; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc --mtriple=loongarch64 -O0 < %s | FileCheck %s --check-prefix=NOSHRINKW ; RUN: llc --mtriple=loongarch64 -O2 < %s | FileCheck %s --check-prefix=SHRINKW declare void @abort() define void @eliminate_restore(i32 %n) nounwind { ; NOSHRINKW-LABEL: eliminate_restore: ; NOSHRINKW: # %bb.0: ; NOSHRINKW-NEXT: addi.d $sp, $sp, -16 ; NOSHRINKW-NEXT: st.d $ra, $sp, 8 # 8-byte Folded Spill ; NOSHRINKW-NEXT: # kill: def $r5 killed $r4 ; NOSHRINKW-NEXT: addi.w $a1, $a0, 0 ; NOSHRINKW-NEXT: ori $a0, $zero, 32 ; NOSHRINKW-NEXT: bltu $a0, $a1, .LBB0_2 ; NOSHRINKW-NEXT: b .LBB0_1 ; NOSHRINKW-NEXT: .LBB0_1: # %if.then ; NOSHRINKW-NEXT: bl %plt(abort) ; NOSHRINKW-NEXT: .LBB0_2: # %if.end ; NOSHRINKW-NEXT: ld.d $ra, $sp, 8 # 8-byte Folded Reload ; NOSHRINKW-NEXT: addi.d $sp, $sp, 16 ; NOSHRINKW-NEXT: ret ; ; SHRINKW-LABEL: eliminate_restore: ; SHRINKW: # %bb.0: ; SHRINKW-NEXT: addi.w $a0, $a0, 0 ; SHRINKW-NEXT: ori $a1, $zero, 32 ; SHRINKW-NEXT: bgeu $a1, $a0, .LBB0_2 ; SHRINKW-NEXT: # %bb.1: # %if.end ; SHRINKW-NEXT: ret ; SHRINKW-NEXT: .LBB0_2: # %if.then ; SHRINKW-NEXT: addi.d $sp, $sp, -16 ; SHRINKW-NEXT: st.d $ra, $sp, 8 # 8-byte Folded Spill ; SHRINKW-NEXT: bl %plt(abort) %cmp = icmp ule i32 %n, 32 br i1 %cmp, label %if.then, label %if.end if.then: call void @abort() unreachable if.end: ret void } declare void @notdead(ptr) define void @conditional_alloca(i32 %n) nounwind { ; NOSHRINKW-LABEL: conditional_alloca: ; NOSHRINKW: # %bb.0: ; NOSHRINKW-NEXT: addi.d $sp, $sp, -32 ; NOSHRINKW-NEXT: st.d $ra, $sp, 24 # 8-byte Folded Spill ; NOSHRINKW-NEXT: st.d $fp, $sp, 16 # 8-byte Folded Spill ; NOSHRINKW-NEXT: addi.d $fp, $sp, 32 ; NOSHRINKW-NEXT: move $a1, $a0 ; NOSHRINKW-NEXT: st.d $a1, $fp, -24 # 8-byte Folded Spill ; NOSHRINKW-NEXT: addi.w $a1, $a0, 0 ; NOSHRINKW-NEXT: ori $a0, $zero, 32 ; NOSHRINKW-NEXT: bltu $a0, $a1, .LBB1_2 ; NOSHRINKW-NEXT: b .LBB1_1 ; NOSHRINKW-NEXT: .LBB1_1: # %if.then ; NOSHRINKW-NEXT: ld.d $a0, $fp, -24 # 8-byte Folded Reload ; NOSHRINKW-NEXT: bstrpick.d $a0, $a0, 31, 0 ; NOSHRINKW-NEXT: addi.d $a0, $a0, 15 ; NOSHRINKW-NEXT: bstrpick.d $a0, $a0, 32, 4 ; NOSHRINKW-NEXT: slli.d $a1, $a0, 4 ; NOSHRINKW-NEXT: move $a0, $sp ; NOSHRINKW-NEXT: sub.d $a0, $a0, $a1 ; NOSHRINKW-NEXT: move $sp, $a0 ; NOSHRINKW-NEXT: bl %plt(notdead) ; NOSHRINKW-NEXT: b .LBB1_2 ; NOSHRINKW-NEXT: .LBB1_2: # %if.end ; NOSHRINKW-NEXT: addi.d $sp, $fp, -32 ; NOSHRINKW-NEXT: ld.d $fp, $sp, 16 # 8-byte Folded Reload ; NOSHRINKW-NEXT: ld.d $ra, $sp, 24 # 8-byte Folded Reload ; NOSHRINKW-NEXT: addi.d $sp, $sp, 32 ; NOSHRINKW-NEXT: ret ; ; SHRINKW-LABEL: conditional_alloca: ; SHRINKW: # %bb.0: ; SHRINKW-NEXT: addi.w $a1, $a0, 0 ; SHRINKW-NEXT: ori $a2, $zero, 32 ; SHRINKW-NEXT: bltu $a2, $a1, .LBB1_2 ; SHRINKW-NEXT: # %bb.1: # %if.then ; SHRINKW-NEXT: addi.d $sp, $sp, -16 ; SHRINKW-NEXT: st.d $ra, $sp, 8 # 8-byte Folded Spill ; SHRINKW-NEXT: st.d $fp, $sp, 0 # 8-byte Folded Spill ; SHRINKW-NEXT: addi.d $fp, $sp, 16 ; SHRINKW-NEXT: bstrpick.d $a0, $a0, 31, 0 ; SHRINKW-NEXT: addi.d $a0, $a0, 15 ; SHRINKW-NEXT: bstrpick.d $a0, $a0, 32, 4 ; SHRINKW-NEXT: slli.d $a0, $a0, 4 ; SHRINKW-NEXT: sub.d $a0, $sp, $a0 ; SHRINKW-NEXT: move $sp, $a0 ; SHRINKW-NEXT: bl %plt(notdead) ; SHRINKW-NEXT: addi.d $sp, $fp, -16 ; SHRINKW-NEXT: ld.d $fp, $sp, 0 # 8-byte Folded Reload ; SHRINKW-NEXT: ld.d $ra, $sp, 8 # 8-byte Folded Reload ; SHRINKW-NEXT: addi.d $sp, $sp, 16 ; SHRINKW-NEXT: .LBB1_2: # %if.end ; SHRINKW-NEXT: ret %cmp = icmp ule i32 %n, 32 br i1 %cmp, label %if.then, label %if.end if.then: %addr = alloca i8, i32 %n call void @notdead(ptr %addr) br label %if.end if.end: ret void }