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[x86][sse4.1] Add pmin* instructions #186

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Nov 9, 2017
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[x86][sse4.1] Add pmin* instructions #186

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124 changes: 123 additions & 1 deletion src/x86/sse41.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -208,7 +208,7 @@ pub unsafe fn _mm_insert_epi64(a: i64x2, i: i64, imm8: u8) -> i64x2 {
a.replace((imm8 & 0b1) as u32, i)
}

/// Compare packed 8-bit integers in `a` and `b`,87 and return packed maximum
/// Compare packed 8-bit integers in `a` and `b` and return packed maximum
/// values in dst.
#[inline(always)]
#[target_feature = "+sse4.1"]
Expand Down Expand Up @@ -244,6 +244,42 @@ pub unsafe fn _mm_max_epu32(a: u32x4, b: u32x4) -> u32x4 {
pmaxud(a, b)
}

/// Compare packed 8-bit integers in `a` and `b` and return packed minimum
/// values in dst.
#[inline(always)]
#[target_feature = "+sse4.1"]
#[cfg_attr(test, assert_instr(pminsb))]
pub unsafe fn _mm_min_epi8(a: i8x16, b: i8x16) -> i8x16 {
pminsb(a, b)
}

/// Compare packed unsigned 16-bit integers in `a` and `b`, and return packed
/// minimum.
#[inline(always)]
#[target_feature = "+sse4.1"]
#[cfg_attr(test, assert_instr(pminuw))]
pub unsafe fn _mm_min_epu16(a: u16x8, b: u16x8) -> u16x8 {
pminuw(a, b)
}

/// Compare packed 32-bit integers in `a` and `b`, and return packed minimum
/// values.
#[inline(always)]
#[target_feature = "+sse4.1"]
#[cfg_attr(test, assert_instr(pminsd))]
pub unsafe fn _mm_min_epi32(a: i32x4, b: i32x4) -> i32x4 {
pminsd(a, b)
}

/// Compare packed unsigned 32-bit integers in `a` and `b`, and return packed
/// minimum values.
#[inline(always)]
#[target_feature = "+sse4.1"]
#[cfg_attr(test, assert_instr(pminud))]
pub unsafe fn _mm_min_epu32(a: u32x4, b: u32x4) -> u32x4 {
pminud(a, b)
}

/// Convert packed 32-bit integers from `a` and `b` to packed 16-bit integers
/// using unsigned saturation
#[inline(always)]
Expand Down Expand Up @@ -569,6 +605,14 @@ extern "C" {
fn pmaxsd(a: i32x4, b: i32x4) -> i32x4;
#[link_name = "llvm.x86.sse41.pmaxud"]
fn pmaxud(a: u32x4, b: u32x4) -> u32x4;
#[link_name = "llvm.x86.sse41.pminsb"]
fn pminsb(a: i8x16, b: i8x16) -> i8x16;
#[link_name = "llvm.x86.sse41.pminuw"]
fn pminuw(a: u16x8, b: u16x8) -> u16x8;
#[link_name = "llvm.x86.sse41.pminsd"]
fn pminsd(a: i32x4, b: i32x4) -> i32x4;
#[link_name = "llvm.x86.sse41.pminud"]
fn pminud(a: u32x4, b: u32x4) -> u32x4;
#[link_name = "llvm.x86.sse41.packusdw"]
fn packusdw(a: i32x4, b: i32x4) -> u16x8;
#[link_name = "llvm.x86.sse41.dppd"]
Expand Down Expand Up @@ -784,6 +828,84 @@ mod tests {
assert_eq!(r, e);
}

#[simd_test = "sse4.1"]
unsafe fn _mm_min_epi8_1() {
#[cfg_attr(rustfmt, rustfmt_skip)]
let a = i8x16::new(
1, 4, 5, 8, 9, 12, 13, 16,
17, 20, 21, 24, 25, 28, 29, 32,
);
#[cfg_attr(rustfmt, rustfmt_skip)]
let b = i8x16::new(
2, 3, 6, 7, 10, 11, 14, 15,
18, 19, 22, 23, 26, 27, 30, 31,
);
let r = sse41::_mm_min_epi8(a, b);
#[cfg_attr(rustfmt, rustfmt_skip)]
let e = i8x16::new(
1, 3, 5, 7, 9, 11, 13, 15,
17, 19, 21, 23, 25, 27, 29, 31,
);
assert_eq!(r, e);
}

#[simd_test = "sse4.1"]
unsafe fn _mm_min_epi8_2() {
#[cfg_attr(rustfmt, rustfmt_skip)]
let a = i8x16::new(
1, -4, -5, 8, -9, -12, 13, -16,
17, 20, 21, 24, 25, 28, 29, 32,
);
#[cfg_attr(rustfmt, rustfmt_skip)]
let b = i8x16::new(
2, -3, -6, 7, -10, -11, 14, -15,
18, 19, 22, 23, 26, 27, 30, 31,
);
let r = sse41::_mm_min_epi8(a, b);
#[cfg_attr(rustfmt, rustfmt_skip)]
let e = i8x16::new(
1, -4, -6, 7, -10, -12, 13, -16,
17, 19, 21, 23, 25, 27, 29, 31,
);
assert_eq!(r, e);
}

#[simd_test = "sse4.1"]
unsafe fn _mm_min_epu16() {
let a = u16x8::new(1, 4, 5, 8, 9, 12, 13, 16);
let b = u16x8::new(2, 3, 6, 7, 10, 11, 14, 15);
let r = sse41::_mm_min_epu16(a, b);
let e = u16x8::new(1, 3, 5, 7, 9, 11, 13, 15);
assert_eq!(r, e);
}

#[simd_test = "sse4.1"]
unsafe fn _mm_min_epi32_1() {
let a = i32x4::new(1, 4, 5, 8);
let b = i32x4::new(2, 3, 6, 7);
let r = sse41::_mm_min_epi32(a, b);
let e = i32x4::new(1, 3, 5, 7);
assert_eq!(r, e);
}

#[simd_test = "sse4.1"]
unsafe fn _mm_min_epi32_2() {
let a = i32x4::new(-1, 4, 5, -7);
let b = i32x4::new(-2, 3, -6, 8);
let r = sse41::_mm_min_epi32(a, b);
let e = i32x4::new(-2, 3, -6, -7);
assert_eq!(r, e);
}

#[simd_test = "sse4.1"]
unsafe fn _mm_min_epu32() {
let a = u32x4::new(1, 4, 5, 8);
let b = u32x4::new(2, 3, 6, 7);
let r = sse41::_mm_min_epu32(a, b);
let e = u32x4::new(1, 3, 5, 7);
assert_eq!(r, e);
}

#[simd_test = "sse4.1"]
unsafe fn _mm_packus_epi32() {
let a = i32x4::new(1, 2, 3, 4);
Expand Down