1 ; Test that the updated regmask on the call to @fun1 preserves %r14 and
2 ; %15. @fun1 will save and restore these registers since it contains a call.
4 ; RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -enable-ipra -print-regmask-num-regs=-1 \
5 ; RUN: -debug-only=ip-regalloc 2>&1 < %s | FileCheck --check-prefix=DBG %s
8 ; DBG: fun1 function optimized for not having CSR
9 ; DBG: Call Instruction After Register Usage Info Propagation :
10 ; DBG-NEXT: CallBRASL @fun1{{.*}} $r14d $r15d
12 declare dso_local fastcc signext i32 @foo(ptr, i32 signext) unnamed_addr
14 define internal fastcc void @fun1(ptr %arg, ptr nocapture %arg1) unnamed_addr #0 {
16 %tmp = load i16, ptr undef, align 2
17 %tmp2 = shl i16 %tmp, 4
18 %tmp3 = tail call fastcc signext i32 @foo(ptr nonnull %arg, i32 signext 5)
19 %tmp4 = or i16 0, %tmp2
20 %tmp5 = or i16 %tmp4, 0
21 store i16 %tmp5, ptr undef, align 2
22 %tmp6 = getelementptr inbounds i16, ptr %arg, i64 5
23 %tmp7 = load i16, ptr %tmp6, align 2
24 store i16 %tmp7, ptr %arg1, align 2
28 define fastcc void @fun0(ptr nocapture readonly %arg, ptr nocapture %arg1, i32 signext %arg2) unnamed_addr {
30 %a = alloca i8, i64 undef
31 call fastcc void @fun1(ptr nonnull undef, ptr %arg1)
35 attributes #0 = { norecurse nounwind "frame-pointer"="none" }