Rebased PNaCl localmods in LLVM to 223109

test/NaCl/ARM/avoid-aeabi-functions.ll

+; RUN: llc -mtriple armv7a-linux-gnueabihf < %s -o - \
+; RUN:     | FileCheck %s --check-prefix=EABI
+; RUN: llc -mtriple armv7a-linux-gnueabihf < %s -o - \
+; RUN:     -arm-enable-aeabi-functions=0 | FileCheck %s --check-prefix=NO_EABI
+; RUN: llc -mtriple armv7a-none-nacl-gnueabihf < %s -o - \
+; RUN:     | FileCheck %s --check-prefix=NO_EABI
+
+; PNaCl's build of compiler-rt (libgcc.a) does not define __aeabi_*
+; functions for ARM yet.  Test that the backend can avoid using these
+; __aeabi_* functions.
+
+define i64 @do_division(i64 %a, i64 %b) {
+  %div = udiv i64 %a, %b
+  ret i64 %div
+}
+; EABI-LABEL: do_division:
+; EABI: bl __aeabi_uldivmod
+; NO_EABI-LABEL: do_division:
+; NO_EABI: bl __udivdi3
+
+
+declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1)
+
+; __aeabi_memset() has two arguments swapped compared with the normal
+; memset(), so check that both are handled correctly.
+define void @do_memset(i8* %addr) {
+  call void @llvm.memset.p0i8.i32(i8* %addr, i8 255, i32 100, i32 0, i1 false)
+  ret void
+}
+; EABI-LABEL: do_memset:
+; EABI: mov r1, #100
+; EABI: mov r2, #255
+; EABI: bl __aeabi_memset
+; NO_EABI-LABEL: do_memset:
+; NO_EABI: mov r1, #255
+; NO_EABI: mov r2, #100
+; NO_EABI: bl memset