| // RUN: %clang_cc1 -ffixed-point -triple x86_64-unknown-linux-gnu -S -emit-llvm %s -o - | FileCheck %s --check-prefixes=CHECK,SIGNED |
| // RUN: %clang_cc1 -ffixed-point -triple x86_64-unknown-linux-gnu -S -emit-llvm %s -o - -fpadding-on-unsigned-fixed-point | FileCheck %s --check-prefixes=CHECK,UNSIGNED |
| |
| // Between different fixed point types |
| short _Accum sa_const = 2.5hk; // CHECK-DAG: @sa_const = {{.*}}global i16 320, align 2 |
| _Accum a_const = 2.5hk; // CHECK-DAG: @a_const = {{.*}}global i32 81920, align 4 |
| short _Accum sa_const2 = 2.5k; // CHECK-DAG: @sa_const2 = {{.*}}global i16 320, align 2 |
| |
| short _Accum sa_from_f_const = 0.5r; // CHECK-DAG: sa_from_f_const = {{.*}}global i16 64, align 2 |
| _Fract f_from_sa_const = 0.5hk; // CHECK-DAG: f_from_sa_const = {{.*}}global i16 16384, align 2 |
| |
| unsigned short _Accum usa_const = 2.5uk; |
| unsigned _Accum ua_const = 2.5uhk; |
| // SIGNED-DAG: @usa_const = {{.*}}global i16 640, align 2 |
| // SIGNED-DAG: @ua_const = {{.*}}global i32 163840, align 4 |
| // UNSIGNED-DAG: @usa_const = {{.*}}global i16 320, align 2 |
| // UNSIGNED-DAG: @ua_const = {{.*}}global i32 81920, align 4 |
| |
| // FixedPoint to integer |
| int i_const = -128.0hk; // CHECK-DAG: @i_const = {{.*}}global i32 -128, align 4 |
| int i_const2 = 128.0hk; // CHECK-DAG: @i_const2 = {{.*}}global i32 128, align 4 |
| int i_const3 = -128.0k; // CHECK-DAG: @i_const3 = {{.*}}global i32 -128, align 4 |
| int i_const4 = 128.0k; // CHECK-DAG: @i_const4 = {{.*}}global i32 128, align 4 |
| short s_const = -128.0k; // CHECK-DAG: @s_const = {{.*}}global i16 -128, align 2 |
| short s_const2 = 128.0k; // CHECK-DAG: @s_const2 = {{.*}}global i16 128, align 2 |
| |
| // Integer to fixed point |
| short _Accum sa_const5 = 2; // CHECK-DAG: @sa_const5 = {{.*}}global i16 256, align 2 |
| short _Accum sa_const6 = -2; // CHECK-DAG: @sa_const6 = {{.*}}global i16 -256, align 2 |
| short _Accum sa_const7 = -256; // CHECK-DAG: @sa_const7 = {{.*}}global i16 -32768, align 2 |
| |
| // Signedness |
| unsigned short _Accum usa_const2 = 2.5hk; |
| // SIGNED-DAG: @usa_const2 = {{.*}}global i16 640, align 2 |
| // UNSIGNED-DAG: @usa_const2 = {{.*}}global i16 320, align 2 |
| short _Accum sa_const3 = 2.5hk; // CHECK-DAG: @sa_const3 = {{.*}}global i16 320, align 2 |
| |
| int i_const5 = 128.0uhk; |
| unsigned int ui_const = 128.0hk; |
| // CHECK-DAG: @i_const5 = {{.*}}global i32 128, align 4 |
| // CHECK-DAG: @ui_const = {{.*}}global i32 128, align 4 |
| |
| short _Accum sa_const9 = 2u; // CHECK-DAG: @sa_const9 = {{.*}}global i16 256, align 2 |
| unsigned short _Accum usa_const3 = 2; |
| // SIGNED-DAG: @usa_const3 = {{.*}}global i16 512, align 2 |
| // UNSIGNED-DAG: @usa_const3 = {{.*}}global i16 256, align 2 |
| |
| // Overflow (this is undefined but allowed) |
| short _Accum sa_const4 = 256.0k; |
| unsigned int ui_const2 = -2.5hk; |
| short _Accum sa_const8 = 256; |
| unsigned short _Accum usa_const4 = -2; |
| |
| // Saturation |
| _Sat short _Accum sat_sa_const = 2.5hk; // CHECK-DAG: @sat_sa_const = {{.*}}global i16 320, align 2 |
| _Sat short _Accum sat_sa_const2 = 256.0k; // CHECK-DAG: @sat_sa_const2 = {{.*}}global i16 32767, align 2 |
| _Sat unsigned short _Accum sat_usa_const = -1.0hk; |
| // CHECK-DAG: @sat_usa_const = {{.*}}global i16 0, align 2 |
| _Sat unsigned short _Accum sat_usa_const2 = 256.0k; |
| // SIGNED-DAG: @sat_usa_const2 = {{.*}}global i16 -1, align 2 |
| // UNSIGNED-DAG: @sat_usa_const2 = {{.*}}global i16 32767, align 2 |
| |
| _Sat short _Accum sat_sa_const3 = 256; // CHECK-DAG: @sat_sa_const3 = {{.*}}global i16 32767, align 2 |
| _Sat short _Accum sat_sa_const4 = -257; // CHECK-DAG: @sat_sa_const4 = {{.*}}global i16 -32768, align 2 |
| _Sat unsigned short _Accum sat_usa_const3 = -1; |
| // CHECK-DAG: @sat_usa_const3 = {{.*}}global i16 0, align 2 |
| _Sat unsigned short _Accum sat_usa_const4 = 256; |
| // SIGNED-DAG: @sat_usa_const4 = {{.*}}global i16 -1, align 2 |
| // UNSIGNED-DAG: @sat_usa_const4 = {{.*}}global i16 32767, align 2 |
| |
| void TestFixedPointCastSameType() { |
| _Accum a = 2.5k; |
| _Accum a2 = a; |
| // CHECK: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // CHECK-NEXT: store i32 [[ACCUM]], i32* %a2, align 4 |
| |
| a2 = (_Accum)a; |
| // CHECK: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // CHECK-NEXT: store i32 [[ACCUM]], i32* %a2, align 4 |
| } |
| |
| void TestFixedPointCastDown() { |
| long _Accum la = 2.5lk; |
| _Accum a = la; |
| // CHECK: [[LACCUM:%[0-9a-z]+]] = load i64, i64* %la, align 8 |
| // CHECK-NEXT: [[ACCUM_AS_I64:%[0-9a-z]+]] = ashr i64 [[LACCUM]], 16 |
| // CHECK-NEXT: [[ACCUM:%[0-9a-z]+]] = trunc i64 [[ACCUM_AS_I64]] to i32 |
| // CHECK-NEXT: store i32 [[ACCUM]], i32* %a, align 4 |
| |
| a = (_Accum)la; |
| // CHECK: [[LACCUM:%[0-9a-z]+]] = load i64, i64* %la, align 8 |
| // CHECK-NEXT: [[ACCUM_AS_I64:%[0-9a-z]+]] = ashr i64 [[LACCUM]], 16 |
| // CHECK-NEXT: [[ACCUM:%[0-9a-z]+]] = trunc i64 [[ACCUM_AS_I64]] to i32 |
| // CHECK-NEXT: store i32 [[ACCUM]], i32* %a, align 4 |
| |
| short _Accum sa = a; |
| // CHECK: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // CHECK-NEXT: [[SACCUM_AS_I32:%[0-9a-z]+]] = ashr i32 [[ACCUM]], 8 |
| // CHECK-NEXT: [[SACCUM:%[0-9a-z]+]] = trunc i32 [[SACCUM_AS_I32]] to i16 |
| // CHECK-NEXT: store i16 [[SACCUM]], i16* %sa, align 2 |
| |
| sa = (short _Accum)a; |
| // CHECK: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // CHECK-NEXT: [[SACCUM_AS_I32:%[0-9a-z]+]] = ashr i32 [[ACCUM]], 8 |
| // CHECK-NEXT: [[SACCUM:%[0-9a-z]+]] = trunc i32 [[SACCUM_AS_I32]] to i16 |
| // CHECK-NEXT: store i16 [[SACCUM]], i16* %sa, align 2 |
| } |
| |
| void TestFixedPointCastUp() { |
| short _Accum sa = 2.5hk; |
| _Accum a = sa; |
| // CHECK: [[SACCUM:%[0-9a-z]+]] = load i16, i16* %sa, align 2 |
| // CHECK-NEXT: [[SACCUM_BUFF:%[0-9a-z]+]] = sext i16 [[SACCUM]] to i32 |
| // CHECK-NEXT: [[ACCUM:%[0-9a-z]+]] = shl i32 [[SACCUM_BUFF]], 8 |
| // CHECK-NEXT: store i32 [[ACCUM]], i32* %a, align 4 |
| |
| long _Accum la = a; |
| // CHECK: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // CHECK-NEXT: [[ACCUM_BUFF:%[0-9a-z]+]] = sext i32 [[ACCUM]] to i64 |
| // CHECK-NEXT: [[LACCUM:%[0-9a-z]+]] = shl i64 [[ACCUM_BUFF]], 16 |
| // CHECK-NEXT: store i64 [[LACCUM]], i64* %la, align 8 |
| |
| a = (_Accum)sa; |
| // CHECK: [[SACCUM:%[0-9a-z]+]] = load i16, i16* %sa, align 2 |
| // CHECK-NEXT: [[SACCUM_BUFF:%[0-9a-z]+]] = sext i16 [[SACCUM]] to i32 |
| // CHECK-NEXT: [[ACCUM:%[0-9a-z]+]] = shl i32 [[SACCUM_BUFF]], 8 |
| // CHECK-NEXT: store i32 [[ACCUM]], i32* %a, align 4 |
| |
| la = (long _Accum)a; |
| // CHECK: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // CHECK-NEXT: [[ACCUM_BUFF:%[0-9a-z]+]] = sext i32 [[ACCUM]] to i64 |
| // CHECK-NEXT: [[LACCUM:%[0-9a-z]+]] = shl i64 [[ACCUM_BUFF]], 16 |
| // CHECK-NEXT: store i64 [[LACCUM]], i64* %la, align 8 |
| } |
| |
| void TestFixedPointCastSignedness() { |
| _Accum a = 2.5k; |
| unsigned _Accum ua = a; |
| // SIGNED: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // SIGNED-NEXT: [[UACCUM:%[0-9a-z]+]] = shl i32 [[ACCUM]], 1 |
| // SIGNED-NEXT: store i32 [[UACCUM]], i32* %ua, align 4 |
| // UNSIGNED: TestFixedPointCastSignedness |
| // UNSIGNED: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // UNSIGNED-NEXT: store i32 [[ACCUM]], i32* %ua, align 4 |
| |
| a = ua; |
| // SIGNED: [[UACCUM:%[0-9a-z]+]] = load i32, i32* %ua, align 4 |
| // SIGNED-NEXT: [[ACCUM:%[0-9a-z]+]] = lshr i32 [[UACCUM]], 1 |
| // SIGNED-NEXT: store i32 [[ACCUM]], i32* %a, align 4 |
| // UNSIGNED: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %ua, align 4 |
| // UNSIGNED-NEXT: store i32 [[ACCUM]], i32* %a, align 4 |
| |
| ua = (unsigned _Accum)a; |
| // SIGNED: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // SIGNED-NEXT: [[UACCUM:%[0-9a-z]+]] = shl i32 [[ACCUM]], 1 |
| // SIGNED-NEXT: store i32 [[UACCUM]], i32* %ua, align 4 |
| // UNSIGNED: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // UNSIGNED-NEXT: store i32 [[ACCUM]], i32* %ua, align 4 |
| |
| a = (_Accum)ua; |
| // SIGNED: [[UACCUM:%[0-9a-z]+]] = load i32, i32* %ua, align 4 |
| // SIGNED-NEXT: [[ACCUM:%[0-9a-z]+]] = lshr i32 [[UACCUM]], 1 |
| // SIGNED-NEXT: store i32 [[ACCUM]], i32* %a, align 4 |
| // UNSIGNED: [[UACCUM:%[0-9a-z]+]] = load i32, i32* %ua, align 4 |
| // UNSIGNED-NEXT: store i32 [[UACCUM]], i32* %a, align 4 |
| |
| _Accum a2; |
| unsigned long _Accum ula = a2; |
| // SIGNED: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a2, align 4 |
| // SIGNED-NEXT: [[ACCUM_EXT:%[0-9a-z]+]] = sext i32 [[ACCUM]] to i64 |
| // SIGNED-NEXT: [[LACCUM:%[0-9a-z]+]] = shl i64 [[ACCUM_EXT]], 17 |
| // SIGNED-NEXT: store i64 [[LACCUM]], i64* %ula, align 8 |
| // UNSIGNED: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a2, align 4 |
| // UNSIGNED-NEXT: [[ACCUM_EXT:%[0-9a-z]+]] = sext i32 [[ACCUM]] to i64 |
| // UNSIGNED-NEXT: [[LACCUM:%[0-9a-z]+]] = shl i64 [[ACCUM_EXT]], 16 |
| // UNSIGNED-NEXT: store i64 [[LACCUM]], i64* %ula, align 8 |
| } |
| |
| void TestFixedPointCastSaturation() { |
| _Accum a; |
| _Sat short _Accum sat_sa; |
| _Sat _Accum sat_a; |
| _Sat long _Accum sat_la; |
| _Sat unsigned short _Accum sat_usa; |
| _Sat unsigned _Accum sat_ua; |
| _Sat unsigned long _Accum sat_ula; |
| _Sat short _Fract sat_sf; |
| _Sat _Fract sat_f; |
| _Sat long _Fract sat_lf; |
| |
| // Casting down between types |
| sat_sa = sat_a; |
| // CHECK: [[OLD_ACCUM:%[0-9a-z]+]] = load i32, i32* %sat_a, align 4 |
| // CHECK-NEXT: [[ACCUM:%[0-9a-z]+]] = ashr i32 [[OLD_ACCUM]], 8 |
| // CHECK-NEXT: [[USE_MAX:%[0-9a-z]+]] = icmp sgt i32 [[ACCUM]], 32767 |
| // CHECK-NEXT: [[RESULT:%[0-9a-z]+]] = select i1 [[USE_MAX]], i32 32767, i32 [[ACCUM]] |
| // CHECK-NEXT: [[USE_MIN:%[0-9a-z]+]] = icmp slt i32 [[RESULT]], -32768 |
| // CHECK-NEXT: [[RESULT2:%[0-9a-z]+]] = select i1 [[USE_MIN]], i32 -32768, i32 [[RESULT]] |
| // CHECK-NEXT: [[RESULT_TRUNC:%[0-9a-z]+]] = trunc i32 [[RESULT2]] to i16 |
| // CHECK-NEXT: store i16 [[RESULT_TRUNC]], i16* %sat_sa, align 2 |
| |
| // Accum to Fract, decreasing scale |
| sat_sf = sat_a; |
| // CHECK: [[OLD_ACCUM:%[0-9a-z]+]] = load i32, i32* %sat_a, align 4 |
| // CHECK-NEXT: [[FRACT:%[0-9a-z]+]] = ashr i32 [[OLD_ACCUM]], 8 |
| // CHECK-NEXT: [[USE_MAX:%[0-9a-z]+]] = icmp sgt i32 [[FRACT]], 127 |
| // CHECK-NEXT: [[RESULT:%[0-9a-z]+]] = select i1 [[USE_MAX]], i32 127, i32 [[FRACT]] |
| // CHECK-NEXT: [[USE_MIN:%[0-9a-z]+]] = icmp slt i32 [[RESULT]], -128 |
| // CHECK-NEXT: [[RESULT2:%[0-9a-z]+]] = select i1 [[USE_MIN]], i32 -128, i32 [[RESULT]] |
| // CHECK-NEXT: [[RESULT_TRUNC:%[0-9a-z]+]] = trunc i32 [[RESULT2]] to i8 |
| // CHECK-NEXT: store i8 [[RESULT_TRUNC]], i8* %sat_sf, align 1 |
| |
| // Accum to Fract, same scale |
| sat_f = a; |
| // CHECK: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // CHECK-NEXT: [[USE_MAX:%[0-9a-z]+]] = icmp sgt i32 [[ACCUM]], 32767 |
| // CHECK-NEXT: [[RESULT:%[0-9a-z]+]] = select i1 [[USE_MAX]], i32 32767, i32 [[ACCUM]] |
| // CHECK-NEXT: [[USE_MIN:%[0-9a-z]+]] = icmp slt i32 [[RESULT]], -32768 |
| // CHECK-NEXT: [[RESULT2:%[0-9a-z]+]] = select i1 [[USE_MIN]], i32 -32768, i32 [[RESULT]] |
| // CHECK-NEXT: [[RESULT_TRUNC:%[0-9a-z]+]] = trunc i32 [[RESULT2]] to i16 |
| // CHECK-NEXT: store i16 [[RESULT_TRUNC]], i16* %sat_f, align 2 |
| |
| // Accum to Fract, increasing scale |
| sat_lf = sat_a; |
| // CHECK: [[OLD_ACCUM:%[0-9a-z]+]] = load i32, i32* %sat_a, align 4 |
| // CHECK-NEXT: [[RESIZE:%[0-9a-z]+]] = sext i32 [[OLD_ACCUM]] to i48 |
| // CHECK-NEXT: [[FRACT:%[0-9a-z]+]] = shl i48 [[RESIZE]], 16 |
| // CHECK-NEXT: [[USE_MAX:%[0-9a-z]+]] = icmp sgt i48 [[FRACT]], 2147483647 |
| // CHECK-NEXT: [[RESULT:%[0-9a-z]+]] = select i1 [[USE_MAX]], i48 2147483647, i48 [[FRACT]] |
| // CHECK-NEXT: [[USE_MIN:%[0-9a-z]+]] = icmp slt i48 [[RESULT]], -2147483648 |
| // CHECK-NEXT: [[RESULT2:%[0-9a-z]+]] = select i1 [[USE_MIN]], i48 -2147483648, i48 [[RESULT]] |
| // CHECK-NEXT: [[TRUNC:%[0-9a-z]+]] = trunc i48 [[RESULT2]] to i32 |
| // CHECK-NEXT: store i32 [[TRUNC]], i32* %sat_lf, align 4 |
| |
| // Signed to unsigned, decreasing scale |
| _Sat _Accum sat_a2; |
| sat_usa = sat_a2; |
| // SIGNED: [[OLD_ACCUM:%[0-9a-z]+]] = load i32, i32* %sat_a2, align 4 |
| // SIGNED-NEXT: [[ACCUM:%[0-9a-z]+]] = ashr i32 [[OLD_ACCUM]], 7 |
| // SIGNED-NEXT: [[USE_MAX:%[0-9a-z]+]] = icmp sgt i32 [[ACCUM]], 65535 |
| // SIGNED-NEXT: [[RESULT:%[0-9a-z]+]] = select i1 [[USE_MAX]], i32 65535, i32 [[ACCUM]] |
| // SIGNED-NEXT: [[USE_MIN:%[0-9a-z]+]] = icmp slt i32 [[RESULT]], 0 |
| // SIGNED-NEXT: [[RESULT2:%[0-9a-z]+]] = select i1 [[USE_MIN]], i32 0, i32 [[RESULT]] |
| // SIGNED-NEXT: [[RESULT_TRUNC:%[0-9a-z]+]] = trunc i32 [[RESULT2]] to i16 |
| // SIGNED-NEXT: store i16 [[RESULT_TRUNC]], i16* %sat_usa, align 2 |
| // UNSIGNED: [[OLD_ACCUM:%[0-9a-z]+]] = load i32, i32* %sat_a2, align 4 |
| // UNSIGNED-NEXT: [[ACCUM:%[0-9a-z]+]] = ashr i32 [[OLD_ACCUM]], 8 |
| // UNSIGNED-NEXT: [[USE_MAX:%[0-9a-z]+]] = icmp sgt i32 [[ACCUM]], 32767 |
| // UNSIGNED-NEXT: [[RESULT:%[0-9a-z]+]] = select i1 [[USE_MAX]], i32 32767, i32 [[ACCUM]] |
| // UNSIGNED-NEXT: [[USE_MIN:%[0-9a-z]+]] = icmp slt i32 [[RESULT]], 0 |
| // UNSIGNED-NEXT: [[RESULT2:%[0-9a-z]+]] = select i1 [[USE_MIN]], i32 0, i32 [[RESULT]] |
| // UNSIGNED-NEXT: [[RESULT_TRUNC:%[0-9a-z]+]] = trunc i32 [[RESULT2]] to i16 |
| // UNSIGNED-NEXT: store i16 [[RESULT_TRUNC]], i16* %sat_usa, align 2 |
| |
| // Signed to unsigned, increasing scale |
| sat_ua = sat_a; |
| // SIGNED: [[OLD_ACCUM:%[0-9a-z]+]] = load i32, i32* %sat_a, align 4 |
| // SIGNED-NEXT: [[RESIZE:%[0-9a-z]+]] = sext i32 [[OLD_ACCUM]] to i33 |
| // SIGNED-NEXT: [[ACCUM:%[0-9a-z]+]] = shl i33 [[RESIZE]], 1 |
| // SIGNED-NEXT: [[USE_MIN:%[0-9a-z]+]] = icmp slt i33 [[ACCUM]], 0 |
| // SIGNED-NEXT: [[RESULT2:%[0-9a-z]+]] = select i1 [[USE_MIN]], i33 0, i33 [[ACCUM]] |
| // SIGNED-NEXT: [[TRUNC:%[0-9a-z]+]] = trunc i33 [[RESULT2]] to i32 |
| // SIGNED-NEXT: store i32 [[TRUNC]], i32* %sat_ua, align 4 |
| // UNSIGNED: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %sat_a, align 4 |
| // UNSIGNED-NEXT: [[USE_MIN:%[0-9a-z]+]] = icmp slt i32 [[ACCUM]], 0 |
| // UNSIGNED-NEXT: [[RESULT:%[0-9a-z]+]] = select i1 [[USE_MIN]], i32 0, i32 [[ACCUM]] |
| // UNSIGNED-NEXT: store i32 [[RESULT]], i32* %sat_ua, align 4 |
| |
| // Nothing when saturating to the same type and size |
| sat_a = a; |
| // CHECK: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // CHECK-NEXT: store i32 [[ACCUM]], i32* %sat_a, align 4 |
| |
| // Nothing when assigning back |
| a = sat_a; |
| // CHECK: [[SAT_ACCUM:%[0-9a-z]+]] = load i32, i32* %sat_a, align 4 |
| // CHECK-NEXT: store i32 [[SAT_ACCUM]], i32* %a, align 4 |
| |
| // No overflow when casting from fract to signed accum |
| sat_a = sat_f; |
| // CHECK: [[FRACT:%[0-9a-z]+]] = load i16, i16* %sat_f, align 2 |
| // CHECK-NEXT: [[FRACT_EXT:%[0-9a-z]+]] = sext i16 [[FRACT]] to i32 |
| // CHECK-NEXT: store i32 [[FRACT_EXT]], i32* %sat_a, align 4 |
| |
| // Only get overflow checking if signed fract to unsigned accum |
| sat_ua = sat_sf; |
| // SIGNED: [[FRACT:%[0-9a-z]+]] = load i8, i8* %sat_sf, align 1 |
| // SIGNED-NEXT: [[FRACT_EXT:%[0-9a-z]+]] = sext i8 [[FRACT]] to i32 |
| // SIGNED-NEXT: [[ACCUM:%[0-9a-z]+]] = shl i32 [[FRACT_EXT]], 9 |
| // SIGNED-NEXT: [[IS_NEG:%[0-9a-z]+]] = icmp slt i32 [[ACCUM]], 0 |
| // SIGNED-NEXT: [[RESULT:%[0-9a-z]+]] = select i1 [[IS_NEG]], i32 0, i32 [[ACCUM]] |
| // SIGNED-NEXT: store i32 [[RESULT]], i32* %sat_ua, align 4 |
| // UNSIGNED: [[FRACT:%[0-9a-z]+]] = load i8, i8* %sat_sf, align 1 |
| // UNSIGNED-NEXT: [[FRACT_EXT:%[0-9a-z]+]] = sext i8 [[FRACT]] to i32 |
| // UNSIGNED-NEXT: [[ACCUM:%[0-9a-z]+]] = shl i32 [[FRACT_EXT]], 8 |
| // UNSIGNED-NEXT: [[IS_NEG:%[0-9a-z]+]] = icmp slt i32 [[ACCUM]], 0 |
| // UNSIGNED-NEXT: [[RESULT:%[0-9a-z]+]] = select i1 [[IS_NEG]], i32 0, i32 [[ACCUM]] |
| // UNSIGNED-NEXT: store i32 [[RESULT]], i32* %sat_ua, align 4 |
| } |
| |
| void TestFixedPointCastBetFractAccum() { |
| short _Accum sa; |
| _Accum a; |
| long _Accum la; |
| short _Fract sf; |
| _Fract f; |
| long _Fract lf; |
| unsigned _Accum ua; |
| unsigned _Fract uf; |
| |
| // To lower scale |
| sf = a; |
| // CHECK: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // CHECK-NEXT: [[FRACT:%[0-9a-z]+]] = ashr i32 [[ACCUM]], 8 |
| // CHECK-NEXT: [[FRACT_TRUNC:%[0-9a-z]+]] = trunc i32 [[FRACT]] to i8 |
| // CHECK-NEXT: store i8 [[FRACT_TRUNC]], i8* %sf, align 1 |
| |
| // To higher scale |
| a = sf; |
| // CHECK: [[FRACT:%[0-9a-z]+]] = load i8, i8* %sf, align 1 |
| // CHECK-NEXT: [[FRACT_EXT:%[0-9a-z]+]] = sext i8 [[FRACT]] to i32 |
| // CHECK-NEXT: [[ACCUM:%[0-9a-z]+]] = shl i32 [[FRACT_EXT]], 8 |
| // CHECK-NEXT: store i32 [[ACCUM]], i32* %a, align 4 |
| |
| // To same scale |
| f = a; |
| // CHECK: [[ACCUM:%[0-9a-z]+]] = load i32, i32* %a, align 4 |
| // CHECK-NEXT: [[FRACT:%[0-9a-z]+]] = trunc i32 [[ACCUM]] to i16 |
| // CHECK-NEXT: store i16 [[FRACT]], i16* %f, align 2 |
| |
| a = f; |
| // CHECK: [[FRACT:%[0-9a-z]+]] = load i16, i16* %f, align 2 |
| // CHECK-NEXT: [[ACCUM:%[0-9a-z]+]] = sext i16 [[FRACT]] to i32 |
| // CHECK-NEXT: store i32 [[ACCUM]], i32* %a, align 4 |
| |
| // To unsigned |
| ua = uf; |
| // CHECK: [[FRACT:%[0-9a-z]+]] = load i16, i16* %uf, align 2 |
| // CHECK-NEXT: [[ACCUM:%[0-9a-z]+]] = zext i16 [[FRACT]] to i32 |
| // CHECK-NEXT: store i32 [[ACCUM]], i32* %ua, align 4 |
| |
| uf = ua; |
| // CHECK: [[FRACT:%[0-9a-z]+]] = load i32, i32* %ua, align 4 |
| // CHECK-NEXT: [[ACCUM:%[0-9a-z]+]] = trunc i32 [[FRACT]] to i16 |
| // CHECK-NEXT: store i16 [[ACCUM]], i16* %uf, align 2 |
| } |
| |
| void TestFixedPointToInt() { |
| int i; |
| short _Accum sa; |
| unsigned short _Accum usa; |
| |
| // Will need to check for negative values |
| i = sa; |
| // CHECK: [[FX:%[0-9]+]] = load i16, i16* %sa, align 2 |
| // CHECK-NEXT: [[NEG:%[0-9]+]] = icmp slt i16 [[FX]], 0 |
| // CHECK-NEXT: [[ROUNDED:%[0-9]+]] = add i16 [[FX]], 127 |
| // CHECK-NEXT: [[VAL:%[0-9]+]] = select i1 [[NEG]], i16 [[ROUNDED]], i16 [[FX]] |
| // CHECK-NEXT: [[RES:%[a-z0-9]+]] = ashr i16 [[VAL]], 7 |
| // CHECK-NEXT: [[RES2:%[a-z0-9]+]] = sext i16 [[RES]] to i32 |
| // CHECK-NEXT: store i32 [[RES2]], i32* %i, align 4 |
| |
| // No check needed for unsigned fixed points. Can just right shift. |
| i = usa; |
| // SIGNED: [[FX:%[0-9]+]] = load i16, i16* %usa, align 2 |
| // SIGNED-NEXT: [[INT:%[a-z0-9]+]] = lshr i16 [[FX]], 8 |
| // SIGNED-NEXT: [[RES:%[a-z0-9]+]] = zext i16 [[INT]] to i32 |
| // SIGNED-NEXT: store i32 [[RES]], i32* %i, align 4 |
| // UNSIGNED: [[FX:%[0-9]+]] = load i16, i16* %usa, align 2 |
| // UNSIGNED-NEXT: [[INT:%[a-z0-9]+]] = lshr i16 [[FX]], 7 |
| // UNSIGNED-NEXT: [[RES:%[a-z0-9]+]] = zext i16 [[INT]] to i32 |
| // UNSIGNED-NEXT: store i32 [[RES]], i32* %i, align 4 |
| } |
| |
| void TestIntToFixedPoint() { |
| short s; |
| int i, i2; |
| unsigned int ui; |
| short _Accum sa; |
| long _Accum la; |
| unsigned short _Accum usa; |
| _Sat short _Accum sat_sa; |
| _Sat unsigned short _Accum sat_usa; |
| |
| sa = i; |
| // CHECK: [[I:%[0-9]+]] = load i32, i32* %i, align 4 |
| // CHECK-NEXT: [[I_EXT:%[a-z0-9]+]] = trunc i32 [[I]] to i16 |
| // CHECK-NEXT: [[FX:%[a-z0-9]+]] = shl i16 [[I_EXT]], 7 |
| // CHECK-NEXT: store i16 [[FX]], i16* %sa, align 2 |
| |
| sa = ui; |
| // CHECK: [[I:%[0-9]+]] = load i32, i32* %ui, align 4 |
| // CHECK-NEXT: [[I_EXT:%[a-z0-9]+]] = trunc i32 [[I]] to i16 |
| // CHECK-NEXT: [[FX:%[a-z0-9]+]] = shl i16 [[I_EXT]], 7 |
| // CHECK-NEXT: store i16 [[FX]], i16* %sa, align 2 |
| |
| usa = i2; |
| // SIGNED: [[I:%[0-9]+]] = load i32, i32* %i2, align 4 |
| // SIGNED-NEXT: [[I_EXT:%[a-z0-9]+]] = trunc i32 [[I]] to i16 |
| // SIGNED-NEXT: [[FX:%[a-z0-9]+]] = shl i16 [[I_EXT]], 8 |
| // SIGNED-NEXT: store i16 [[FX]], i16* %usa, align 2 |
| // UNSIGNED: [[I:%[0-9]+]] = load i32, i32* %i2, align 4 |
| // UNSIGNED-NEXT: [[I_EXT:%[a-z0-9]+]] = trunc i32 [[I]] to i16 |
| // UNSIGNED-NEXT: [[FX:%[a-z0-9]+]] = shl i16 [[I_EXT]], 7 |
| // UNSIGNED-NEXT: store i16 [[FX]], i16* %usa, align 2 |
| |
| usa = ui; |
| // SIGNED: [[I:%[0-9]+]] = load i32, i32* %ui, align 4 |
| // SIGNED-NEXT: [[I_EXT:%[a-z0-9]+]] = trunc i32 [[I]] to i16 |
| // SIGNED-NEXT: [[FX:%[a-z0-9]+]] = shl i16 [[I_EXT]], 8 |
| // SIGNED-NEXT: store i16 [[FX]], i16* %usa, align 2 |
| // UNSIGNED: [[I:%[0-9]+]] = load i32, i32* %ui, align 4 |
| // UNSIGNED-NEXT: [[I_EXT:%[a-z0-9]+]] = trunc i32 [[I]] to i16 |
| // UNSIGNED-NEXT: [[FX:%[a-z0-9]+]] = shl i16 [[I_EXT]], 7 |
| // UNSIGNED-NEXT: store i16 [[FX]], i16* %usa, align 2 |
| |
| la = s; |
| // CHECK: [[I:%[0-9]+]] = load i16, i16* %s, align 2 |
| // CHECK-NEXT: [[I_EXT:%[a-z0-9]+]] = sext i16 [[I]] to i64 |
| // CHECK-NEXT: [[FX:%[a-z0-9]+]] = shl i64 [[I_EXT]], 31 |
| // CHECK-NEXT: store i64 [[FX]], i64* %la, align 8 |
| } |
| |
| void TestIntToSatFixedPoint() { |
| int i, i2; |
| unsigned int ui; |
| _Sat short _Accum sat_sa; |
| _Sat unsigned short _Accum sat_usa; |
| |
| sat_sa = i; |
| // CHECK: [[I:%[0-9]+]] = load i32, i32* %i, align 4 |
| // CHECK-NEXT: [[I_EXT:%[a-z0-9]+]] = sext i32 [[I]] to i39 |
| // CHECK-NEXT: [[FX:%[a-z0-9]+]] = shl i39 [[I_EXT]], 7 |
| // CHECK-NEXT: [[USE_MAX:%[0-9]+]] = icmp sgt i39 [[FX]], 32767 |
| // CHECK-NEXT: [[SATMAX:%[a-z0-9]+]] = select i1 [[USE_MAX]], i39 32767, i39 [[FX]] |
| // CHECK-NEXT: [[USE_MIN:%[0-9]+]] = icmp slt i39 [[SATMAX]], -32768 |
| // CHECK-NEXT: [[SATMIN:%[a-z0-9]+]] = select i1 [[USE_MIN]], i39 -32768, i39 [[SATMAX]] |
| // CHECK-NEXT: [[RES:%[a-z0-9]+]] = trunc i39 [[SATMIN]] to i16 |
| // CHECK-NEXT: store i16 [[RES]], i16* %sat_sa, align 2 |
| |
| sat_sa = ui; |
| // CHECK: [[I:%[0-9]+]] = load i32, i32* %ui, align 4 |
| // CHECK-NEXT: [[I_EXT:%[a-z0-9]+]] = zext i32 [[I]] to i39 |
| // CHECK-NEXT: [[FX:%[a-z0-9]+]] = shl i39 [[I_EXT]], 7 |
| // CHECK-NEXT: [[USE_MAX:%[0-9]+]] = icmp ugt i39 [[FX]], 32767 |
| // CHECK-NEXT: [[SATMAX:%[a-z0-9]+]] = select i1 [[USE_MAX]], i39 32767, i39 [[FX]] |
| // CHECK-NEXT: [[RES:%[a-z0-9]+]] = trunc i39 [[SATMAX]] to i16 |
| // CHECK-NEXT: store i16 [[RES]], i16* %sat_sa, align 2 |
| |
| sat_usa = i2; |
| // SIGNED: [[I:%[0-9]+]] = load i32, i32* %i2, align 4 |
| // SIGNED-NEXT: [[I_EXT:%[a-z0-9]+]] = sext i32 [[I]] to i40 |
| // SIGNED-NEXT: [[FX:%[a-z0-9]+]] = shl i40 [[I_EXT]], 8 |
| // SIGNED-NEXT: [[USE_MAX:%[0-9]+]] = icmp sgt i40 [[FX]], 65535 |
| // SIGNED-NEXT: [[SATMAX:%[a-z0-9]+]] = select i1 [[USE_MAX]], i40 65535, i40 [[FX]] |
| // SIGNED-NEXT: [[USE_MIN:%[0-9]+]] = icmp slt i40 [[SATMAX]], 0 |
| // SIGNED-NEXT: [[SATMIN:%[a-z0-9]+]] = select i1 [[USE_MIN]], i40 0, i40 [[SATMAX]] |
| // SIGNED-NEXT: [[RES:%[a-z0-9]+]] = trunc i40 [[SATMIN]] to i16 |
| // SIGNED-NEXT: store i16 [[RES]], i16* %sat_usa, align 2 |
| // UNSIGNED: [[I:%[0-9]+]] = load i32, i32* %i2, align 4 |
| // UNSIGNED-NEXT: [[I_EXT:%[a-z0-9]+]] = sext i32 [[I]] to i39 |
| // UNSIGNED-NEXT: [[FX:%[a-z0-9]+]] = shl i39 [[I_EXT]], 7 |
| // UNSIGNED-NEXT: [[USE_MAX:%[0-9]+]] = icmp sgt i39 [[FX]], 32767 |
| // UNSIGNED-NEXT: [[SATMAX:%[a-z0-9]+]] = select i1 [[USE_MAX]], i39 32767, i39 [[FX]] |
| // UNSIGNED-NEXT: [[USE_MIN:%[0-9]+]] = icmp slt i39 [[SATMAX]], 0 |
| // UNSIGNED-NEXT: [[SATMIN:%[a-z0-9]+]] = select i1 [[USE_MIN]], i39 0, i39 [[SATMAX]] |
| // UNSIGNED-NEXT: [[RES:%[a-z0-9]+]] = trunc i39 [[SATMIN]] to i16 |
| // UNSIGNED-NEXT: store i16 [[RES]], i16* %sat_usa, align 2 |
| |
| sat_usa = ui; |
| // SIGNED: [[I:%[0-9]+]] = load i32, i32* %ui, align 4 |
| // SIGNED-NEXT: [[I_EXT:%[a-z0-9]+]] = zext i32 [[I]] to i40 |
| // SIGNED-NEXT: [[FX:%[a-z0-9]+]] = shl i40 [[I_EXT]], 8 |
| // SIGNED-NEXT: [[USE_MAX:%[0-9]+]] = icmp ugt i40 [[FX]], 65535 |
| // SIGNED-NEXT: [[SATMAX:%[a-z0-9]+]] = select i1 [[USE_MAX]], i40 65535, i40 [[FX]] |
| // SIGNED-NEXT: [[RES:%[a-z0-9]+]] = trunc i40 [[SATMAX]] to i16 |
| // SIGNED-NEXT: store i16 [[RES]], i16* %sat_usa, align 2 |
| // UNSIGNED: [[I:%[0-9]+]] = load i32, i32* %ui, align 4 |
| // UNSIGNED-NEXT: [[I_EXT:%[a-z0-9]+]] = zext i32 [[I]] to i39 |
| // UNSIGNED-NEXT: [[FX:%[a-z0-9]+]] = shl i39 [[I_EXT]], 7 |
| // UNSIGNED-NEXT: [[USE_MAX:%[0-9]+]] = icmp ugt i39 [[FX]], 32767 |
| // UNSIGNED-NEXT: [[SATMAX:%[a-z0-9]+]] = select i1 [[USE_MAX]], i39 32767, i39 [[FX]] |
| // UNSIGNED-NEXT: [[RES:%[a-z0-9]+]] = trunc i39 [[SATMAX]] to i16 |
| // UNSIGNED-NEXT: store i16 [[RES]], i16* %sat_usa, align 2 |
| } |
