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

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[Fixed Point Arithmetic] Fixed Point Addition Constant Expression Evaluation This patch includes logic for constant expression evaluation of fixed point additions. Differential Revision: https://reviews.llvm.org/D55868 llvm-svn: 351593
2019-01-19 05:04:25 +08:00
// 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 -fpadding-on-unsigned-fixed-point -S -emit-llvm %s -o - | FileCheck %s --check-prefixes=CHECK,UNSIGNED
// Addition between different fixed point types
short _Accum sa_const = 1.0hk + 2.0hk; // CHECK-DAG: @sa_const = {{.*}}global i16 384, align 2
_Accum a_const = 1.0hk + 2.0k; // CHECK-DAG: @a_const = {{.*}}global i32 98304, align 4
long _Accum la_const = 1.0hk + 2.0lk; // CHECK-DAG: @la_const = {{.*}}global i64 6442450944, align 8
short _Accum sa_const2 = 0.5hr + 2.0hk; // CHECK-DAG: @sa_const2 = {{.*}}global i16 320, align 2
short _Accum sa_const3 = 0.5r + 2.0hk; // CHECK-DAG: @sa_const3 = {{.*}}global i16 320, align 2
short _Accum sa_const4 = 0.5lr + 2.0hk; // CHECK-DAG: @sa_const4 = {{.*}}global i16 320, align 2
// Unsigned addition
unsigned short _Accum usa_const = 1.0uhk + 2.0uhk;
// CHECK-SIGNED-DAG: @usa_const = {{.*}}global i16 768, align 2
// CHECK-UNSIGNED-DAG: @usa_const = {{.*}}global i16 384, align 2
// Unsigned + signed
short _Accum sa_const5 = 1.0uhk + 2.0hk;
// CHECK-DAG: @sa_const5 = {{.*}}global i16 384, align 2
// Addition with negative number
short _Accum sa_const6 = 0.5hr + (-2.0hk);
// CHECK-DAG: @sa_const6 = {{.*}}global i16 -192, align 2
// Int addition
unsigned short _Accum usa_const2 = 2 + 0.5uhk;
// CHECK-SIGNED-DAG: @usa_const2 = {{.*}}global i16 640, align 2
// CHECK-UNSIGNED-DAG: @usa_const2 = {{.*}}global i16 320, align 2
short _Accum sa_const7 = 2 + (-0.5hk); // CHECK-DAG: @sa_const7 = {{.*}}global i16 192, align 2
short _Accum sa_const8 = 257 + (-2.0hk); // CHECK-DAG: @sa_const8 = {{.*}}global i16 32640, align 2
long _Fract lf_const = -0.5lr + 1; // CHECK-DAG: @lf_const = {{.*}}global i32 1073741824, align 4
// Saturated addition
_Sat short _Accum sat_sa_const = (_Sat short _Accum)128.0hk + 128.0hk;
// CHECK-DAG: @sat_sa_const = {{.*}}global i16 32767, align 2
_Sat unsigned short _Accum sat_usa_const = (_Sat unsigned short _Accum)128.0uhk + 128.0uhk;
// CHECK-SIGNED-DAG: @sat_usa_const = {{.*}}global i16 65535, align 2
// CHECK-UNSIGNED-DAG: @sat_usa_const = {{.*}}global i16 32767, align 2
_Sat short _Accum sat_sa_const2 = (_Sat short _Accum)128.0hk + 128;
// CHECK-DAG: @sat_sa_const2 = {{.*}}global i16 32767, align 2
_Sat unsigned short _Accum sat_usa_const2 = (_Sat unsigned short _Accum)128.0uhk + 128;
// CHECK-SIGNED-DAG: @sat_usa_const2 = {{.*}}global i16 65535, align 2
// CHECK-UNSIGNED-DAG: @sat_usa_const2 = {{.*}}global i16 32767, align 2
_Sat unsigned short _Accum sat_usa_const3 = (_Sat unsigned short _Accum)0.5uhk + (-2);
// CHECK-DAG: @sat_usa_const3 = {{.*}}global i16 0, align 2
[Fixed Point Arithmetic] Fixed Point Addition This patch covers addition between fixed point types and other fixed point types or integers, using the conversion rules described in 4.1.4 of N1169. Usual arithmetic rules do not apply to binary operations when one of the operands is a fixed point type, and the result of the operation must be calculated with the full precision of the operands, so we should not perform any casting to a common type. This patch does not include constant expression evaluation for addition of fixed point types. That will be addressed in another patch since I think this one is already big enough. Differential Revision: https://reviews.llvm.org/D53738 llvm-svn: 351364
2019-01-17 02:13:59 +08:00
void SignedAddition() {
// CHECK-LABEL: SignedAddition
short _Accum sa;
_Accum a, b, c, d;
long _Accum la;
unsigned short _Accum usa;
unsigned _Accum ua;
unsigned long _Accum ula;
short _Fract sf;
_Fract f;
long _Fract lf;
unsigned short _Fract usf;
unsigned _Fract uf;
unsigned long _Fract ulf;
// Same type
// CHECK: [[SA:%[0-9]+]] = load i16, i16* %sa, align 2
// CHECK-NEXT: [[SA2:%[0-9]+]] = load i16, i16* %sa, align 2
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i16 [[SA]], [[SA2]]
// CHECK-NEXT: store i16 [[SUM]], i16* %sa, align 2
sa = sa + sa;
// To larger scale and larger width
// CHECK: [[SA:%[0-9]+]] = load i16, i16* %sa, align 2
// CHECK-NEXT: [[A:%[0-9]+]] = load i32, i32* %a, align 4
// CHECK-NEXT: [[EXT_SA:%[a-z0-9]+]] = sext i16 [[SA]] to i32
// CHECK-NEXT: [[SA:%[a-z0-9]+]] = shl i32 [[EXT_SA]], 8
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i32 [[SA]], [[A]]
// CHECK-NEXT: store i32 [[SUM]], i32* %a, align 4
a = sa + a;
// To same scale and smaller width
// CHECK: [[SA:%[0-9]+]] = load i16, i16* %sa, align 2
// CHECK-NEXT: [[SF:%[0-9]+]] = load i8, i8* %sf, align 1
// CHECK-NEXT: [[EXT_SF:%[a-z0-9]+]] = sext i8 [[SF]] to i16
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i16 [[SA]], [[EXT_SF]]
// CHECK-NEXT: store i16 [[SUM]], i16* %sa, align 2
sa = sa + sf;
// To smaller scale and same width.
// CHECK: [[SA:%[0-9]+]] = load i16, i16* %sa, align 2
// CHECK-NEXT: [[F:%[0-9]+]] = load i16, i16* %f, align 2
// CHECK-NEXT: [[EXT_SA:%[a-z0-9]+]] = sext i16 [[SA]] to i24
// CHECK-NEXT: [[SA:%[a-z0-9]+]] = shl i24 [[EXT_SA]], 8
// CHECK-NEXT: [[EXT_F:%[a-z0-9]+]] = sext i16 [[F]] to i24
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i24 [[SA]], [[EXT_F]]
// CHECK-NEXT: [[RES:%[a-z0-9]+]] = ashr i24 [[SUM]], 8
// CHECK-NEXT: [[TRUNC_RES:%[a-z0-9]+]] = trunc i24 [[RES]] to i16
// CHECK-NEXT: store i16 [[TRUNC_RES]], i16* %sa, align 2
sa = sa + f;
// To smaller scale and smaller width
// CHECK: [[A:%[0-9]+]] = load i32, i32* %a, align 4
// CHECK-NEXT: [[SF:%[0-9]+]] = load i8, i8* %sf, align 1
// CHECK-NEXT: [[EXT_SF:%[a-z0-9]+]] = sext i8 [[SF]] to i32
// CHECK-NEXT: [[SF:%[a-z0-9]+]] = shl i32 [[EXT_SF]], 8
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i32 [[A]], [[SF]]
// CHECK-NEXT: store i32 [[SUM]], i32* %a, align 4
a = a + sf;
// To larger scale and same width
// CHECK: [[A:%[0-9]+]] = load i32, i32* %a, align 4
// CHECK-NEXT: [[LF:%[0-9]+]] = load i32, i32* %lf, align 4
// CHECK-NEXT: [[EXT_A:%[a-z0-9]+]] = sext i32 [[A]] to i48
// CHECK-NEXT: [[A:%[a-z0-9]+]] = shl i48 [[EXT_A]], 16
// CHECK-NEXT: [[EXT_LF:%[a-z0-9]+]] = sext i32 [[LF]] to i48
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i48 [[A]], [[EXT_LF]]
// CHECK-NEXT: [[RES:%[a-z0-9]+]] = ashr i48 [[SUM]], 16
// CHECK-NEXT: [[TRUNC_RES:%[a-z0-9]+]] = trunc i48 [[RES]] to i32
// CHECK-NEXT: store i32 [[TRUNC_RES]], i32* %a, align 4
a = a + lf;
// With corresponding unsigned type
// CHECK: [[SA:%[0-9]+]] = load i16, i16* %sa, align 2
// CHECK-NEXT: [[USA:%[0-9]+]] = load i16, i16* %usa, align 2
// SIGNED-NEXT: [[SA_EXT:%[a-z0-9]+]] = sext i16 [[SA]] to i17
// SIGNED-NEXT: [[SA:%[a-z0-9]+]] = shl i17 [[SA_EXT]], 1
// SIGNED-NEXT: [[USA_EXT:%[a-z0-9]+]] = zext i16 [[USA]] to i17
// SIGNED-NEXT: [[SUM:%[0-9]+]] = add i17 [[SA]], [[USA_EXT]]
// SIGNED-NEXT: [[RESULT:%[a-z0-9]+]] = ashr i17 [[SUM]], 1
// SIGNED-NEXT: [[SUM:%[a-z0-9]+]] = trunc i17 [[RESULT]] to i16
// UNSIGNED-NEXT: [[SUM:%[0-9]+]] = add i16 [[SA]], [[USA]]
// CHECK-NEXT: store i16 [[SUM]], i16* %sa, align 2
sa = sa + usa;
// With unsigned of larger scale
// CHECK: [[SA:%[0-9]+]] = load i16, i16* %sa, align 2
// CHECK-NEXT: [[USA:%[0-9]+]] = load i32, i32* %ua, align 4
// SIGNED-NEXT: [[SA_EXT:%[a-z0-9]+]] = sext i16 [[SA]] to i33
// SIGNED-NEXT: [[SA:%[a-z0-9]+]] = shl i33 [[SA_EXT]], 9
// SIGNED-NEXT: [[USA_EXT:%[a-z0-9]+]] = zext i32 [[USA]] to i33
// SIGNED-NEXT: [[SUM:%[0-9]+]] = add i33 [[SA]], [[USA_EXT]]
// SIGNED-NEXT: [[RESULT:%[a-z0-9]+]] = ashr i33 [[SUM]], 1
// SIGNED-NEXT: [[SUM:%[a-z0-9]+]] = trunc i33 [[RESULT]] to i32
// UNSIGNED-NEXT: [[EXT_SA:%[a-z0-9]+]] = sext i16 [[SA]] to i32
// UNSIGNED-NEXT: [[SA:%[a-z0-9]+]] = shl i32 [[EXT_SA]], 8
// UNSIGNED-NEXT: [[SUM:%[0-9]+]] = add i32 [[SA]], [[USA]]
// CHECK-NEXT: store i32 [[SUM]], i32* %a, align 4
a = sa + ua;
// With unsigned of smaller width
// CHECK: [[SA:%[0-9]+]] = load i16, i16* %sa, align 2
// CHECK-NEXT: [[USF:%[0-9]+]] = load i8, i8* %usf, align 1
// SIGNED-NEXT: [[SA_EXT:%[a-z0-9]+]] = sext i16 [[SA]] to i17
// SIGNED-NEXT: [[SA:%[a-z0-9]+]] = shl i17 [[SA_EXT]], 1
// SIGNED-NEXT: [[USF_EXT:%[a-z0-9]+]] = zext i8 [[USF]] to i17
// SIGNED-NEXT: [[SUM:%[0-9]+]] = add i17 [[SA]], [[USF_EXT]]
// SIGNED-NEXT: [[RESULT:%[a-z0-9]+]] = ashr i17 [[SUM]], 1
// SIGNED-NEXT: [[SUM:%[a-z0-9]+]] = trunc i17 [[RESULT]] to i16
// UNSIGNED-NEXT: [[EXT_USF:%[a-z0-9]+]] = zext i8 [[USF]] to i16
// UNSIGNED-NEXT: [[SUM:%[0-9]+]] = add i16 [[SA]], [[EXT_USF]]
// CHECK-NEXT: store i16 [[SUM]], i16* %sa, align 2
sa = sa + usf;
// With unsigned of larger width and smaller scale
// CHECK: [[SA:%[0-9]+]] = load i16, i16* %sa, align 2
// CHECK-NEXT: [[ULF:%[0-9]+]] = load i32, i32* %ulf, align 4
// SIGNED-NEXT: [[SA_EXT:%[a-z0-9]+]] = sext i16 [[SA]] to i41
// SIGNED-NEXT: [[SA:%[a-z0-9]+]] = shl i41 [[SA_EXT]], 25
// SIGNED-NEXT: [[ULF_EXT:%[a-z0-9]+]] = zext i32 [[ULF]] to i41
// SIGNED-NEXT: [[SUM:%[0-9]+]] = add i41 [[SA]], [[ULF_EXT]]
// SIGNED-NEXT: [[RESULT:%[a-z0-9]+]] = ashr i41 [[SUM]], 25
// SIGNED-NEXT: [[RES_TRUNC:%[a-z0-9]+]] = trunc i41 [[RESULT]] to i16
// UNSIGNED-NEXT: [[EXT_SA:%[a-z0-9]+]] = sext i16 [[SA]] to i40
// UNSIGNED-NEXT: [[SA:%[a-z0-9]+]] = shl i40 [[EXT_SA]], 24
// UNSIGNED-NEXT: [[EXT_ULF:%[a-z0-9]+]] = zext i32 [[ULF]] to i40
// UNSIGNED-NEXT: [[SUM:%[0-9]+]] = add i40 [[SA]], [[EXT_ULF]]
// UNSIGNED-NEXT: [[RES:%[a-z0-9]+]] = ashr i40 [[SUM]], 24
// UNSIGNED-NEXT: [[RES_TRUNC:%[a-z0-9]+]] = trunc i40 [[RES]] to i16
// CHECK-NEXT: store i16 [[RES_TRUNC]], i16* %sa, align 2
sa = sa + ulf;
// Chained additions of the same signed type should result in the same
// semantics width.
// CHECK: [[A:%[0-9]+]] = load i32, i32* %a, align 4
// CHECK-NEXT: [[B:%[0-9]+]] = load i32, i32* %b, align 4
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i32 [[A]], [[B]]
// CHECK-NEXT: [[C:%[0-9]+]] = load i32, i32* %c, align 4
// CHECK-NEXT: [[SUM2:%[0-9]+]] = add i32 [[SUM]], [[C]]
// CHECK-NEXT: [[D:%[0-9]+]] = load i32, i32* %d, align 4
// CHECK-NEXT: [[SUM3:%[0-9]+]] = add i32 [[SUM2]], [[D]]
// CHECK-NEXT: store i32 [[SUM3]], i32* %a, align 4
a = a + b + c + d;
}
void UnsignedAddition() {
// CHECK-LABEL: UnsignedAddition
unsigned short _Accum usa;
unsigned _Accum ua;
unsigned long _Accum ula;
unsigned short _Fract usf;
unsigned _Fract uf;
unsigned long _Fract ulf;
// CHECK: [[USA:%[0-9]+]] = load i16, i16* %usa, align 2
// CHECK-NEXT: [[USA2:%[0-9]+]] = load i16, i16* %usa, align 2
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i16 [[USA]], [[USA2]]
// CHECK-NEXT: store i16 [[SUM]], i16* %usa, align 2
usa = usa + usa;
// CHECK: [[USA:%[0-9]+]] = load i16, i16* %usa, align 2
// CHECK-NEXT: [[UA:%[0-9]+]] = load i32, i32* %ua, align 4
// CHECK-NEXT: [[EXT_USA:%[a-z0-9]+]] = zext i16 [[USA]] to i32
// CHECK-NEXT: [[USA:%[a-z0-9]+]] = shl i32 [[EXT_USA]], 8
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i32 [[USA]], [[UA]]
// CHECK-NEXT: store i32 [[SUM]], i32* %ua, align 4
ua = usa + ua;
// CHECK: [[USA:%[0-9]+]] = load i16, i16* %usa, align 2
// CHECK-NEXT: [[USF:%[0-9]+]] = load i8, i8* %usf, align 1
// CHECK-NEXT: [[EXT_USF:%[a-z0-9]+]] = zext i8 [[USF]] to i16
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i16 [[USA]], [[EXT_USF]]
// CHECK-NEXT: store i16 [[SUM]], i16* %usa, align 2
usa = usa + usf;
// CHECK: [[USA:%[0-9]+]] = load i16, i16* %usa, align 2
// CHECK-NEXT: [[UF:%[0-9]+]] = load i16, i16* %uf, align 2
// CHECK-NEXT: [[USA_EXT:%[a-z0-9]+]] = zext i16 [[USA]] to i24
// CHECK-NEXT: [[USA:%[a-z0-9]+]] = shl i24 [[USA_EXT]], 8
// CHECK-NEXT: [[UF_EXT:%[a-z0-9]+]] = zext i16 [[UF]] to i24
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i24 [[USA]], [[UF_EXT]]
// CHECK-NEXT: [[RES:%[a-z0-9]+]] = lshr i24 [[SUM]], 8
// CHECK-NEXT: [[RES_TRUNC:%[a-z0-9]+]] = trunc i24 [[RES]] to i16
// CHECK-NEXT: store i16 [[RES_TRUNC]], i16* %usa, align 2
usa = usa + uf;
}
void IntAddition() {
// CHECK-LABEL: IntAddition
short _Accum sa;
_Accum a;
unsigned short _Accum usa;
_Sat short _Accum sa_sat;
int i;
unsigned int ui;
long _Fract lf;
_Bool b;
// CHECK: [[SA:%[0-9]+]] = load i16, i16* %sa, align 2
// CHECK-NEXT: [[I:%[0-9]+]] = load i32, i32* %i, align 4
// CHECK-NEXT: [[SA_EXT:%[a-z0-9]+]] = sext i16 [[SA]] to i39
// CHECK-NEXT: [[I_EXT:%[a-z0-9]+]] = sext i32 [[I]] to i39
// CHECK-NEXT: [[I:%[a-z0-9]+]] = shl i39 [[I_EXT]], 7
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i39 [[SA_EXT]], [[I]]
// CHECK-NEXT: [[RES:%[a-z0-9]+]] = trunc i39 [[SUM]] to i16
// CHECK-NEXT: store i16 [[RES]], i16* %sa, align 2
sa = sa + i;
// CHECK: [[SA:%[0-9]+]] = load i16, i16* %sa, align 2
// CHECK-NEXT: [[UI:%[0-9]+]] = load i32, i32* %ui, align 4
// CHECK-NEXT: [[SA_EXT:%[a-z0-9]+]] = sext i16 [[SA]] to i40
// CHECK-NEXT: [[UI_EXT:%[a-z0-9]+]] = zext i32 [[UI]] to i40
// CHECK-NEXT: [[UI:%[a-z0-9]+]] = shl i40 [[UI_EXT]], 7
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i40 [[SA_EXT]], [[UI]]
// CHECK-NEXT: [[RES:%[a-z0-9]+]] = trunc i40 [[SUM]] to i16
// CHECK-NEXT: store i16 [[RES]], i16* %sa, align 2
sa = sa + ui;
// CHECK: [[USA:%[0-9]+]] = load i16, i16* %usa, align 2
// CHECK-NEXT: [[I:%[0-9]+]] = load i32, i32* %i, align 4
// SIGNED-NEXT: [[USA_EXT:%[a-z0-9]+]] = zext i16 [[USA]] to i40
// SIGNED-NEXT: [[I_EXT:%[a-z0-9]+]] = sext i32 [[I]] to i40
// SIGNED-NEXT: [[I:%[a-z0-9]+]] = shl i40 [[I_EXT]], 8
// SIGNED-NEXT: [[SUM:%[0-9]+]] = add i40 [[USA_EXT]], [[I]]
// SIGNED-NEXT: [[RES:%[a-z0-9]+]] = trunc i40 [[SUM]] to i16
// UNSIGNED-NEXT: [[USA_EXT:%[a-z0-9]+]] = zext i16 [[USA]] to i39
// UNSIGNED-NEXT: [[I_EXT:%[a-z0-9]+]] = sext i32 [[I]] to i39
// UNSIGNED-NEXT: [[I:%[a-z0-9]+]] = shl i39 [[I_EXT]], 7
// UNSIGNED-NEXT: [[SUM:%[0-9]+]] = add i39 [[USA_EXT]], [[I]]
// UNSIGNED-NEXT: [[RES:%[a-z0-9]+]] = trunc i39 [[SUM]] to i16
// CHECK-NEXT: store i16 [[RES]], i16* %usa, align 2
usa = usa + i;
// CHECK: [[USA:%[0-9]+]] = load i16, i16* %usa, align 2
// CHECK-NEXT: [[I:%[0-9]+]] = load i32, i32* %ui, align 4
// SIGNED-NEXT: [[USA_EXT:%[a-z0-9]+]] = zext i16 [[USA]] to i40
// SIGNED-NEXT: [[I_EXT:%[a-z0-9]+]] = zext i32 [[I]] to i40
// SIGNED-NEXT: [[I:%[a-z0-9]+]] = shl i40 [[I_EXT]], 8
// SIGNED-NEXT: [[SUM:%[0-9]+]] = add i40 [[USA_EXT]], [[I]]
// SIGNED-NEXT: [[RES:%[a-z0-9]+]] = trunc i40 [[SUM]] to i16
// UNSIGNED-NEXT: [[USA_EXT:%[a-z0-9]+]] = zext i16 [[USA]] to i39
// UNSIGNED-NEXT: [[I_EXT:%[a-z0-9]+]] = zext i32 [[I]] to i39
// UNSIGNED-NEXT: [[I:%[a-z0-9]+]] = shl i39 [[I_EXT]], 7
// UNSIGNED-NEXT: [[SUM:%[0-9]+]] = add i39 [[USA_EXT]], [[I]]
// UNSIGNED-NEXT: [[RES:%[a-z0-9]+]] = trunc i39 [[SUM]] to i16
// CHECK-NEXT: store i16 [[RES]], i16* %usa, align 2
usa = usa + ui;
// CHECK: [[LF:%[0-9]+]] = load i32, i32* %lf, align 4
// CHECK-NEXT: [[UI:%[0-9]+]] = load i32, i32* %ui, align 4
// CHECK-NEXT: [[LF_EXT:%[a-z0-9]+]] = sext i32 [[LF]] to i64
// CHECK-NEXT: [[UI_EXT:%[a-z0-9]+]] = zext i32 [[UI]] to i64
// CHECK-NEXT: [[UI:%[a-z0-9]+]] = shl i64 [[UI_EXT]], 31
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i64 [[LF_EXT]], [[UI]]
// CHECK-NEXT: [[RES:%[a-z0-9]+]] = trunc i64 [[SUM]] to i32
// CHECK-NEXT: store i32 [[RES]], i32* %lf, align 4
lf = lf + ui;
// CHECK: [[ACCUM:%[0-9]+]] = load i32, i32* %a, align 4
// CHECK-NEXT: [[BOOL:%[0-9]+]] = load i8, i8* %b, align 1
// CHECK-NEXT: [[AS_BOOL:%[a-z0-9]+]] = trunc i8 [[BOOL]] to i1
// CHECK-NEXT: [[BOOL_EXT:%[a-z0-9]+]] = zext i1 [[AS_BOOL]] to i32
// CHECK-NEXT: [[ACCUM_EXT:%[a-z0-9]+]] = sext i32 [[ACCUM]] to i47
// CHECK-NEXT: [[BOOL:%[a-z0-9]+]] = sext i32 [[BOOL_EXT]] to i47
// CHECK-NEXT: [[BOOL_EXT:%[a-z0-9]+]] = shl i47 [[BOOL]], 15
// CHECK-NEXT: [[SUM:%[0-9]+]] = add i47 [[ACCUM_EXT]], [[BOOL_EXT]]
// CHECK-NEXT: [[RESULT:%[a-z0-9]+]] = trunc i47 [[SUM]] to i32
// CHECK-NEXT: store i32 [[RESULT]], i32* %a, align 4
a = a + b;
}
void SaturatedAddition() {
// CHECK-LABEL: SaturatedAddition
short _Accum sa;
_Accum a;
long _Accum la;
unsigned short _Accum usa;
unsigned _Accum ua;
unsigned long _Accum ula;
_Sat short _Accum sa_sat;
_Sat _Accum a_sat;
_Sat long _Accum la_sat;
_Sat unsigned short _Accum usa_sat;
_Sat unsigned _Accum ua_sat;
_Sat unsigned long _Accum ula_sat;
_Sat unsigned _Fract uf_sat;
int i;
unsigned int ui;
// CHECK: [[SA:%[0-9]+]] = load i16, i16* %sa, align 2
// CHECK-NEXT: [[SA_SAT:%[0-9]+]] = load i16, i16* %sa_sat, align 2
// CHECK-NEXT: [[SUM:%[0-9]+]] = call i16 @llvm.sadd.sat.i16(i16 [[SA]], i16
// [[SA_SAT]])
// CHECK-NEXT: store i16 [[SUM]], i16* %sa_sat, align 2
sa_sat = sa + sa_sat;
// CHECK: [[USA:%[0-9]+]] = load i16, i16* %usa, align 2
// CHECK-NEXT: [[USA_SAT:%[0-9]+]] = load i16, i16* %usa_sat, align 2
// SIGNED-NEXT: [[SUM:%[0-9]+]] = call i16 @llvm.uadd.sat.i16(i16 [[USA]], i16 [[USA_SAT]])
// SIGNED-NEXT: store i16 [[SUM]], i16* %usa_sat, align 2
// UNSIGNED-NEXT: [[USA_TRUNC:%[a-z0-9]+]] = trunc i16 [[USA]] to i15
// UNSIGNED-NEXT: [[USA_SAT_TRUNC:%[a-z0-9]+]] = trunc i16 [[USA_SAT]] to i15
// UNSIGNED-NEXT: [[SUM:%[0-9]+]] = call i15 @llvm.uadd.sat.i15(i15 [[USA_TRUNC]], i15 [[USA_SAT_TRUNC]])
// UNSIGNED-NEXT: [[SUM_EXT:%[a-z0-9]+]] = zext i15 [[SUM]] to i16
// UNSIGNED-NEXT: store i16 [[SUM_EXT]], i16* %usa_sat, align 2
usa_sat = usa + usa_sat;
// CHECK: [[UA:%[0-9]+]] = load i32, i32* %ua, align 4
// CHECK-NEXT: [[USA:%[0-9]+]] = load i16, i16* %usa_sat, align 2
// SIGNED-NEXT: [[USA_EXT:%[a-z0-9]+]] = zext i16 [[USA]] to i32
// SIGNED-NEXT: [[USA:%[a-z0-9]+]] = shl i32 [[USA_EXT]], 8
// SIGNED-NEXT: [[SUM:%[0-9]+]] = call i32 @llvm.uadd.sat.i32(i32 [[UA]], i32 [[USA]])
// SIGNED-NEXT: store i32 [[SUM]], i32* %ua_sat, align 4
// UNSIGNED-NEXT: [[UA_TRUNC:%[a-z0-9]+]] = trunc i32 [[UA]] to i31
// UNSIGNED-NEXT: [[USA_EXT:%[a-z0-9]+]] = zext i16 [[USA]] to i31
// UNSIGNED-NEXT: [[USA:%[a-z0-9]+]] = shl i31 [[USA_EXT]], 8
// UNSIGNED-NEXT: [[SUM:%[0-9]+]] = call i31 @llvm.uadd.sat.i31(i31 [[UA_TRUNC]], i31 [[USA]])
// UNSIGNED-NEXT: [[SUM_EXT:%[a-z0-9]+]] = zext i31 [[SUM]] to i32
// UNSIGNED-NEXT: store i32 [[SUM_EXT]], i32* %ua_sat, align 4
ua_sat = ua + usa_sat;
// CHECK: [[SA_SAT:%[0-9]+]] = load i16, i16* %sa_sat, align 2
// CHECK-NEXT: [[I:%[0-9]+]] = load i32, i32* %i, align 4
// CHECK-NEXT: [[SA_SAT_EXT:%[a-z0-9]+]] = sext i16 [[SA_SAT]] to i39
// CHECK-NEXT: [[I_EXT:%[a-z0-9]+]] = sext i32 [[I]] to i39
// CHECK-NEXT: [[I:%[a-z0-9]+]] = shl i39 [[I_EXT]], 7
// CHECK-NEXT: [[SUM:%[0-9]+]] = call i39 @llvm.sadd.sat.i39(i39 [[SA_SAT_EXT]], i39 [[I]])
// CHECK-NEXT: [[USE_MAX:%[0-9]+]] = icmp sgt i39 [[SUM]], 32767
// CHECK-NEXT: [[RES:%[a-z0-9]+]] = select i1 [[USE_MAX]], i39 32767, i39 [[SUM]]
// CHECK-NEXT: [[USE_MIN:%[0-9]+]] = icmp slt i39 [[RES]], -32768
// CHECK-NEXT: [[RES2:%[a-z0-9]+]] = select i1 [[USE_MIN]], i39 -32768, i39 [[RES]]
// CHECK-NEXT: [[RES3:%[a-z0-9]+]] = trunc i39 [[RES2]] to i16
// CHECK-NEXT: store i16 [[RES3]], i16* %sa_sat, align 2
sa_sat = sa_sat + i;
// CHECK: [[SA_SAT:%[0-9]+]] = load i16, i16* %sa_sat, align 2
// CHECK-NEXT: [[I:%[0-9]+]] = load i32, i32* %ui, align 4
// CHECK-NEXT: [[SA_SAT_EXT:%[a-z0-9]+]] = sext i16 [[SA_SAT]] to i40
// CHECK-NEXT: [[I_EXT:%[a-z0-9]+]] = zext i32 [[I]] to i40
// CHECK-NEXT: [[I:%[a-z0-9]+]] = shl i40 [[I_EXT]], 7
// CHECK-NEXT: [[SUM:%[0-9]+]] = call i40 @llvm.sadd.sat.i40(i40 [[SA_SAT_EXT]], i40 [[I]])
// CHECK-NEXT: [[USE_MAX:%[0-9]+]] = icmp sgt i40 [[SUM]], 32767
// CHECK-NEXT: [[RES:%[a-z0-9]+]] = select i1 [[USE_MAX]], i40 32767, i40 [[SUM]]
// CHECK-NEXT: [[USE_MIN:%[0-9]+]] = icmp slt i40 [[RES]], -32768
// CHECK-NEXT: [[RES2:%[a-z0-9]+]] = select i1 [[USE_MIN]], i40 -32768, i40 [[RES]]
// CHECK-NEXT: [[RES3:%[a-z0-9]+]] = trunc i40 [[RES2]] to i16
// CHECK-NEXT: store i16 [[RES3]], i16* %sa_sat, align 2
sa_sat = sa_sat + ui;
// CHECK: [[UF_SAT:%[0-9]+]] = load i16, i16* %uf_sat, align 2
// CHECK-NEXT: [[UF_SAT2:%[0-9]+]] = load i16, i16* %uf_sat, align 2
// SIGNED-NEXT: [[SUM:%[0-9]+]] = call i16 @llvm.uadd.sat.i16(i16 [[UF_SAT]], i16 [[UF_SAT2]])
// SIGNED-NEXT: store i16 [[SUM]], i16* %uf_sat, align 2
// UNSIGNED-NEXT: [[UF_SAT_TRUNC:%[a-z0-9]+]] = trunc i16 [[UF_SAT]] to i15
// UNSIGNED-NEXT: [[UF_SAT_TRUNC2:%[a-z0-9]+]] = trunc i16 [[UF_SAT2]] to i15
// UNSIGNED-NEXT: [[SUM:%[0-9]+]] = call i15 @llvm.uadd.sat.i15(i15 [[UF_SAT_TRUNC]], i15 [[UF_SAT_TRUNC2]])
// UNSIGNED-NEXT: [[SUM_EXT:%[a-z0-9]+]] = zext i15 [[SUM]] to i16
// UNSIGNED-NEXT: store i16 [[SUM_EXT]], i16* %uf_sat, align 2
uf_sat = uf_sat + uf_sat;
// CHECK: [[USA_SAT:%[0-9]+]] = load i16, i16* %usa_sat, align 2
// CHECK-NEXT: [[I:%[0-9]+]] = load i32, i32* %i, align 4
// SIGNED-NEXT: [[USA_SAT_RESIZE:%[a-z0-9]+]] = zext i16 [[USA_SAT]] to i40
// SIGNED-NEXT: [[I_RESIZE:%[a-z0-9]+]] = sext i32 [[I]] to i40
// SIGNED-NEXT: [[I_UPSCALE:%[a-z0-9]+]] = shl i40 [[I_RESIZE]], 8
// SIGNED-NEXT: [[SUM:%[0-9]+]] = call i40 @llvm.uadd.sat.i40(i40 [[USA_SAT_RESIZE]], i40 [[I_UPSCALE]])
// SIGNED-NEXT: [[USE_MAX:%[0-9]+]] = icmp sgt i40 [[SUM]], 65535
// SIGNED-NEXT: [[RESULT:%[a-z0-9]+]] = select i1 [[USE_MAX]], i40 65535, i40 [[SUM]]
// SIGNED-NEXT: [[USE_MIN:%[0-9]+]] = icmp slt i40 [[RESULT]], 0
// SIGNED-NEXT: [[RESULT2:%[a-z0-9]+]] = select i1 [[USE_MIN]], i40 0, i40 [[RESULT]]
// SIGNED-NEXT: [[RESULT:%[a-z0-9]+]] = trunc i40 [[RESULT2]] to i16
// UNSIGNED-NEXT: [[USA_SAT_RESIZE:%[a-z0-9]+]] = zext i16 [[USA_SAT]] to i39
// UNSIGNED-NEXT: [[I_RESIZE:%[a-z0-9]+]] = sext i32 [[I]] to i39
// UNSIGNED-NEXT: [[I_UPSCALE:%[a-z0-9]+]] = shl i39 [[I_RESIZE]], 7
// UNSIGNED-NEXT: [[SUM:%[0-9]+]] = call i39 @llvm.uadd.sat.i39(i39 [[USA_SAT_RESIZE]], i39 [[I_UPSCALE]])
// UNSIGNED-NEXT: [[USE_MAX:%[0-9]+]] = icmp sgt i39 [[SUM]], 32767
// UNSIGNED-NEXT: [[RESULT:%[a-z0-9]+]] = select i1 [[USE_MAX]], i39 32767, i39 [[SUM]]
// UNSIGNED-NEXT: [[USE_MIN:%[0-9]+]] = icmp slt i39 [[RESULT]], 0
// UNSIGNED-NEXT: [[RESULT2:%[a-z0-9]+]] = select i1 [[USE_MIN]], i39 0, i39 [[RESULT]]
// UNSIGNED-NEXT: [[RESULT:%[a-z0-9]+]] = trunc i39 [[RESULT2]] to i16
// CHECK-NEXT: store i16 [[RESULT]], i16* %usa_sat, align 2
usa_sat = usa_sat + i;
}