| ; 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 : CallBRASL @fun1{{.*}} $r14d $r15d | |
| declare dso_local fastcc signext i32 @foo(i16*, i32 signext) unnamed_addr | |
| define internal fastcc void @fun1(i16* %arg, i16* nocapture %arg1) unnamed_addr #0 { | |
| bb: | |
| %tmp = load i16, i16* undef, align 2 | |
| %tmp2 = shl i16 %tmp, 4 | |
| %tmp3 = tail call fastcc signext i32 @foo(i16* nonnull %arg, i32 signext 5) | |
| %tmp4 = or i16 0, %tmp2 | |
| %tmp5 = or i16 %tmp4, 0 | |
| store i16 %tmp5, i16* undef, align 2 | |
| %tmp6 = getelementptr inbounds i16, i16* %arg, i64 5 | |
| %tmp7 = load i16, i16* %tmp6, align 2 | |
| store i16 %tmp7, i16* %arg1, align 2 | |
| ret void | |
| } | |
| define fastcc void @fun0(i8* nocapture readonly %arg, i16* nocapture %arg1, i32 signext %arg2) unnamed_addr { | |
| bb: | |
| %a = alloca i8, i64 undef | |
| call fastcc void @fun1(i16* nonnull undef, i16* %arg1) | |
| ret void | |
| } | |
| attributes #0 = { norecurse nounwind "no-frame-pointer-elim"="false" } |