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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

36 lines
1.3 KiB
LLVM

; 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" }