From 560a17f4e3f8019a108abb7848a4735c59a43be0 Mon Sep 17 00:00:00 2001
From: Pirama Arumuga Nainar <pirama@google.com>
Date: Wed, 20 May 2015 12:55:36 -0700
Subject: Update aosp/master LLVM with patches for fp16

Cherry-pick LLVM revisions r235191, r235215, r235220, r235341, r235363,
r235530, r235609, r235610, r237004

r235191 has a required bug-fix and the rest are all related to fp16.

Change-Id: I7fe8da5ffd8f2c06150885a54769abd18c3a04c6
(cherry picked from commit a18e6af1712fd41c4a705a19ad71f6e9ac7a4e68)
---
 test/CodeGen/ARM/fp16-promote.ll | 903 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 903 insertions(+)
 create mode 100644 test/CodeGen/ARM/fp16-promote.ll

(limited to 'test/CodeGen/ARM/fp16-promote.ll')

diff --git a/test/CodeGen/ARM/fp16-promote.ll b/test/CodeGen/ARM/fp16-promote.ll
new file mode 100644
index 0000000..e691c2b
--- /dev/null
+++ b/test/CodeGen/ARM/fp16-promote.ll
@@ -0,0 +1,903 @@
+; RUN: llc -asm-verbose=false < %s -mattr=+vfp3,+fp16 | FileCheck %s -check-prefix=CHECK-FP16 -check-prefix=CHECK-ALL
+; RUN: llc -asm-verbose=false < %s | FileCheck %s -check-prefix=CHECK-LIBCALL -check-prefix=CHECK-ALL
+
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-n32"
+target triple = "armv7-eabihf"
+
+; CHECK-FP16-LABEL: test_fadd:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vadd.f32
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_fadd:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vadd.f32
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_fadd(half* %p, half* %q) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %r = fadd half %a, %b
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_fsub:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vsub.f32
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_fsub:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vsub.f32
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_fsub(half* %p, half* %q) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %r = fsub half %a, %b
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_fmul:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vmul.f32
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_fmul
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vmul.f32
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_fmul(half* %p, half* %q) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %r = fmul half %a, %b
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_fdiv:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vdiv.f32
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_fdiv
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vdiv.f32
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_fdiv(half* %p, half* %q) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %r = fdiv half %a, %b
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_frem:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl fmodf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_frem
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl fmodf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_frem(half* %p, half* %q) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %r = frem half %a, %b
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-ALL-LABEL: test_load_store:
+; CHECK-ALL-NEXT: .fnstart
+; CHECK-ALL-NEXT: ldrh r0, [r0]
+; CHECK-ALL-NEXT: strh r0, [r1]
+; CHECK-ALL-NEXT: bx lr
+define void @test_load_store(half* %p, half* %q) #0 {
+  %a = load half, half* %p, align 2
+  store half %a, half* %q
+  ret void
+}
+
+; Testing only successfull compilation of function calls.  In ARM ABI, half
+; args and returns are handled as f32.
+
+declare half @test_callee(half %a, half %b) #0
+
+; CHECK-ALL-LABEL: test_call:
+; CHECK-ALL-NEXT: .fnstart
+; CHECK-ALL-NEXT: push {r11, lr}
+; CHECK-ALL-NEXT: bl test_callee
+; CHECK-ALL-NEXT: pop {r11, pc}
+define half @test_call(half %a, half %b) #0 {
+  %r = call half @test_callee(half %a, half %b)
+  ret half %r
+}
+
+; CHECK-ALL-LABEL: test_call_flipped:
+; CHECK-ALL-NEXT: .fnstart
+; CHECK-ALL-NEXT: push {r11, lr}
+; CHECK-ALL-NEXT: mov r2, r0
+; CHECK-ALL-NEXT: mov r0, r1
+; CHECK-ALL-NEXT: mov r1, r2
+; CHECK-ALL-NEXT: bl test_callee
+; CHECK-ALL-NEXT: pop {r11, pc}
+define half @test_call_flipped(half %a, half %b) #0 {
+  %r = call half @test_callee(half %b, half %a)
+  ret half %r
+}
+
+; CHECK-ALL-LABEL: test_tailcall_flipped:
+; CHECK-ALL-NEXT: .fnstart
+; CHECK-ALL-NEXT: mov r2, r0
+; CHECK-ALL-NEXT: mov r0, r1
+; CHECK-ALL-NEXT: mov r1, r2
+; CHECK-ALL-NEXT: b test_callee
+define half @test_tailcall_flipped(half %a, half %b) #0 {
+  %r = tail call half @test_callee(half %b, half %a)
+  ret half %r
+}
+
+; Optimizer picks %p or %q based on %c and only loads that value
+; No conversion is needed
+; CHECK-ALL-LABEL: test_select:
+; CHECK-ALL-NEXT: .fnstart
+; CHECK-ALL-NEXT: cmp r2, #0
+; CHECK-ALL-NEXT: movne r1, r0
+; CHECK-ALL-NEXT: ldrh r1, [r1]
+; CHECK-ALL-NEXT: strh r1, [r0]
+; CHECK-ALL-NEXT: bx lr
+define void @test_select(half* %p, half* %q, i1 zeroext %c) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %r = select i1 %c, half %a, half %b
+  store half %r, half* %p
+  ret void
+}
+
+; Test only two variants of fcmp.  These get translated to f32 vcmpe
+; instructions anyway.
+; CHECK-FP16-LABEL: test_fcmp_une:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcmpe.f32
+; CHECK-FP16: vmrs APSR_nzcv, fpscr
+; CHECK-FP16: movwne
+; CHECK-LIBCALL-LABEL: test_fcmp_une:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vcmpe.f32
+; CHECK-LIBCALL: movwne
+define i1 @test_fcmp_une(half* %p, half* %q) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %r = fcmp une half %a, %b
+  ret i1 %r
+}
+
+; CHECK-FP16-LABEL: test_fcmp_ueq:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcmpe.f32
+; CHECK-FP16: vmrs APSR_nzcv, fpscr
+; CHECK-FP16: movweq
+; CHECK-FP16: movwvs
+; CHECK-LIBCALL-LABEL: test_fcmp_ueq:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vcmpe.f32
+; CHECK-LIBCALL: movweq
+define i1 @test_fcmp_ueq(half* %p, half* %q) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %r = fcmp ueq half %a, %b
+  ret i1 %r
+}
+
+; CHECK-FP16-LABEL: test_br_cc:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcmpe.f32
+; CHECK-FP16: vmrs APSR_nzcv, fpscr
+; CHECK-FP16: strmi
+; CHECK-FP16: strpl
+; CHECK-LIBCALL-LABEL: test_br_cc:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vcmpe.f32
+; CHECK-LIBCALL: strmi
+; CHECK-LIBCALL: strpl
+define void @test_br_cc(half* %p, half* %q, i32* %p1, i32* %p2) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %c = fcmp uge half %a, %b
+  br i1 %c, label %then, label %else
+then:
+  store i32 0, i32* %p1
+  ret void
+else:
+  store i32 0, i32* %p2
+  ret void
+}
+
+declare i1 @test_dummy(half* %p) #0
+; CHECK-FP16-LABEL: test_phi:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: [[LOOP:.LBB[1-9_]+]]:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl      test_dummy
+; CHECK-FP16: bne     [[LOOP]]
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_phi:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: [[LOOP:.LBB[1-9_]+]]:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl test_dummy
+; CHECK-LIBCALL: bne     [[LOOP]]
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_phi(half* %p) #0 {
+entry:
+  %a = load half, half* %p
+  br label %loop
+loop:
+  %r = phi half [%a, %entry], [%b, %loop]
+  %b = load half, half* %p
+  %c = call i1 @test_dummy(half* %p)
+  br i1 %c, label %loop, label %return
+return:
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_fptosi_i32:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvt.s32.f32
+; CHECK-LIBCALL-LABEL: test_fptosi_i32:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vcvt.s32.f32
+define i32 @test_fptosi_i32(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = fptosi half %a to i32
+  ret i32 %r
+}
+
+; CHECK-FP16-LABEL: test_fptosi_i64:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl __aeabi_f2lz
+; CHECK-LIBCALL-LABEL: test_fptosi_i64:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __aeabi_f2lz
+define i64 @test_fptosi_i64(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = fptosi half %a to i64
+  ret i64 %r
+}
+
+; CHECK-FP16-LABEL: test_fptoui_i32:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvt.u32.f32
+; CHECK-LIBCALL-LABEL: test_fptoui_i32:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vcvt.u32.f32
+define i32 @test_fptoui_i32(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = fptoui half %a to i32
+  ret i32 %r
+}
+
+; CHECK-FP16-LABEL: test_fptoui_i64:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl __aeabi_f2ulz
+; CHECK-LIBCALL-LABEL: test_fptoui_i64:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __aeabi_f2ulz
+define i64 @test_fptoui_i64(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = fptoui half %a to i64
+  ret i64 %r
+}
+
+; CHECK-FP16-LABEL: test_sitofp_i32:
+; CHECK-FP16: vcvt.f32.s32
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_sitofp_i32:
+; CHECK-LIBCALL: vcvt.f32.s32
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_sitofp_i32(i32 %a, half* %p) #0 {
+  %r = sitofp i32 %a to half
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_uitofp_i32:
+; CHECK-FP16: vcvt.f32.u32
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_uitofp_i32:
+; CHECK-LIBCALL: vcvt.f32.u32
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_uitofp_i32(i32 %a, half* %p) #0 {
+  %r = uitofp i32 %a to half
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_sitofp_i64:
+; CHECK-FP16: bl __aeabi_l2f
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_sitofp_i64:
+; CHECK-LIBCALL: bl __aeabi_l2f
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_sitofp_i64(i64 %a, half* %p) #0 {
+  %r = sitofp i64 %a to half
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_uitofp_i64:
+; CHECK-FP16: bl __aeabi_ul2f
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_uitofp_i64:
+; CHECK-LIBCALL: bl __aeabi_ul2f
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_uitofp_i64(i64 %a, half* %p) #0 {
+  %r = uitofp i64 %a to half
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_fptrunc_float:
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_fptrunc_float:
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_fptrunc_float(float %f, half* %p) #0 {
+  %a = fptrunc float %f to half
+  store half %a, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_fptrunc_double:
+; CHECK-FP16: bl __aeabi_d2h
+; CHECK-LIBCALL-LABEL: test_fptrunc_double:
+; CHECK-LIBCALL: bl __aeabi_d2h
+define void @test_fptrunc_double(double %d, half* %p) #0 {
+  %a = fptrunc double %d to half
+  store half %a, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_fpextend_float:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-LIBCALL-LABEL: test_fpextend_float:
+; CHECK-LIBCALL: b __gnu_h2f_ieee
+define float @test_fpextend_float(half* %p) {
+  %a = load half, half* %p, align 2
+  %r = fpext half %a to float
+  ret float %r
+}
+
+; CHECK-FP16-LABEL: test_fpextend_double:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvt.f64.f32
+; CHECK-LIBCALL-LABEL: test_fpextend_double:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vcvt.f64.f32
+define double @test_fpextend_double(half* %p) {
+  %a = load half, half* %p, align 2
+  %r = fpext half %a to double
+  ret double %r
+}
+
+; CHECK-ALL-LABEL: test_bitcast_halftoi16:
+; CHECK-ALL-NEXT: .fnstart
+; CHECK-ALL-NEXT: ldrh r0, [r0]
+; CHECK-ALL-NEXT: bx lr
+define i16 @test_bitcast_halftoi16(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = bitcast half %a to i16
+  ret i16 %r
+}
+
+; CHECK-ALL-LABEL: test_bitcast_i16tohalf:
+; CHECK-ALL-NEXT: .fnstart
+; CHECK-ALL-NEXT: strh r0, [r1]
+; CHECK-ALL-NEXT: bx lr
+define void @test_bitcast_i16tohalf(i16 %a, half* %p) #0 {
+  %r = bitcast i16 %a to half
+  store half %r, half* %p
+  ret void
+}
+
+declare half @llvm.sqrt.f16(half %a) #0
+declare half @llvm.powi.f16(half %a, i32 %b) #0
+declare half @llvm.sin.f16(half %a) #0
+declare half @llvm.cos.f16(half %a) #0
+declare half @llvm.pow.f16(half %a, half %b) #0
+declare half @llvm.exp.f16(half %a) #0
+declare half @llvm.exp2.f16(half %a) #0
+declare half @llvm.log.f16(half %a) #0
+declare half @llvm.log10.f16(half %a) #0
+declare half @llvm.log2.f16(half %a) #0
+declare half @llvm.fma.f16(half %a, half %b, half %c) #0
+declare half @llvm.fabs.f16(half %a) #0
+declare half @llvm.minnum.f16(half %a, half %b) #0
+declare half @llvm.maxnum.f16(half %a, half %b) #0
+declare half @llvm.copysign.f16(half %a, half %b) #0
+declare half @llvm.floor.f16(half %a) #0
+declare half @llvm.ceil.f16(half %a) #0
+declare half @llvm.trunc.f16(half %a) #0
+declare half @llvm.rint.f16(half %a) #0
+declare half @llvm.nearbyint.f16(half %a) #0
+declare half @llvm.round.f16(half %a) #0
+declare half @llvm.fmuladd.f16(half %a, half %b, half %c) #0
+
+; CHECK-FP16-LABEL: test_sqrt:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vsqrt.f32
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_sqrt:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vsqrt.f32
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_sqrt(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.sqrt.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_fpowi:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl __powisf2
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_fpowi:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __powisf2
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_fpowi(half* %p, i32 %b) #0 {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.powi.f16(half %a, i32 %b)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_sin:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl sinf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_sin:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl sinf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_sin(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.sin.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_cos:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl cosf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_cos:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl cosf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_cos(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.cos.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_pow:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl powf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_pow:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl powf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_pow(half* %p, half* %q) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %r = call half @llvm.pow.f16(half %a, half %b)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_exp:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl expf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_exp:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl expf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_exp(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.exp.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_exp2:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl exp2f
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_exp2:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl exp2f
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_exp2(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.exp2.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_log:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl logf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_log:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl logf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_log(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.log.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_log10:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl log10f
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_log10:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl log10f
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_log10(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.log10.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_log2:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl log2f
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_log2:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl log2f
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_log2(half* %p) #0 {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.log2.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_fma:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl fmaf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_fma:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl fmaf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_fma(half* %p, half* %q, half* %r) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %c = load half, half* %r, align 2
+  %v = call half @llvm.fma.f16(half %a, half %b, half %c)
+  store half %v, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_fabs:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vabs.f32
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_fabs:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bfc
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_fabs(half* %p) {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.fabs.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_minnum:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl fminf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_minnum:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl fminf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_minnum(half* %p, half* %q) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %r = call half @llvm.minnum.f16(half %a, half %b)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_maxnum:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl fmaxf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_maxnum:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl fmaxf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_maxnum(half* %p, half* %q) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %r = call half @llvm.maxnum.f16(half %a, half %b)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_copysign:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vbsl
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_copysign:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vbsl
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_copysign(half* %p, half* %q) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %r = call half @llvm.copysign.f16(half %a, half %b)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_floor:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl floorf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_floor:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl floorf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_floor(half* %p) {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.floor.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_ceil:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl ceilf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_ceil:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl ceilf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_ceil(half* %p) {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.ceil.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_trunc:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl truncf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_trunc:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl truncf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_trunc(half* %p) {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.trunc.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_rint:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl rintf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_rint:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl rintf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_rint(half* %p) {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.rint.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_nearbyint:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl nearbyintf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_nearbyint:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl nearbyintf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_nearbyint(half* %p) {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.nearbyint.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_round:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: bl roundf
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_round:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl roundf
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_round(half* %p) {
+  %a = load half, half* %p, align 2
+  %r = call half @llvm.round.f16(half %a)
+  store half %r, half* %p
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_fmuladd:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-FP16: vmla.f32
+; CHECK-FP16: vcvtb.f16.f32
+; CHECK-LIBCALL-LABEL: test_fmuladd:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+; CHECK-LIBCALL: vmla.f32
+; CHECK-LIBCALL: bl __gnu_f2h_ieee
+define void @test_fmuladd(half* %p, half* %q, half* %r) #0 {
+  %a = load half, half* %p, align 2
+  %b = load half, half* %q, align 2
+  %c = load half, half* %r, align 2
+  %v = call half @llvm.fmuladd.f16(half %a, half %b, half %c)
+  store half %v, half* %p
+  ret void
+}
+
+; f16 vectors are not legal in the backend.  Vector elements are not assigned
+; to the register, but are stored in the stack instead.  Hence insertelement
+; and extractelement have these extra loads and stores.
+
+; CHECK-ALL-LABEL: test_insertelement:
+; CHECK-ALL-NEXT: .fnstart
+; CHECK-ALL-NEXT: sub sp, sp, #8
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: strh
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: strh
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: strh
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: strh
+; CHECK-ALL-NEXT: mov
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: add
+; CHECK-ALL-NEXT: strh
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: strh
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: strh
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: strh
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: strh
+; CHECK-ALL-NEXT: add sp, sp, #8
+; CHECK-ALL-NEXT: bx lr
+define void @test_insertelement(half* %p, <4 x half>* %q, i32 %i) #0 {
+  %a = load half, half* %p, align 2
+  %b = load <4 x half>, <4 x half>* %q, align 8
+  %c = insertelement <4 x half> %b, half %a, i32 %i
+  store <4 x half> %c, <4 x half>* %q
+  ret void
+}
+
+; CHECK-ALL-LABEL: test_extractelement:
+; CHECK-ALL-NEXT: .fnstart
+; CHECK-ALL-NEXT: sub sp, sp, #8
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: orr
+; CHECK-ALL-NEXT: str
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: orr
+; CHECK-ALL-NEXT: str
+; CHECK-ALL-NEXT: mov
+; CHECK-ALL-NEXT: add
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: strh
+; CHECK-ALL-NEXT: add sp, sp, #8
+; CHECK-ALL-NEXT: bx lr
+define void @test_extractelement(half* %p, <4 x half>* %q, i32 %i) #0 {
+  %a = load <4 x half>, <4 x half>* %q, align 8
+  %b = extractelement <4 x half> %a, i32 %i
+  store half %b, half* %p
+  ret void
+}
+
+; test struct operations
+
+%struct.dummy = type { i32, half }
+
+; CHECK-ALL-LABEL: test_insertvalue:
+; CHECK-ALL-NEXT: .fnstart
+; CHECK-ALL-NEXT: ldr
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: strh
+; CHECK-ALL-NEXT: str
+; CHECK-ALL-NEXT: bx lr
+define void @test_insertvalue(%struct.dummy* %p, half* %q) {
+  %a = load %struct.dummy, %struct.dummy* %p
+  %b = load half, half* %q
+  %c = insertvalue %struct.dummy %a, half %b, 1
+  store %struct.dummy %c, %struct.dummy* %p
+  ret void
+}
+
+; CHECK-ALL-LABEL: test_extractvalue:
+; CHECK-ALL-NEXT: .fnstart
+; CHECK-ALL-NEXT: ldrh
+; CHECK-ALL-NEXT: strh
+; CHECK-ALL-NEXT: bx lr
+define void @test_extractvalue(%struct.dummy* %p, half* %q) {
+  %a = load %struct.dummy, %struct.dummy* %p
+  %b = extractvalue %struct.dummy %a, 1
+  store half %b, half* %q
+  ret void
+}
+
+; CHECK-FP16-LABEL: test_struct_return:
+; CHECK-FP16: vcvtb.f32.f16
+; CHECK-LIBCALL-LABEL: test_struct_return:
+; CHECK-LIBCALL: bl __gnu_h2f_ieee
+define %struct.dummy @test_struct_return(%struct.dummy* %p) {
+  %a = load %struct.dummy, %struct.dummy* %p
+  ret %struct.dummy %a
+}
+
+; CHECK-ALL-LABEL: test_struct_arg:
+; CHECK-ALL-NEXT: .fnstart
+; CHECK-ALL-NEXT: mov r0, r1
+; CHECK-ALL-NEXT: bx lr
+define half @test_struct_arg(%struct.dummy %p) {
+  %a = extractvalue %struct.dummy %p, 1
+  ret half %a
+}
+
+attributes #0 = { nounwind }
-- 
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