; RUN: llc -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -stop-after=x86-optimize-LEAs -experimental-debug-variable-locations=false < %s \ ; RUN: | FileCheck %s --check-prefix=NORMAL ; RUN: llc -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -stop-after=x86-optimize-LEAs -experimental-debug-variable-locations < %s \ ; RUN: | FileCheck %s --check-prefix=INSTRREF ; The LEA optimization pass used to crash on this testcase. ; This test case used to trigger: ; ; assert(MRI->use_empty(LastVReg) && ; "The LEA's def register must have no uses"); ; CHECK: LEA64r ; CHECK-NOT: LEA64r ; NORMAL: DBG_VALUE_LIST ; INSTRREF: DBG_INSTR_REF target triple = "x86_64-unknown-linux-gnu" %t10 = type { ptr, [32 x i8] } define void @foo() { bb_entry: %tmp11 = alloca [0 x [0 x i32]], i32 0, align 4 %i = alloca %t10, align 8 %i1 = alloca %t10, align 8 br label %bb_8 bb_8: ; preds = %bb_last, %bb_entry br i1 undef, label %bb_last, label %bb_mid bb_mid: ; preds = %bb_8 %i4 = getelementptr inbounds %t10, ptr %i1, i64 0, i32 1, i64 32 %i6 = getelementptr inbounds %t10, ptr %i, i64 0, i32 1, i64 32 call void @llvm.lifetime.start.p0(i64 0, ptr nonnull %i1) %v21 = call i64 @llvm.ctlz.i64(i64 undef, i1 false) call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull dereferenceable(16) null, ptr noundef nonnull align 8 dereferenceable(16) %i4, i64 16, i1 false) call void @llvm.dbg.value(metadata !DIArgList(ptr %i4, ptr %i4), metadata !4, metadata !DIExpression(DW_OP_LLVM_arg, 0)), !dbg !9 call void @llvm.lifetime.end.p0(i64 0, ptr nonnull %i1) call void @llvm.lifetime.start.p0(i64 0, ptr nonnull %i) call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull dereferenceable(16) null, ptr noundef nonnull align 8 dereferenceable(16) %i6, i64 16, i1 false) call void @llvm.lifetime.end.p0(i64 0, ptr nonnull %i) br label %bb_last bb_last: ; preds = %bb_mid, %bb_8 call void @llvm.lifetime.start.p0(i64 0, ptr nonnull %tmp11) call void undef(ptr null, ptr null, ptr null, i32 0, ptr nonnull %tmp11) call void @llvm.lifetime.end.p0(i64 0, ptr nonnull %tmp11) br label %bb_8 } declare i64 @llvm.ctlz.i64(i64, i1 immarg) declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) declare void @llvm.dbg.value(metadata, metadata, metadata) !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!2} !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug) !1 = !DIFile(filename: "n", directory: "/proc/self/cwd", checksumkind: CSK_MD5, checksum: "e588179fedd8fcdfada963f2434cb950") !2 = !{i32 2, !"Debug Info Version", i32 3} !3 = !{!"function_entry_count", i64 2423} !4 = !DILocalVariable(name: "r", scope: !5, file: !6, line: 93) !5 = distinct !DISubprogram(name: "c", scope: !7, file: !6, line: 92, spFlags: DISPFlagDefinition, unit: !0) !6 = !DIFile(filename: "a", directory: "/proc/self/cwd") !7 = !DINamespace(name: "u", scope: !8) !8 = !DINamespace(name: "s", scope: null) !9 = !DILocation(line: 0, scope: !5)