derek.holloway
7502bf64a4
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110 lines
3.9 KiB
LLVM
110 lines
3.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
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; RUN: llc -mtriple=loongarch64 -O2 < %s -verify-machineinstrs | FileCheck %s -check-prefix=LA64
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; RUN: llc -mtriple=loongarch32 -O2 < %s -verify-machineinstrs | FileCheck %s -check-prefix=LA32
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;; Test that very large outgoing call frames in functions with variable-sized
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;; objects get proper stack probing. The outgoing args are large enough to force
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;; the PROBED_STACKALLOC path, which must be expanded in a non-entry block.
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define void @f(i64 %n) #0 {
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; LA64-LABEL: f:
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; LA64: # %bb.0: # %entry
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; LA64-NEXT: addi.d $sp, $sp, -16
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; LA64-NEXT: .cfi_def_cfa_offset 16
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; LA64-NEXT: st.d $zero, $sp, 0
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; LA64-NEXT: st.d $ra, $sp, 8 # 8-byte Folded Spill
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; LA64-NEXT: st.d $fp, $sp, 0 # 8-byte Folded Spill
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; LA64-NEXT: .cfi_offset 1, -8
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; LA64-NEXT: .cfi_offset 22, -16
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; LA64-NEXT: addi.d $fp, $sp, 16
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; LA64-NEXT: .cfi_def_cfa 22, 0
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; LA64-NEXT: slli.d $a0, $a0, 2
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; LA64-NEXT: addi.d $a0, $a0, 15
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; LA64-NEXT: bstrins.d $a0, $zero, 3, 0
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; LA64-NEXT: sub.d $a0, $sp, $a0
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; LA64-NEXT: lu12i.w $a1, 1
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; LA64-NEXT: .LBB0_1: # %entry
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; LA64-NEXT: # =>This Inner Loop Header: Depth=1
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; LA64-NEXT: sub.d $sp, $sp, $a1
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; LA64-NEXT: st.d $zero, $sp, 0
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; LA64-NEXT: bltu $a0, $sp, .LBB0_1
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; LA64-NEXT: # %bb.2: # %entry
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; LA64-NEXT: move $sp, $a0
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; LA64-NEXT: lu12i.w $a1, 5
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; LA64-NEXT: sub.d $t1, $sp, $a1
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; LA64-NEXT: lu12i.w $t2, 1
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; LA64-NEXT: .LBB0_3: # %entry
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; LA64-NEXT: # =>This Inner Loop Header: Depth=1
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; LA64-NEXT: sub.d $sp, $sp, $t2
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; LA64-NEXT: st.d $zero, $sp, 0
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; LA64-NEXT: bne $sp, $t1, .LBB0_3
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; LA64-NEXT: # %bb.4: # %entry
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; LA64-NEXT: addi.d $sp, $sp, -2048
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; LA64-NEXT: addi.d $sp, $sp, -1424
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; LA64-NEXT: st.d $zero, $sp, 0
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; LA64-NEXT: pcaddu18i $ra, %call36(g)
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; LA64-NEXT: jirl $ra, $ra, 0
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; LA64-NEXT: lu12i.w $a0, 5
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; LA64-NEXT: ori $a0, $a0, 3472
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; LA64-NEXT: add.d $sp, $sp, $a0
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; LA64-NEXT: addi.d $sp, $fp, -16
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; LA64-NEXT: ld.d $fp, $sp, 0 # 8-byte Folded Reload
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; LA64-NEXT: ld.d $ra, $sp, 8 # 8-byte Folded Reload
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; LA64-NEXT: addi.d $sp, $sp, 16
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; LA64-NEXT: ret
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;
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; LA32-LABEL: f:
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; LA32: # %bb.0: # %entry
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; LA32-NEXT: addi.w $sp, $sp, -16
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; LA32-NEXT: .cfi_def_cfa_offset 16
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; LA32-NEXT: st.w $zero, $sp, 0
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; LA32-NEXT: st.w $ra, $sp, 12 # 4-byte Folded Spill
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; LA32-NEXT: st.w $fp, $sp, 8 # 4-byte Folded Spill
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; LA32-NEXT: .cfi_offset 1, -4
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; LA32-NEXT: .cfi_offset 22, -8
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; LA32-NEXT: addi.w $fp, $sp, 16
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; LA32-NEXT: .cfi_def_cfa 22, 0
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; LA32-NEXT: slli.w $a0, $a0, 2
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; LA32-NEXT: addi.w $a0, $a0, 15
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; LA32-NEXT: addi.w $a1, $zero, -16
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; LA32-NEXT: and $a0, $a0, $a1
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; LA32-NEXT: sub.w $a0, $sp, $a0
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; LA32-NEXT: lu12i.w $a1, 1
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; LA32-NEXT: .LBB0_1: # %entry
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; LA32-NEXT: # =>This Inner Loop Header: Depth=1
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; LA32-NEXT: sub.w $sp, $sp, $a1
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; LA32-NEXT: st.w $zero, $sp, 0
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; LA32-NEXT: bltu $a0, $sp, .LBB0_1
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; LA32-NEXT: # %bb.2: # %entry
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; LA32-NEXT: move $sp, $a0
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; LA32-NEXT: lu12i.w $a1, 5
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; LA32-NEXT: sub.w $t1, $sp, $a1
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; LA32-NEXT: lu12i.w $t2, 1
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; LA32-NEXT: .LBB0_3: # %entry
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; LA32-NEXT: # =>This Inner Loop Header: Depth=1
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; LA32-NEXT: sub.w $sp, $sp, $t2
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; LA32-NEXT: st.w $zero, $sp, 0
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; LA32-NEXT: bne $sp, $t1, .LBB0_3
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; LA32-NEXT: # %bb.4: # %entry
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; LA32-NEXT: addi.w $sp, $sp, -2048
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; LA32-NEXT: addi.w $sp, $sp, -1456
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; LA32-NEXT: st.w $zero, $sp, 0
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; LA32-NEXT: bl g
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; LA32-NEXT: lu12i.w $a0, 5
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; LA32-NEXT: ori $a0, $a0, 3504
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; LA32-NEXT: add.w $sp, $sp, $a0
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; LA32-NEXT: addi.w $sp, $fp, -16
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; LA32-NEXT: ld.w $fp, $sp, 8 # 4-byte Folded Reload
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; LA32-NEXT: ld.w $ra, $sp, 12 # 4-byte Folded Reload
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; LA32-NEXT: addi.w $sp, $sp, 16
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; LA32-NEXT: ret
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entry:
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%v = alloca i32, i64 %n
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call void @g(ptr %v, [3000 x i64] poison)
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ret void
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}
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declare void @g(ptr, [3000 x i64])
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attributes #0 = { "probe-stack"="inline-asm" }
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