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. 3; 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 6; REQUIRES: asserts 7; 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 11 12declare dso_local fastcc signext i32 @foo(i16*, i32 signext) unnamed_addr 13 14define internal fastcc void @fun1(i16* %arg, i16* nocapture %arg1) unnamed_addr #0 { 15bb: 16 %tmp = load i16, i16* undef, align 2 17 %tmp2 = shl i16 %tmp, 4 18 %tmp3 = tail call fastcc signext i32 @foo(i16* nonnull %arg, i32 signext 5) 19 %tmp4 = or i16 0, %tmp2 20 %tmp5 = or i16 %tmp4, 0 21 store i16 %tmp5, i16* undef, align 2 22 %tmp6 = getelementptr inbounds i16, i16* %arg, i64 5 23 %tmp7 = load i16, i16* %tmp6, align 2 24 store i16 %tmp7, i16* %arg1, align 2 25 ret void 26} 27 28define fastcc void @fun0(i8* nocapture readonly %arg, i16* nocapture %arg1, i32 signext %arg2) unnamed_addr { 29bb: 30 %a = alloca i8, i64 undef 31 call fastcc void @fun1(i16* nonnull undef, i16* %arg1) 32 ret void 33} 34 35attributes #0 = { norecurse nounwind "frame-pointer"="none" } 36