[ARM] Add test for MVE and no floats. NFC

Adds a simple test that MVE with no floating point will be promoted correctly
to software float calls.

llvm-svn: 365496

Author: davemgreen

llvm/test/CodeGen/Thumb2/mve-nofloat.ll

@@ -0,0 +1,139 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=thumbv8.1m.main-none-eabi -mattr=+mve,-vfp2 -o - %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NOFP
+; RUN: llc -mtriple=thumbv8.1m.main-none-eabi -mattr=+mve.fp -o - %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-FP %s
+
+; This file tests tests that we expand floating point operations correctly,
+; even if we do not have an fpu.
+
+define arm_aapcs_vfpcc <8 x half> @vector_add_f16(<8 x half> %lhs, <8 x half> %rhs) {
+; CHECK-NOFP-LABEL: vector_add_f16:
+; CHECK-NOFP:       @ %bb.0: @ %entry
+; CHECK-NOFP-NEXT:    .save {r4, lr}
+; CHECK-NOFP-NEXT:    push {r4, lr}
+; CHECK-NOFP-NEXT:    .vsave {d8, d9, d10, d11, d12, d13}
+; CHECK-NOFP-NEXT:    vpush {d8, d9, d10, d11, d12, d13}
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q1[0]
+; CHECK-NOFP-NEXT:    vmov q5, q1
+; CHECK-NOFP-NEXT:    vmov q4, q0
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r4, r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q4[0]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r1, r4
+; CHECK-NOFP-NEXT:    bl __aeabi_fadd
+; CHECK-NOFP-NEXT:    bl __aeabi_f2h
+; CHECK-NOFP-NEXT:    vmov.16 q6[0], r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q5[1]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r4, r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q4[1]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r1, r4
+; CHECK-NOFP-NEXT:    bl __aeabi_fadd
+; CHECK-NOFP-NEXT:    bl __aeabi_f2h
+; CHECK-NOFP-NEXT:    vmov.16 q6[1], r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q5[2]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r4, r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q4[2]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r1, r4
+; CHECK-NOFP-NEXT:    bl __aeabi_fadd
+; CHECK-NOFP-NEXT:    bl __aeabi_f2h
+; CHECK-NOFP-NEXT:    vmov.16 q6[2], r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q5[3]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r4, r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q4[3]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r1, r4
+; CHECK-NOFP-NEXT:    bl __aeabi_fadd
+; CHECK-NOFP-NEXT:    bl __aeabi_f2h
+; CHECK-NOFP-NEXT:    vmov.16 q6[3], r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q5[4]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r4, r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q4[4]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r1, r4
+; CHECK-NOFP-NEXT:    bl __aeabi_fadd
+; CHECK-NOFP-NEXT:    bl __aeabi_f2h
+; CHECK-NOFP-NEXT:    vmov.16 q6[4], r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q5[5]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r4, r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q4[5]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r1, r4
+; CHECK-NOFP-NEXT:    bl __aeabi_fadd
+; CHECK-NOFP-NEXT:    bl __aeabi_f2h
+; CHECK-NOFP-NEXT:    vmov.16 q6[5], r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q5[6]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r4, r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q4[6]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r1, r4
+; CHECK-NOFP-NEXT:    bl __aeabi_fadd
+; CHECK-NOFP-NEXT:    bl __aeabi_f2h
+; CHECK-NOFP-NEXT:    vmov.16 q6[6], r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q5[7]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r4, r0
+; CHECK-NOFP-NEXT:    vmov.u16 r0, q4[7]
+; CHECK-NOFP-NEXT:    bl __aeabi_h2f
+; CHECK-NOFP-NEXT:    mov r1, r4
+; CHECK-NOFP-NEXT:    bl __aeabi_fadd
+; CHECK-NOFP-NEXT:    bl __aeabi_f2h
+; CHECK-NOFP-NEXT:    vmov.16 q6[7], r0
+; CHECK-NOFP-NEXT:    vmov q0, q6
+; CHECK-NOFP-NEXT:    vpop {d8, d9, d10, d11, d12, d13}
+; CHECK-NOFP-NEXT:    pop {r4, pc}
+;
+; CHECK-FP-LABEL: vector_add_f16:
+; CHECK-FP:       @ %bb.0: @ %entry
+; CHECK-FP-NEXT:    vadd.f16 q0, q0, q1
+; CHECK-FP-NEXT:    bx lr
+entry:
+  %sum = fadd <8 x half> %lhs, %rhs
+  ret <8 x half> %sum
+}
+
+define arm_aapcs_vfpcc <4 x float> @vector_add_f32(<4 x float> %lhs, <4 x float> %rhs) {
+; CHECK-NOFP-LABEL: vector_add_f32:
+; CHECK-NOFP:       @ %bb.0: @ %entry
+; CHECK-NOFP-NEXT:    .save {r7, lr}
+; CHECK-NOFP-NEXT:    push {r7, lr}
+; CHECK-NOFP-NEXT:    .vsave {d8, d9, d10, d11, d12, d13}
+; CHECK-NOFP-NEXT:    vpush {d8, d9, d10, d11, d12, d13}
+; CHECK-NOFP-NEXT:    vmov q4, q1
+; CHECK-NOFP-NEXT:    vmov q6, q0
+; CHECK-NOFP-NEXT:    vmov r0, s27
+; CHECK-NOFP-NEXT:    vmov r1, s19
+; CHECK-NOFP-NEXT:    bl __aeabi_fadd
+; CHECK-NOFP-NEXT:    vmov s23, r0
+; CHECK-NOFP-NEXT:    vmov r0, s26
+; CHECK-NOFP-NEXT:    vmov r1, s18
+; CHECK-NOFP-NEXT:    bl __aeabi_fadd
+; CHECK-NOFP-NEXT:    vmov s22, r0
+; CHECK-NOFP-NEXT:    vmov r0, s25
+; CHECK-NOFP-NEXT:    vmov r1, s17
+; CHECK-NOFP-NEXT:    bl __aeabi_fadd
+; CHECK-NOFP-NEXT:    vmov s21, r0
+; CHECK-NOFP-NEXT:    vmov r0, s24
+; CHECK-NOFP-NEXT:    vmov r1, s16
+; CHECK-NOFP-NEXT:    bl __aeabi_fadd
+; CHECK-NOFP-NEXT:    vmov s20, r0
+; CHECK-NOFP-NEXT:    vmov q0, q5
+; CHECK-NOFP-NEXT:    vpop {d8, d9, d10, d11, d12, d13}
+; CHECK-NOFP-NEXT:    pop {r7, pc}
+;
+; CHECK-FP-LABEL: vector_add_f32:
+; CHECK-FP:       @ %bb.0: @ %entry
+; CHECK-FP-NEXT:    vadd.f32 q0, q0, q1
+; CHECK-FP-NEXT:    bx lr
+entry:
+  %sum = fadd <4 x float> %lhs, %rhs
+  ret <4 x float> %sum
+}
+