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TheRock/compiler/amd-llvm/llvm/test/CodeGen/LoongArch/emergency-spill-slot.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

102 lines
3.4 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc --mtriple=loongarch64 -mattr=+d -O0 < %s | FileCheck %s
@var = external global i32
define void @func() {
; CHECK-LABEL: func:
; CHECK: # %bb.0:
; CHECK-NEXT: lu12i.w $a0, 1
; CHECK-NEXT: ori $a0, $a0, 16
; CHECK-NEXT: sub.d $sp, $sp, $a0
; CHECK-NEXT: .cfi_def_cfa_offset 4112
; CHECK-NEXT: pcalau12i $a0, %got_pc_hi20(var)
; CHECK-NEXT: ld.d $a1, $a0, %got_pc_lo12(var)
; CHECK-NEXT: ld.w $t8, $a1, 0
; CHECK-NEXT: ld.w $t7, $a1, 0
; CHECK-NEXT: ld.w $t6, $a1, 0
; CHECK-NEXT: ld.w $t5, $a1, 0
; CHECK-NEXT: ld.w $t4, $a1, 0
; CHECK-NEXT: ld.w $t3, $a1, 0
; CHECK-NEXT: ld.w $t2, $a1, 0
; CHECK-NEXT: ld.w $t1, $a1, 0
; CHECK-NEXT: ld.w $t0, $a1, 0
; CHECK-NEXT: ld.w $a7, $a1, 0
; CHECK-NEXT: ld.w $a6, $a1, 0
; CHECK-NEXT: ld.w $a5, $a1, 0
; CHECK-NEXT: ld.w $a4, $a1, 0
; CHECK-NEXT: ld.w $a3, $a1, 0
; CHECK-NEXT: ld.w $a2, $a1, 0
; CHECK-NEXT: ld.w $a0, $a1, 0
; CHECK-NEXT: st.d $fp, $sp, 0 # 8-byte Folded Spill
; CHECK-NEXT: lu12i.w $fp, 1
; CHECK-NEXT: ori $fp, $fp, 12
; CHECK-NEXT: add.d $fp, $sp, $fp
; CHECK-NEXT: st.w $t8, $fp, 0
; CHECK-NEXT: ld.d $fp, $sp, 0 # 8-byte Folded Reload
; CHECK-NEXT: st.w $t8, $a1, 0
; CHECK-NEXT: st.w $t7, $a1, 0
; CHECK-NEXT: st.w $t6, $a1, 0
; CHECK-NEXT: st.w $t5, $a1, 0
; CHECK-NEXT: st.w $t4, $a1, 0
; CHECK-NEXT: st.w $t3, $a1, 0
; CHECK-NEXT: st.w $t2, $a1, 0
; CHECK-NEXT: st.w $t1, $a1, 0
; CHECK-NEXT: st.w $t0, $a1, 0
; CHECK-NEXT: st.w $a7, $a1, 0
; CHECK-NEXT: st.w $a6, $a1, 0
; CHECK-NEXT: st.w $a5, $a1, 0
; CHECK-NEXT: st.w $a4, $a1, 0
; CHECK-NEXT: st.w $a3, $a1, 0
; CHECK-NEXT: st.w $a2, $a1, 0
; CHECK-NEXT: st.w $a0, $a1, 0
; CHECK-NEXT: lu12i.w $a0, 1
; CHECK-NEXT: ori $a0, $a0, 16
; CHECK-NEXT: add.d $sp, $sp, $a0
; CHECK-NEXT: ret
%space = alloca i32, align 4
%stackspace = alloca[1024 x i32], align 4
;; 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
;; Computing a stack-relative values needs an additional register.
;; We should get an emergency spill/reload for this.
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
ret void
}