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