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llvm-project/llvm/test/CodeGen/SystemZ/vec-const-13.ll

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[SystemZ] Add CodeGen support for integer vector types This the first of a series of patches to add CodeGen support exploiting the instructions of the z13 vector facility. This patch adds support for the native integer vector types (v16i8, v8i16, v4i32, v2i64). When the vector facility is present, we default to the new vector ABI. This is characterized by two major differences: - Vector types are passed/returned in vector registers (except for unnamed arguments of a variable-argument list function). - Vector types are at most 8-byte aligned. The reason for the choice of 8-byte vector alignment is that the hardware is able to efficiently load vectors at 8-byte alignment, and the ABI only guarantees 8-byte alignment of the stack pointer, so requiring any higher alignment for vectors would require dynamic stack re-alignment code. However, for compatibility with old code that may use vector types, when *not* using the vector facility, the old alignment rules (vector types are naturally aligned) remain in use. These alignment rules are not only implemented at the C language level (implemented in clang), but also at the LLVM IR level. This is done by selecting a different DataLayout string depending on whether the vector ABI is in effect or not. Based on a patch by Richard Sandiford. llvm-svn: 236521
2015-05-06 03:25:42 +08:00
; Test vector replicates that use VECTOR GENERATE MASK, v16i8 version.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
; Test a word-granularity replicate with the lowest value that cannot use
; VREPIF.
define <16 x i8> @f1() {
; CHECK-LABEL: f1:
; CHECK: vgmf %v24, 16, 16
; CHECK: br %r14
ret <16 x i8> <i8 0, i8 0, i8 128, i8 0,
i8 0, i8 0, i8 128, i8 0,
i8 0, i8 0, i8 128, i8 0,
i8 0, i8 0, i8 128, i8 0>
}
; Test a word-granularity replicate that has the lower 17 bits set.
define <16 x i8> @f2() {
; CHECK-LABEL: f2:
; CHECK: vgmf %v24, 15, 31
; CHECK: br %r14
ret <16 x i8> <i8 0, i8 1, i8 255, i8 255,
i8 0, i8 1, i8 255, i8 255,
i8 0, i8 1, i8 255, i8 255,
i8 0, i8 1, i8 255, i8 255>
}
; Test a word-granularity replicate that has the upper 15 bits set.
define <16 x i8> @f3() {
; CHECK-LABEL: f3:
; CHECK: vgmf %v24, 0, 14
; CHECK: br %r14
ret <16 x i8> <i8 255, i8 254, i8 0, i8 0,
i8 255, i8 254, i8 0, i8 0,
i8 255, i8 254, i8 0, i8 0,
i8 255, i8 254, i8 0, i8 0>
}
; Test a word-granularity replicate that has middle bits set.
define <16 x i8> @f4() {
; CHECK-LABEL: f4:
; CHECK: vgmf %v24, 12, 17
; CHECK: br %r14
ret <16 x i8> <i8 0, i8 15, i8 192, i8 0,
i8 0, i8 15, i8 192, i8 0,
i8 0, i8 15, i8 192, i8 0,
i8 0, i8 15, i8 192, i8 0>
}
; Test a word-granularity replicate with a wrap-around mask.
define <16 x i8> @f5() {
; CHECK-LABEL: f5:
; CHECK: vgmf %v24, 17, 15
; CHECK: br %r14
ret <16 x i8> <i8 255, i8 255, i8 127, i8 255,
i8 255, i8 255, i8 127, i8 255,
i8 255, i8 255, i8 127, i8 255,
i8 255, i8 255, i8 127, i8 255>
}
; Test a doubleword-granularity replicate with the lowest value that cannot
; use VREPIG.
define <16 x i8> @f6() {
; CHECK-LABEL: f6:
; CHECK: vgmg %v24, 48, 48
; CHECK: br %r14
ret <16 x i8> <i8 0, i8 0, i8 0, i8 0,
i8 0, i8 0, i8 128, i8 0,
i8 0, i8 0, i8 0, i8 0,
i8 0, i8 0, i8 128, i8 0>
}
; Test a doubleword-granularity replicate that has the lower 22 bits set.
define <16 x i8> @f7() {
; CHECK-LABEL: f7:
; CHECK: vgmg %v24, 42, 63
; CHECK: br %r14
ret <16 x i8> <i8 0, i8 0, i8 0, i8 0,
i8 0, i8 63, i8 255, i8 255,
i8 0, i8 0, i8 0, i8 0,
i8 0, i8 63, i8 255, i8 255>
}
; Test a doubleword-granularity replicate that has the upper 45 bits set.
define <16 x i8> @f8() {
; CHECK-LABEL: f8:
; CHECK: vgmg %v24, 0, 44
; CHECK: br %r14
ret <16 x i8> <i8 255, i8 255, i8 255, i8 255,
i8 255, i8 248, i8 0, i8 0,
i8 255, i8 255, i8 255, i8 255,
i8 255, i8 248, i8 0, i8 0>
}
; Test a doubleword-granularity replicate that has middle bits set.
define <16 x i8> @f9() {
; CHECK-LABEL: f9:
; CHECK: vgmg %v24, 31, 42
; CHECK: br %r14
ret <16 x i8> <i8 0, i8 0, i8 0, i8 1,
i8 255, i8 224, i8 0, i8 0,
i8 0, i8 0, i8 0, i8 1,
i8 255, i8 224, i8 0, i8 0>
}
; Test a doubleword-granularity replicate with a wrap-around mask.
define <16 x i8> @f10() {
; CHECK-LABEL: f10:
; CHECK: vgmg %v24, 18, 0
; CHECK: br %r14
ret <16 x i8> <i8 128, i8 0, i8 63, i8 255,
i8 255, i8 255, i8 255, i8 255,
i8 128, i8 0, i8 63, i8 255,
i8 255, i8 255, i8 255, i8 255>
}
; Retest f1 with arbitrary undefs instead of 0s.
define <16 x i8> @f11() {
; CHECK-LABEL: f11:
; CHECK: vgmf %v24, 16, 16
; CHECK: br %r14
ret <16 x i8> <i8 0, i8 undef, i8 128, i8 0,
i8 0, i8 0, i8 128, i8 undef,
i8 undef, i8 0, i8 128, i8 0,
i8 undef, i8 undef, i8 128, i8 0>
}
; Try a case where we want consistent undefs to be treated as 0.
define <16 x i8> @f12() {
; CHECK-LABEL: f12:
; CHECK: vgmf %v24, 15, 23
; CHECK: br %r14
ret <16 x i8> <i8 undef, i8 1, i8 255, i8 0,
i8 undef, i8 1, i8 255, i8 0,
i8 undef, i8 1, i8 255, i8 0,
i8 undef, i8 1, i8 255, i8 0>
}
; ...and again with the lower bits of the replicated constant.
define <16 x i8> @f13() {
; CHECK-LABEL: f13:
; CHECK: vgmf %v24, 15, 22
; CHECK: br %r14
ret <16 x i8> <i8 0, i8 1, i8 254, i8 undef,
i8 0, i8 1, i8 254, i8 undef,
i8 0, i8 1, i8 254, i8 undef,
i8 0, i8 1, i8 254, i8 undef>
}
; Try a case where we want consistent undefs to be treated as -1.
define <16 x i8> @f14() {
; CHECK-LABEL: f14:
; CHECK: vgmf %v24, 28, 8
; CHECK: br %r14
ret <16 x i8> <i8 undef, i8 128, i8 0, i8 15,
i8 undef, i8 128, i8 0, i8 15,
i8 undef, i8 128, i8 0, i8 15,
i8 undef, i8 128, i8 0, i8 15>
}
; ...and again with the lower bits of the replicated constant.
define <16 x i8> @f15() {
; CHECK-LABEL: f15:
; CHECK: vgmf %v24, 18, 3
; CHECK: br %r14
ret <16 x i8> <i8 240, i8 0, i8 63, i8 undef,
i8 240, i8 0, i8 63, i8 undef,
i8 240, i8 0, i8 63, i8 undef,
i8 240, i8 0, i8 63, i8 undef>
}
; Repeat f9 with arbitrary undefs.
define <16 x i8> @f16() {
; CHECK-LABEL: f16:
; CHECK: vgmg %v24, 31, 42
; CHECK: br %r14
ret <16 x i8> <i8 undef, i8 0, i8 undef, i8 1,
i8 255, i8 undef, i8 0, i8 0,
i8 0, i8 0, i8 0, i8 1,
i8 undef, i8 224, i8 undef, i8 undef>
}
; Try a case where we want some consistent undefs to be treated as 0
; and some to be treated as 255.
define <16 x i8> @f17() {
; CHECK-LABEL: f17:
; CHECK: vgmg %v24, 23, 35
; CHECK: br %r14
ret <16 x i8> <i8 0, i8 undef, i8 1, i8 undef,
i8 240, i8 undef, i8 0, i8 0,
i8 0, i8 undef, i8 1, i8 undef,
i8 240, i8 undef, i8 0, i8 0>
}