mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-11-03 14:21:30 +00:00
538287dea2
The ABI allows sub-128 vectors to be passed and returned in registers, with the vector occupying the upper part of a register. We therefore want to legalize those types by widening the vector rather than promoting the elements. The patch includes some simple tests for sub-128 vectors and also tests that we can recognize various pack sequences, some of which use sub-128 vectors as temporary results. One of these forms is based on the pack sequences generated by llvmpipe when no intrinsics are used. Signed unpacks are recognized as BUILD_VECTORs whose elements are individually sign-extended. Unsigned unpacks can have the equivalent form with zero extension, but they also occur as shuffles in which some elements are zero. Based on a patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236525 91177308-0d34-0410-b5e6-96231b3b80d8
80 lines
1.9 KiB
LLVM
80 lines
1.9 KiB
LLVM
; Test vector byte masks, v8i16 version.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
|
|
|
|
; Test an all-zeros vector.
|
|
define <8 x i16> @f1() {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: vgbm %v24, 0
|
|
; CHECK: br %r14
|
|
ret <8 x i16> zeroinitializer
|
|
}
|
|
|
|
; Test an all-ones vector.
|
|
define <8 x i16> @f2() {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: vgbm %v24, 65535
|
|
; 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 mixed vector (mask 0x8c76).
|
|
define <8 x i16> @f3() {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: vgbm %v24, 35958
|
|
; CHECK: br %r14
|
|
ret <8 x i16> <i16 65280, i16 0, i16 65535, i16 0,
|
|
i16 255, i16 65535, i16 255, i16 65280>
|
|
}
|
|
|
|
; Test that undefs are treated as zero.
|
|
define <8 x i16> @f4() {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: vgbm %v24, 35958
|
|
; CHECK: br %r14
|
|
ret <8 x i16> <i16 65280, i16 undef, i16 65535, i16 undef,
|
|
i16 255, i16 65535, i16 255, i16 65280>
|
|
}
|
|
|
|
; Test that we don't use VGBM if one of the bytes is not 0 or 0xff.
|
|
define <8 x i16> @f5() {
|
|
; CHECK-LABEL: f5:
|
|
; CHECK-NOT: vgbm
|
|
; CHECK: br %r14
|
|
ret <8 x i16> <i16 65280, i16 0, i16 65535, i16 0,
|
|
i16 255, i16 65535, i16 256, i16 65280>
|
|
}
|
|
|
|
; Test an all-zeros v2i16 that gets promoted to v8i16.
|
|
define <2 x i16> @f6() {
|
|
; CHECK-LABEL: f6:
|
|
; CHECK: vgbm %v24, 0
|
|
; CHECK: br %r14
|
|
ret <2 x i16> zeroinitializer
|
|
}
|
|
|
|
; Test a mixed v2i16 that gets promoted to v8i16 (mask 0xc000).
|
|
define <2 x i16> @f7() {
|
|
; CHECK-LABEL: f7:
|
|
; CHECK: vgbm %v24, 49152
|
|
; CHECK: br %r14
|
|
ret <2 x i16> <i16 65535, i16 0>
|
|
}
|
|
|
|
; Test an all-zeros v4i16 that gets promoted to v8i16.
|
|
define <4 x i16> @f8() {
|
|
; CHECK-LABEL: f8:
|
|
; CHECK: vgbm %v24, 0
|
|
; CHECK: br %r14
|
|
ret <4 x i16> zeroinitializer
|
|
}
|
|
|
|
; Test a mixed v4i16 that gets promoted to v8i16 (mask 0x7200).
|
|
define <4 x i16> @f9() {
|
|
; CHECK-LABEL: f9:
|
|
; CHECK: vgbm %v24, 29184
|
|
; CHECK: br %r14
|
|
ret <4 x i16> <i16 255, i16 65535, i16 0, i16 65280>
|
|
}
|