ARM32 vector lowering: fabs, scalarize remaining arithmetic operations.

tests_lit/assembler/arm32/vabs.ll

-; Show that we translate intrinsics for fabs on float and double.
+; Show that we translate intrinsics for fabs on float, double and float vectors.
 
 ; REQUIRES: allow_dump
 
 ; Compile using standalone assembler.
 ; RUN: %p2i --filetype=asm -i %s --target=arm32 --args -Om1 \
 ; RUN:   -reg-use s20,d22 \
 ; RUN:   | FileCheck %s --check-prefix=ASM
 
 ; Show bytes in assembled standalone code.
 ; RUN: %p2i --filetype=asm -i %s --target=arm32 --assemble --disassemble \
 ; RUN:   --args -Om1 \
 ; RUN:   -reg-use s20,d22 \
 ; RUN:   | FileCheck %s --check-prefix=DIS
 
 ; Compile using integrated assembler.
 ; RUN: %p2i --filetype=iasm -i %s --target=arm32 --args -Om1 \
 ; RUN:   -reg-use s20,d22 \
 ; RUN:   | FileCheck %s --check-prefix=IASM
 
 ; Show bytes in assembled integrated code.
 ; RUN: %p2i --filetype=iasm -i %s --target=arm32 --assemble --disassemble \
 ; RUN:   --args -Om1 \
 ; RUN:   -reg-use s20,d22 \
 ; RUN:   | FileCheck %s --check-prefix=DIS
 
 declare float @llvm.fabs.f32(float)
 declare double @llvm.fabs.f64(double)
+declare <4 x float> @llvm.fabs.v4f32(<4 x float>)
 
 define internal float @test_fabs_float(float %x) {
 ; ASM-LABEL: test_fabs_float:
 ; DIS-LABEL: 00000000 <test_fabs_float>:
 ; IASM-LABEL: test_fabs_float:
 
 entry:
   %r = call float @llvm.fabs.f32(float %x)
 
 ; ASM:  vabs.f32        s20, s20
@@ skipping 10 matching lines @@
 
 entry:
   %r = call double @llvm.fabs.f64(double %x)
 
 ; ASM:  vabs.f64        d22, d22
 ; DIS:   3c:    eef06be6
 ; IASM-NOT: vabs.64
 
   ret double %r
 }
+
+define internal <4 x float> @test_fabs_4float(<4 x float> %x) {
+; ASM-LABEL: test_fabs_4float:
+; DIS-LABEL: 00000050 <test_fabs_4float>:
+; IASM-LABEL: test_fabs_4float:
+
+entry:
+  %r = call <4 x float> @llvm.fabs.v4f32(<4 x float> %x)
+
+; ASM:  vabs.f32        q0, q0
+; DIS:   60:    f3b90740
+; IASM-NOT: vabs.f32
+
+  ret <4 x float> %r
+}