98 lines
3.1 KiB
LLVM
98 lines
3.1 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
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;; Test how memcpy is optimized when ual is turned off which is similar to AArch64/arm64-misaligned-memcpy-inline.ll.
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; RUN: llc --mtriple=loongarch32 --mattr=-ual < %s | FileCheck %s --check-prefix=LA32
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; RUN: llc --mtriple=loongarch64 --mattr=-ual < %s | FileCheck %s --check-prefix=LA64
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;; Small (16 bytes here) unaligned memcpy() should be a function call if
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;; ual is turned off.
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define void @t0(ptr %out, ptr %in) {
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; LA32-LABEL: t0:
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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 $ra, $sp, 12 # 4-byte Folded Spill
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; LA32-NEXT: .cfi_offset 1, -4
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; LA32-NEXT: ori $a2, $zero, 16
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; LA32-NEXT: bl %plt(memcpy)
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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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;
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; LA64-LABEL: t0:
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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 $ra, $sp, 8 # 8-byte Folded Spill
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; LA64-NEXT: .cfi_offset 1, -8
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; LA64-NEXT: ori $a2, $zero, 16
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; LA64-NEXT: bl %plt(memcpy)
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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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entry:
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call void @llvm.memcpy.p0.p0.i64(ptr %out, ptr %in, i64 16, i1 false)
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ret void
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}
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;; Small (16 bytes here) aligned memcpy() should be inlined even if
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;; ual is turned off.
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define void @t1(ptr align 8 %out, ptr align 8 %in) {
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; LA32-LABEL: t1:
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; LA32: # %bb.0: # %entry
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; LA32-NEXT: ld.w $a2, $a1, 12
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; LA32-NEXT: st.w $a2, $a0, 12
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; LA32-NEXT: ld.w $a2, $a1, 8
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; LA32-NEXT: st.w $a2, $a0, 8
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; LA32-NEXT: ld.w $a2, $a1, 4
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; LA32-NEXT: st.w $a2, $a0, 4
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; LA32-NEXT: ld.w $a1, $a1, 0
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; LA32-NEXT: st.w $a1, $a0, 0
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; LA32-NEXT: ret
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;
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; LA64-LABEL: t1:
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; LA64: # %bb.0: # %entry
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; LA64-NEXT: ld.d $a2, $a1, 8
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; LA64-NEXT: st.d $a2, $a0, 8
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; LA64-NEXT: ld.d $a1, $a1, 0
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; LA64-NEXT: st.d $a1, $a0, 0
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; LA64-NEXT: ret
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entry:
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call void @llvm.memcpy.p0.p0.i64(ptr align 8 %out, ptr align 8 %in, i64 16, i1 false)
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ret void
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}
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;; Tiny (4 bytes here) unaligned memcpy() should be inlined with byte sized
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;; loads and stores if ual is turned off.
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define void @t2(ptr %out, ptr %in) {
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; LA32-LABEL: t2:
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; LA32: # %bb.0: # %entry
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; LA32-NEXT: ld.b $a2, $a1, 3
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; LA32-NEXT: st.b $a2, $a0, 3
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; LA32-NEXT: ld.b $a2, $a1, 2
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; LA32-NEXT: st.b $a2, $a0, 2
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; LA32-NEXT: ld.b $a2, $a1, 1
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; LA32-NEXT: st.b $a2, $a0, 1
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; LA32-NEXT: ld.b $a1, $a1, 0
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; LA32-NEXT: st.b $a1, $a0, 0
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; LA32-NEXT: ret
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;
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; LA64-LABEL: t2:
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; LA64: # %bb.0: # %entry
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; LA64-NEXT: ld.b $a2, $a1, 3
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; LA64-NEXT: st.b $a2, $a0, 3
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; LA64-NEXT: ld.b $a2, $a1, 2
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; LA64-NEXT: st.b $a2, $a0, 2
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; LA64-NEXT: ld.b $a2, $a1, 1
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; LA64-NEXT: st.b $a2, $a0, 1
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; LA64-NEXT: ld.b $a1, $a1, 0
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; LA64-NEXT: st.b $a1, $a0, 0
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; LA64-NEXT: ret
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entry:
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call void @llvm.memcpy.p0.p0.i64(ptr %out, ptr %in, i64 4, i1 false)
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ret void
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}
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declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1)
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