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David Sherwood 1652ed61e6 [SVE][CodeGen] Add README for SVE-related warnings in tests
I have added a new file:

  llvm/test/CodeGen/AArch64/README

that describes what to do in the event one of the SVE codegen tests
fails the warnings check. In addition, I've added comments to all
the relevant SVE tests pointing users at the README file.

Differential Revision: https://reviews.llvm.org/D83467
2020-07-14 08:31:10 +01:00

144 lines
5.6 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=aarch64-linux-gnu -mattr=+sve < %s 2>%t | FileCheck %s
; RUN: FileCheck --check-prefix=WARN --allow-empty %s <%t
; If this check fails please read test/CodeGen/AArch64/README for instructions on how to resolve it.
; WARN-NOT: warning
define <vscale x 2 x i64>* @scalar_of_scalable_1(<vscale x 2 x i64>* %base) {
; CHECK-LABEL: scalar_of_scalable_1:
; CHECK: // %bb.0:
; CHECK-NEXT: rdvl x8, #4
; CHECK-NEXT: add x0, x0, x8
; CHECK-NEXT: ret
%d = getelementptr <vscale x 2 x i64>, <vscale x 2 x i64>* %base, i64 4
ret <vscale x 2 x i64>* %d
}
define <vscale x 2 x i64>* @scalar_of_scalable_2(<vscale x 2 x i64>* %base, i64 %offset) {
; CHECK-LABEL: scalar_of_scalable_2:
; CHECK: // %bb.0:
; CHECK-NEXT: rdvl x8, #1
; CHECK-NEXT: madd x0, x1, x8, x0
; CHECK-NEXT: ret
%d = getelementptr <vscale x 2 x i64>, <vscale x 2 x i64>* %base, i64 %offset
ret <vscale x 2 x i64>* %d
}
define <vscale x 2 x i32>* @scalar_of_scalable_3(<vscale x 2 x i32>* %base, i64 %offset) {
; CHECK-LABEL: scalar_of_scalable_3:
; CHECK: // %bb.0:
; CHECK-NEXT: cnth x8
; CHECK-NEXT: madd x0, x1, x8, x0
; CHECK-NEXT: ret
%d = getelementptr <vscale x 2 x i32>, <vscale x 2 x i32>* %base, i64 %offset
ret <vscale x 2 x i32>* %d
}
define <2 x <vscale x 2 x i64>*> @fixed_of_scalable_1(<vscale x 2 x i64>* %base) {
; CHECK-LABEL: fixed_of_scalable_1:
; CHECK: // %bb.0:
; CHECK-NEXT: rdvl x8, #1
; CHECK-NEXT: dup v0.2d, x8
; CHECK-NEXT: dup v1.2d, x0
; CHECK-NEXT: add v0.2d, v1.2d, v0.2d
; CHECK-NEXT: ret
%d = getelementptr <vscale x 2 x i64>, <vscale x 2 x i64>* %base, <2 x i64> <i64 1, i64 1>
ret <2 x <vscale x 2 x i64>*> %d
}
define <2 x <vscale x 2 x i64>*> @fixed_of_scalable_2(<2 x <vscale x 2 x i64>*> %base) {
; CHECK-LABEL: fixed_of_scalable_2:
; CHECK: // %bb.0:
; CHECK-NEXT: rdvl x8, #1
; CHECK-NEXT: dup v1.2d, x8
; CHECK-NEXT: add v0.2d, v0.2d, v1.2d
; CHECK-NEXT: ret
%d = getelementptr <vscale x 2 x i64>, <2 x <vscale x 2 x i64>*> %base, <2 x i64> <i64 1, i64 1>
ret <2 x <vscale x 2 x i64>*> %d
}
define <vscale x 2 x i8*> @scalable_of_fixed_1(i8* %base) {
; CHECK-LABEL: scalable_of_fixed_1:
; CHECK: // %bb.0:
; CHECK-NEXT: mov z0.d, x0
; CHECK-NEXT: add z0.d, z0.d, #1 // =0x1
; CHECK-NEXT: ret
%idx = shufflevector <vscale x 2 x i64> insertelement (<vscale x 2 x i64> undef, i64 1, i32 0), <vscale x 2 x i64> zeroinitializer, <vscale x 2 x i32> zeroinitializer
%d = getelementptr i8, i8* %base, <vscale x 2 x i64> %idx
ret <vscale x 2 x i8*> %d
}
define <vscale x 2 x i8*> @scalable_of_fixed_2(<vscale x 2 x i8*> %base) {
; CHECK-LABEL: scalable_of_fixed_2:
; CHECK: // %bb.0:
; CHECK-NEXT: add z0.d, z0.d, #1 // =0x1
; CHECK-NEXT: ret
%idx = shufflevector <vscale x 2 x i64> insertelement (<vscale x 2 x i64> undef, i64 1, i32 0), <vscale x 2 x i64> zeroinitializer, <vscale x 2 x i32> zeroinitializer
%d = getelementptr i8, <vscale x 2 x i8*> %base, <vscale x 2 x i64> %idx
ret <vscale x 2 x i8*> %d
}
define <vscale x 2 x i8*> @scalable_of_fixed_3(i8* %base, <vscale x 2 x i64> %idx) {
; CHECK-LABEL: scalable_of_fixed_3:
; CHECK: // %bb.0:
; CHECK-NEXT: mov z1.d, x0
; CHECK-NEXT: add z0.d, z1.d, z0.d
; CHECK-NEXT: ret
%d = getelementptr i8, i8* %base, <vscale x 2 x i64> %idx
ret <vscale x 2 x i8*> %d
}
define <vscale x 2 x i8*> @scalable_of_fixed_4(i8* %base, <vscale x 2 x i32> %idx) {
; CHECK-LABEL: scalable_of_fixed_4:
; CHECK: // %bb.0:
; CHECK-NEXT: ptrue p0.d
; CHECK-NEXT: sxtw z0.d, p0/m, z0.d
; CHECK-NEXT: mov z1.d, x0
; CHECK-NEXT: add z0.d, z1.d, z0.d
; CHECK-NEXT: ret
%d = getelementptr i8, i8* %base, <vscale x 2 x i32> %idx
ret <vscale x 2 x i8*> %d
}
define <vscale x 2 x <vscale x 2 x i64>*> @scalable_of_scalable_1(<vscale x 2 x i64>* %base) {
; CHECK-LABEL: scalable_of_scalable_1:
; CHECK: // %bb.0:
; CHECK-NEXT: rdvl x8, #1
; CHECK-NEXT: mov z1.d, x8
; CHECK-NEXT: mov z0.d, x0
; CHECK-NEXT: mul z1.d, z1.d, #1
; CHECK-NEXT: add z0.d, z0.d, z1.d
; CHECK-NEXT: ret
%idx = shufflevector <vscale x 2 x i64> insertelement (<vscale x 2 x i64> undef, i64 1, i32 0), <vscale x 2 x i64> zeroinitializer, <vscale x 2 x i32> zeroinitializer
%d = getelementptr <vscale x 2 x i64>, <vscale x 2 x i64>* %base, <vscale x 2 x i64> %idx
ret <vscale x 2 x <vscale x 2 x i64>*> %d
}
define <vscale x 2 x <vscale x 2 x i64>*> @scalable_of_scalable_2(<vscale x 2 x <vscale x 2 x i64>*> %base) {
; CHECK-LABEL: scalable_of_scalable_2:
; CHECK: // %bb.0:
; CHECK-NEXT: rdvl x8, #1
; CHECK-NEXT: mov z1.d, x8
; CHECK-NEXT: mul z1.d, z1.d, #1
; CHECK-NEXT: add z0.d, z0.d, z1.d
; CHECK-NEXT: ret
%idx = shufflevector <vscale x 2 x i64> insertelement (<vscale x 2 x i64> undef, i64 1, i32 0), <vscale x 2 x i64> zeroinitializer, <vscale x 2 x i32> zeroinitializer
%d = getelementptr <vscale x 2 x i64>, <vscale x 2 x <vscale x 2 x i64>*> %base, <vscale x 2 x i64> %idx
ret <vscale x 2 x <vscale x 2 x i64>*> %d
}
define <vscale x 2 x <vscale x 2 x i64>*> @scalable_of_scalable_3(<vscale x 2 x <vscale x 2 x i64>*> %base, <vscale x 2 x i32> %idx) {
; CHECK-LABEL: scalable_of_scalable_3:
; CHECK: // %bb.0:
; CHECK-NEXT: ptrue p0.d
; CHECK-NEXT: rdvl x8, #1
; CHECK-NEXT: sxtw z1.d, p0/m, z1.d
; CHECK-NEXT: mov z2.d, x8
; CHECK-NEXT: mul z1.d, p0/m, z1.d, z2.d
; CHECK-NEXT: add z0.d, z0.d, z1.d
; CHECK-NEXT: ret
%d = getelementptr <vscale x 2 x i64>, <vscale x 2 x <vscale x 2 x i64>*> %base, <vscale x 2 x i32> %idx
ret <vscale x 2 x <vscale x 2 x i64>*> %d
}