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; RUN: llc -march=mipsel -O0 -relocation-model=pic < %s | FileCheck %s
; Check that register scavenging spill slot is close to $fp.
target triple="mipsel--"
; FIXME: After recent rework to FastISel, don't know how to trigger the
; emergency spill slot. Filed PR48301.
; XFAIL: *
@var = external global i32
@ptrvar = external global ptr
; CHECK-LABEL: func:
define void @func() {
%space = alloca i32, align 4
%stackspace = alloca[16384 x i32], align 4
; ensure stackspace is not optimized out
store volatile ptr %stackspace, ptr @ptrvar
; Load values to increase register pressure.
%v0 = load volatile i32, ptr @var
%v1 = load volatile i32, ptr @var
%v2 = load volatile i32, ptr @var
%v3 = load volatile i32, ptr @var
%v4 = load volatile i32, ptr @var
%v5 = load volatile i32, ptr @var
%v6 = load volatile i32, ptr @var
%v7 = load volatile i32, ptr @var
%v8 = load volatile i32, ptr @var
%v9 = load volatile i32, ptr @var
%v10 = load volatile i32, ptr @var
%v11 = load volatile i32, ptr @var
%v12 = load volatile i32, ptr @var
%v13 = load volatile i32, ptr @var
%v14 = load volatile i32, ptr @var
%v15 = load volatile i32, ptr @var
%v16 = load volatile i32, ptr @var
; Computing a stack-relative values needs an additional register.
; We should get an emergency spill/reload for this.
; CHECK: sw ${{.*}}, 0($sp)
; CHECK: lw ${{.*}}, 0($sp)
store volatile i32 %v0, ptr %space
; store values so they are used.
store volatile i32 %v0, ptr @var
store volatile i32 %v1, ptr @var
store volatile i32 %v2, ptr @var
store volatile i32 %v3, ptr @var
store volatile i32 %v4, ptr @var
store volatile i32 %v5, ptr @var
store volatile i32 %v6, ptr @var
store volatile i32 %v7, ptr @var
store volatile i32 %v8, ptr @var
store volatile i32 %v9, ptr @var
store volatile i32 %v10, ptr @var
store volatile i32 %v11, ptr @var
store volatile i32 %v12, ptr @var
store volatile i32 %v13, ptr @var
store volatile i32 %v14, ptr @var
store volatile i32 %v15, ptr @var
store volatile i32 %v16, ptr @var
ret void
}
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