECK-DAG: @sat_u_accum = {{.*}}global i32 0, align 4
_Sat unsigned long _Accum sat_u_long_accum; // CHECK-DAG: @sat_u_long_accum = {{.*}}global i64 0, align 8
_Sat signed short _Fract sat_s_short_fract; // CHECK-DAG: @sat_s_short_fract = {{.*}}global i8 0, align 1
_Sat signed _Fract sat_s_fract; // CHECK-DAG: @sat_s_fract = {{.*}}global i16 0, align 2
_Sat signed long _Fract sat_s_long_fract; // CHECK-DAG: @sat_s_long_fract = {{.*}}global i32 0, align 4
_Sat unsigned short _Fract sat_u_short_fract; // CHECK-DAG: @sat_u_short_fract = {{.*}}global i8 0, align 1
_Sat unsigned _Fract sat_u_fract; // CHECK-DAG: @sat_u_fract = {{.*}}global i16 0, align 2
_Sat unsigned long _Fract sat_u_long_fract; // CHECK-DAG: @sat_u_long_fract = {{.*}}global i32 0, align 4
// Aliased saturated
_Sat short _Accum sat_short_accum; // CHECK-DAG: @sat_short_accum = {{.*}}global i16 0, align 2
_Sat _Accum sat_accum; // CHECK-DAG: @sat_accum = {{.*}}global i32 0, align 4
_Sat long _Accum sat_long_accum; // CHECK-DAG: @sat_long_accum = {{.*}}global i64 0, align 8
_Sat short _Fract sat_short_fract; // CHECK-DAG: @sat_short_fract = {{.*}}global i8 0, align 1
_Sat _Fract sat_fract; // CHECK-DAG: @sat_fract = {{.*}}global i16 0, align 2
_Sat long _Fract sat_long_fract; // CHECK-DAG: @sat_long_fract = {{.*}}global i32 0, align 4
/* Fixed point literals */
short _Accum short_accum_literal = 2.5hk; // CHECK-DAG: @short_accum_literal = {{.*}}global i16 320, align 2
_Accum accum_literal = 2.5k; // CHECK-DAG: @accum_literal = {{.*}}global i32 81920, align 4
long _Accum long_accum_literal = 2.5lk; // CHECK-DAG: @long_accum_literal = {{.*}}global i64 5368709120, align 8
short _Fract short_fract_literal = 0.5hr; // CHECK-DAG: @short_fract_literal = {{.*}}global i8 64, align 1
_Fract fract_literal = 0.5r; // CHECK-DAG: @fract_literal = {{.*}}global i16 16384, align 2
long _Fract long_fract_literal = 0.5lr; // CHECK-DAG: @long_fract_literal = {{.*}}global i32 1073741824, align 4
unsigned short _Accum u_short_accum_literal = 2.5uhk; // CHECK-DAG: @u_short_accum_literal = {{.*}}global i16 640, align 2
unsigned _Accum u_accum_literal = 2.5uk; // CHECK-DAG: @u_accum_literal = {{.*}}global i32 163840, align 4
unsigned long _Accum u_long_accum_literal = 2.5ulk; // CHECK-DAG: @u_long_accum_literal = {{.*}}global i64 10737418240, align 8
unsigned short _Fract u_short_fract_literal = 0.5uhr; // CHECK-DAG: @u_short_fract_literal = {{.*}}global i8 -128, align 1
unsigned _Fract u_fract_literal = 0.5ur; // CHECK-DAG: @u_fract_literal = {{.*}}global i16 -32768, align 2
unsigned long _Fract u_long_fract_literal = 0.5ulr; // CHECK-DAG: @u_long_fract_literal = {{.*}}global i32 -2147483648, align 4
// Max literal values
short _Accum short_accum_max = 255.9999999999999999hk; // CHECK-DAG: @short_accum_max = {{.*}}global i16 32767, align 2
_Accum accum_max = 65535.9999999999999999k; // CHECK-DAG: @accum_max = {{.*}}global i32 2147483647, align 4
long _Accum long_accum_max = 4294967295.9999999999999999lk; // CHECK-DAG: @long_accum_max = {{.*}}global i64 9223372036854775807, align 8
unsigned short _Accum u_short_accum_max = 255.9999999999999999uhk; // CHECK-DAG: @u_short_accum_max = {{.*}}global i16 -1, align 2
unsigned _Accum u_accum_max = 65535.9999999999999999uk; // CHECK-DAG: @u_accum_max = {{.*}}global i32 -1, align 4
unsigned long _Accum u_long_accum_max = 4294967295.9999999999999999ulk; // CHECK-DAG: @u_long_accum_max = {{.*}}global i64 -1, align 8
short _Fract short_fract_max = 0.9999999999999999hr; // CHECK-DAG: @short_fract_max = {{.*}}global i8 127, align 1
_Fract fract_max = 0.9999999999999999r; // CHECK-DAG: @fract_max = {{.*}}global i16 32767, align 2
long _Fract long_fract_max = 0.9999999999999999lr; // CHECK-DAG: @long_fract_max = {{.*}}global i32 2147483647, align 4
unsigned short _Fract u_short_fract_max = 0.9999999999999999uhr; // CHECK-DAG: @u_short_fract_max = {{.*}}global i8 -1, align 1
unsigned _Fract u_fract_max = 0.9999999999999999ur; // CHECK-DAG: @u_fract_max = {{.*}}global i16 -1, align 2
unsigned long _Fract u_long_fract_max = 0.9999999999999999ulr; // CHECK-DAG: @u_long_fract_max = {{.*}}global i32 -1, align 4
// Fracts may be exactly one but evaluate to the Fract max
short _Fract short_fract_one = 1.0hr; // CHECK-DAG: @short_fract_one = {{.*}}global i8 127, align 1
_Fract fract_one = 1.0r; // CHECK-DAG: @fract_one = {{.*}}global i16 32767, align 2
long _Fract long_fract_one = 1.0lr; // CHECK-DAG: @long_fract_one = {{.*}}global i32 2147483647, align 4
unsigned short _Fract u_short_fract_one = 1.0uhr; // CHECK-DAG: @u_short_fract_one = {{.*}}global i8 -1, align 1
unsigned _Fract u_fract_one = 1.0ur; // CHECK-DAG: @u_fract_one = {{.*}}global i16 -1, align 2
unsigned long _Fract u_long_fract_one = 1.0ulr; // CHECK-DAG: @u_long_fract_one = {{.*}}global i32 -1, align 4
short _Fract short_fract_exp_one = 0.1e1hr; // CHECK-DAG: @short_fract_exp_one = {{.*}}global i8 127, align 1
_Fract fract_exp_one = 0.1e1r; // CHECK-DAG: @fract_exp_one = {{.*}}global i16 32767, align 2
long _Fract long_fract_exp_one = 0.1e1lr; // CHECK-DAG: @long_fract_exp_one = {{.*}}global i32 2147483647, align 4
unsigned short _Fract u_short_fract_exp_one = 0.1e1uhr; // CHECK-DAG: @u_short_fract_exp_one = {{.*}}global i8 -1, align 1
unsigned _Fract u_fract_exp_one = 0.1e1ur; // CHECK-DAG: @u_fract_exp_one = {{.*}}global i16 -1, align 2
unsigned long _Fract u_long_fract_exp_one = 0.1e1ulr; // CHECK-DAG: @u_long_fract_exp_one = {{.*}}global i32 -1, align 4
short _Fract short_fract_hex_exp_one = 0x0.8p1hr; // CHECK-DAG: @short_fract_hex_exp_one = {{.*}}global i8 127, align 1
_Fract fract_hex_exp_one = 0x0.8p1r; // CHECK-DAG: @fract_hex_exp_one = {{.*}}global i16 32767, align 2
long _Fract long_fract_hex_exp_one = 0x0.8p1lr; // CHECK-DAG: @long_fract_hex_exp_one = {{.*}}global i32 2147483647, align 4
unsigned short _Fract u_short_fract_hex_exp_one = 0x0.8p1uhr; // CHECK-DAG: @u_short_fract_hex_exp_one = {{.*}}global i8 -1, align 1
unsigned _Fract u_fract_hex_exp_one = 0x0.8p1ur; // CHECK-DAG: @u_fract_hex_exp_one = {{.*}}global i16 -1, align 2
unsigned long _Fract u_long_fract_hex_exp_one = 0x0.8p1ulr; // CHECK-DAG: @u_long_fract_hex_exp_one = {{.*}}global i32 -1, align 4
// Expsilon values
short _Accum short_accum_eps = 0x1p-7hk; // CHECK-DAG: @short_accum_eps = {{.*}}global i16 1, align 2
_Accum accum_eps = 0x1p-15k; // CHECK-DAG: @accum_eps = {{.*}}global i32 1, align 4
long _Accum long_accum_eps = 0x1p-31lk; // CHECK-DAG: @long_accum_eps = {{.*}}global i64 1, align 8
unsigned short _Accum u_short_accum_eps = 0x1p-8uhk; // CHECK-DAG: @u_short_accum_eps = {{.*}}global i16 1, align 2
unsigned _Accum u_accum_eps = 0x1p-16uk; // CHECK-DAG: @u_accum_eps = {{.*}}global i32 1, align 4
unsigned long _Accum u_long_accum_eps = 0x1p-32ulk; // CHECK-DAG: @u_long_accum_eps = {{.*}}global i64 1, align 8
short _Fract short_fract_eps = 0x1p-7hr; // CHECK-DAG: @short_fract_eps = {{.*}}global i8 1, align 1
_Fract fract_eps = 0x1p-15r; // CHECK-DAG: @fract_eps = {{.*}}global i16 1, align 2
long _Fract long_fract_eps = 0x1p-31lr; // CHECK-DAG: @long_fract_eps = {{.*}}global i32 1, align 4
unsigned short _Fract u_short_fract_eps = 0x1p-8uhr; // CHECK-DAG: @u_short_fract_eps = {{.*}}global i8 1, align 1
unsigned _Fract u_fract_eps = 0x1p-16ur; // CHECK-DAG: @u_fract_eps = {{.*}}global i16 1, align 2
unsigned long _Fract u_long_fract_eps = 0x1p-32ulr; // CHECK-DAG: @u_long_fract_eps = {{.*}}global i32 1, align 4
[Fixed Point Arithmetic] Fixed Point Constant This patch proposes an abstract type that represents fixed point numbers, similar to APInt or APSInt that was discussed in https://reviews.llvm.org/D48456#inline-425585. This type holds a value, scale, and saturation and is meant to perform intermediate calculations on constant fixed point values. Currently this class is used as a way for handling the conversions between fixed point numbers with different sizes and radixes. For example, if I'm casting from a signed _Accum to a saturated unsigned short _Accum, I will need to check the value of the signed _Accum to see if it fits into the short _Accum which involves getting and comparing against the max/min values of the short _Accum. The FixedPointNumber class currently handles the radix shifting and extension when converting to a signed _Accum. Differential Revision: https://reviews.llvm.org/D48661 llvm-svn: 339028
2018-08-07 00:42:37 +08:00
// Zero
short _Accum short_accum_zero = 0.0hk; // CHECK-DAG: @short_accum_zero = {{.*}}global i16 0, align 2
_Accum accum_zero = 0.0k; // CHECK-DAG: @accum_zero = {{.*}}global i32 0, align 4
long _Accum long_accum_zero = 0.0lk; // CHECK-DAG: @long_accum_zero = {{.*}}global i64 0, align 8
unsigned short _Accum u_short_accum_zero = 0.0uhk; // CHECK-DAG: @u_short_accum_zero = {{.*}}global i16 0, align 2
unsigned _Accum u_accum_zero = 0.0uk; // CHECK-DAG: @u_accum_zero = {{.*}}global i32 0, align 4
unsigned long _Accum u_long_accum_zero = 0.0ulk; // CHECK-DAG: @u_long_accum_zero = {{.*}}global i64 0, align 8
short _Fract short_fract_zero = 0.0hr; // CHECK-DAG: @short_fract_zero = {{.*}}global i8 0, align 1
_Fract fract_zero = 0.0r; // CHECK-DAG: @fract_zero = {{.*}}global i16 0, align 2
long _Fract long_fract_zero = 0.0lr; // CHECK-DAG: @long_fract_zero = {{.*}}global i32 0, align 4
unsigned short _Fract u_short_fract_zero = 0.0uhr; // CHECK-DAG: @u_short_fract_zero = {{.*}}global i8 0, align 1
unsigned _Fract u_fract_zero = 0.0ur; // CHECK-DAG: @u_fract_zero = {{.*}}global i16 0, align 2
unsigned long _Fract u_long_fract_zero = 0.0ulr; // CHECK-DAG: @u_long_fract_zero = {{.*}}global i32 0, align 4