; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s ; Checks if "%7 = add nuw nsw i64 %4, %2" is moved before the last call ; to minimize live-range. define i64 @test(i1 %a, i64 %r1, i64 %r2, i64 %s1, i64 %s2, i64 %t1, i64 %t2) { ; CHECK-LABEL: test: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: pushq %r15 ; CHECK-NEXT: .cfi_def_cfa_offset 16 ; CHECK-NEXT: pushq %r14 ; CHECK-NEXT: .cfi_def_cfa_offset 24 ; CHECK-NEXT: pushq %rbx ; CHECK-NEXT: .cfi_def_cfa_offset 32 ; CHECK-NEXT: .cfi_offset %rbx, -32 ; CHECK-NEXT: .cfi_offset %r14, -24 ; CHECK-NEXT: .cfi_offset %r15, -16 ; CHECK-NEXT: movq %rcx, %r14 ; CHECK-NEXT: movl $4, %r15d ; CHECK-NEXT: testb $1, %dil ; CHECK-NEXT: je .LBB0_2 ; CHECK-NEXT: # %bb.1: # %then ; CHECK-NEXT: movq {{[0-9]+}}(%rsp), %r9 ; CHECK-NEXT: movl $10, %r15d ; CHECK-NEXT: movq %rdx, %rsi ; CHECK-NEXT: movq %r8, %r14 ; CHECK-NEXT: .LBB0_2: # %else ; CHECK-NEXT: addq %r9, %r14 ; CHECK-NEXT: addq %rsi, %r15 ; CHECK-NEXT: callq _Z3foov ; CHECK-NEXT: movl %eax, %ebx ; CHECK-NEXT: addq %r15, %rbx ; CHECK-NEXT: callq _Z3foov ; CHECK-NEXT: movl %eax, %r15d ; CHECK-NEXT: addq %rbx, %r15 ; CHECK-NEXT: callq _Z3foov ; CHECK-NEXT: movl %eax, %eax ; CHECK-NEXT: addq %r15, %rax ; CHECK-NEXT: addq %r14, %rax ; CHECK-NEXT: popq %rbx ; CHECK-NEXT: .cfi_def_cfa_offset 24 ; CHECK-NEXT: popq %r14 ; CHECK-NEXT: .cfi_def_cfa_offset 16 ; CHECK-NEXT: popq %r15 ; CHECK-NEXT: .cfi_def_cfa_offset 8 ; CHECK-NEXT: retq entry: br i1 %a, label %then, label %else then: br label %else else: %0 = phi i64 [ 4, %entry ], [ 10, %then ] %r = phi i64 [ %r1, %entry ], [ %r2, %then ] %s = phi i64 [ %s1, %entry ], [ %s2, %then ] %t = phi i64 [ %t1, %entry ], [ %t2, %then ] %1 = tail call i32 @_Z3foov() %2 = zext i32 %1 to i64 %3 = tail call i32 @_Z3foov() %4 = zext i32 %3 to i64 %5 = tail call i32 @_Z3foov() %6 = zext i32 %5 to i64 %7 = add nuw nsw i64 %0, %r tail call void @llvm.dbg.value(metadata i64 %7, i64 0, metadata !5, metadata !DIExpression()), !dbg !6 %8 = add nuw nsw i64 %2, %7 %9 = add nuw nsw i64 %4, %8 %10 = add nuw nsw i64 %6, %9 %11 = add nuw nsw i64 %s, %t tail call void @llvm.dbg.value(metadata i64 %11, i64 0, metadata !5, metadata !DIExpression()), !dbg !6 %12 = add nuw nsw i64 %10, %11 ret i64 %12 } declare i32 @_Z3foov() declare void @llvm.dbg.value(metadata, i64, metadata, metadata) !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!1, !2} !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, emissionKind: FullDebug) !1 = !{i32 2, !"Dwarf Version", i32 4} !2 = !{i32 2, !"Debug Info Version", i32 3} !3 = !DIFile(filename: "a.c", directory: "./") !4 = distinct !DISubprogram(name: "test", scope: !3, unit: !0) !5 = !DILocalVariable(name: "x", scope: !4) !6 = !DILocation(line: 4, scope: !4)