1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
; 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" }
|
