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llvm-project/llvm/test/CodeGen/SystemZ/vec-const-08.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, v8i16 version.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
; Test a byte-granularity replicate with the lowest useful value.
define <8 x i16> @f1() {
; CHECK-LABEL: f1:
; CHECK: vrepib %v24, 1
; CHECK: br %r14
ret <8 x i16> <i16 257, i16 257, i16 257, i16 257,
i16 257, i16 257, i16 257, i16 257>
}
; Test a byte-granularity replicate with an arbitrary value.
define <8 x i16> @f2() {
; CHECK-LABEL: f2:
; CHECK: vrepib %v24, -55
; CHECK: br %r14
ret <8 x i16> <i16 51657, i16 51657, i16 51657, i16 51657,
i16 51657, i16 51657, i16 51657, i16 51657>
}
; Test a byte-granularity replicate with the highest useful value.
define <8 x i16> @f3() {
; CHECK-LABEL: f3:
; CHECK: vrepib %v24, -2
; CHECK: br %r14
ret <8 x i16> <i16 -258, i16 -258, i16 -258, i16 -258,
i16 -258, i16 -258, i16 -258, i16 -258>
}
; Test a halfword-granularity replicate with the lowest useful value.
define <8 x i16> @f4() {
; CHECK-LABEL: f4:
; CHECK: vrepih %v24, 1
; CHECK: br %r14
ret <8 x i16> <i16 1, i16 1, i16 1, i16 1,
i16 1, i16 1, i16 1, i16 1>
}
; Test a halfword-granularity replicate with an arbitrary value.
define <8 x i16> @f5() {
; CHECK-LABEL: f5:
; CHECK: vrepih %v24, 25650
; CHECK: br %r14
ret <8 x i16> <i16 25650, i16 25650, i16 25650, i16 25650,
i16 25650, i16 25650, i16 25650, i16 25650>
}
; Test a halfword-granularity replicate with the highest useful value.
define <8 x i16> @f6() {
; CHECK-LABEL: f6:
; CHECK: vrepih %v24, -2
; CHECK: br %r14
ret <8 x i16> <i16 65534, i16 65534, i16 65534, i16 65534,
i16 65534, i16 65534, i16 65534, i16 65534>
}
; Test a word-granularity replicate with the lowest useful positive value.
define <8 x i16> @f7() {
; CHECK-LABEL: f7:
; CHECK: vrepif %v24, 1
; CHECK: br %r14
ret <8 x i16> <i16 0, i16 1, i16 0, i16 1,
i16 0, i16 1, i16 0, i16 1>
}
; Test a word-granularity replicate with the highest in-range value.
define <8 x i16> @f8() {
; CHECK-LABEL: f8:
; CHECK: vrepif %v24, 32767
; CHECK: br %r14
ret <8 x i16> <i16 0, i16 32767, i16 0, i16 32767,
i16 0, i16 32767, i16 0, i16 32767>
}
; Test a word-granularity replicate with the next highest value.
; This cannot use VREPIF.
define <8 x i16> @f9() {
; CHECK-LABEL: f9:
; CHECK-NOT: vrepif
; CHECK: br %r14
ret <8 x i16> <i16 0, i16 32768, i16 0, i16 32768,
i16 0, i16 32768, i16 0, i16 32768>
}
; Test a word-granularity replicate with the lowest in-range value.
define <8 x i16> @f10() {
; CHECK-LABEL: f10:
; CHECK: vrepif %v24, -32768
; CHECK: br %r14
ret <8 x i16> <i16 -1, i16 -32768, i16 -1, i16 -32768,
i16 -1, i16 -32768, i16 -1, i16 -32768>
}
; Test a word-granularity replicate with the next lowest value.
; This cannot use VREPIF.
define <8 x i16> @f11() {
; CHECK-LABEL: f11:
; CHECK-NOT: vrepif
; CHECK: br %r14
ret <8 x i16> <i16 -1, i16 -32769, i16 -1, i16 -32769,
i16 -1, i16 -32769, i16 -1, i16 -32769>
}
; Test a word-granularity replicate with the highest useful negative value.
define <8 x i16> @f12() {
; CHECK-LABEL: f12:
; CHECK: vrepif %v24, -2
; CHECK: br %r14
ret <8 x i16> <i16 -1, i16 -2, i16 -1, i16 -2,
i16 -1, i16 -2, i16 -1, i16 -2>
}
; Test a doubleword-granularity replicate with the lowest useful positive
; value.
define <8 x i16> @f13() {
; CHECK-LABEL: f13:
; CHECK: vrepig %v24, 1
; CHECK: br %r14
ret <8 x i16> <i16 0, i16 0, i16 0, i16 1,
i16 0, i16 0, i16 0, i16 1>
}
; Test a doubleword-granularity replicate with the highest in-range value.
define <8 x i16> @f14() {
; CHECK-LABEL: f14:
; CHECK: vrepig %v24, 32767
; CHECK: br %r14
ret <8 x i16> <i16 0, i16 0, i16 0, i16 32767,
i16 0, i16 0, i16 0, i16 32767>
}
; Test a doubleword-granularity replicate with the next highest value.
; This cannot use VREPIG.
define <8 x i16> @f15() {
; CHECK-LABEL: f15:
; CHECK-NOT: vrepig
; CHECK: br %r14
ret <8 x i16> <i16 0, i16 0, i16 0, i16 32768,
i16 0, i16 0, i16 0, i16 32768>
}
; Test a doubleword-granularity replicate with the lowest in-range value.
define <8 x i16> @f16() {
; CHECK-LABEL: f16:
; CHECK: vrepig %v24, -32768
; CHECK: br %r14
ret <8 x i16> <i16 -1, i16 -1, i16 -1, i16 -32768,
i16 -1, i16 -1, i16 -1, i16 -32768>
}
; Test a doubleword-granularity replicate with the next lowest value.
; This cannot use VREPIG.
define <8 x i16> @f17() {
; CHECK-LABEL: f17:
; CHECK-NOT: vrepig
; CHECK: br %r14
ret <8 x i16> <i16 -1, i16 -1, i16 -1, i16 -32769,
i16 -1, i16 -1, i16 -1, i16 -32769>
}
; Test a doubleword-granularity replicate with the highest useful negative
; value.
define <8 x i16> @f18() {
; CHECK-LABEL: f18:
; CHECK: vrepig %v24, -2
; CHECK: br %r14
ret <8 x i16> <i16 -1, i16 -1, i16 -1, i16 -2,
i16 -1, i16 -1, i16 -1, i16 -2>
}
; Repeat f14 with undefs optimistically treated as 0.
define <8 x i16> @f19() {
; CHECK-LABEL: f19:
; CHECK: vrepig %v24, 32767
; CHECK: br %r14
ret <8 x i16> <i16 0, i16 undef, i16 0, i16 32767,
i16 undef, i16 0, i16 undef, i16 32767>
}
; Repeat f18 with undefs optimistically treated as -1.
define <8 x i16> @f20() {
; CHECK-LABEL: f20:
; CHECK: vrepig %v24, -2
; CHECK: br %r14
ret <8 x i16> <i16 -1, i16 -1, i16 undef, i16 -2,
i16 undef, i16 undef, i16 -1, i16 -2>
}