derek.holloway
7502bf64a4
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91 lines
3.0 KiB
LLVM
91 lines
3.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=haswell | FileCheck %s
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; Checks if "%7 = add nuw nsw i64 %4, %2" is moved before the last call
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; to minimize live-range.
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define i64 @test(i1 %a, i64 %r1, i64 %r2, i64 %s1, i64 %s2, i64 %t1, i64 %t2) {
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; CHECK-LABEL: test:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: pushq %r15
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: pushq %r14
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; CHECK-NEXT: .cfi_def_cfa_offset 24
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; CHECK-NEXT: pushq %rbx
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; CHECK-NEXT: .cfi_def_cfa_offset 32
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; CHECK-NEXT: .cfi_offset %rbx, -32
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; CHECK-NEXT: .cfi_offset %r14, -24
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; CHECK-NEXT: .cfi_offset %r15, -16
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; CHECK-NEXT: movq %rcx, %rbx
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; CHECK-NEXT: movl $4, %r14d
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; CHECK-NEXT: testb $1, %dil
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; CHECK-NEXT: je .LBB0_2
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; CHECK-NEXT: # %bb.1: # %then
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; CHECK-NEXT: movq {{[0-9]+}}(%rsp), %r9
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; CHECK-NEXT: movl $10, %r14d
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; CHECK-NEXT: movq %rdx, %rsi
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; CHECK-NEXT: movq %r8, %rbx
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; CHECK-NEXT: .LBB0_2: # %else
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; CHECK-NEXT: addq %r9, %rbx
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; CHECK-NEXT: addq %rsi, %r14
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; CHECK-NEXT: callq _Z3foov@PLT
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; CHECK-NEXT: movl %eax, %r15d
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; CHECK-NEXT: addq %r14, %r15
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; CHECK-NEXT: callq _Z3foov@PLT
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; CHECK-NEXT: movl %eax, %r14d
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; CHECK-NEXT: callq _Z3foov@PLT
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; CHECK-NEXT: movl %eax, %eax
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; CHECK-NEXT: addq %r14, %rax
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; CHECK-NEXT: addq %r15, %rax
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; CHECK-NEXT: addq %rbx, %rax
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; CHECK-NEXT: popq %rbx
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; CHECK-NEXT: .cfi_def_cfa_offset 24
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; CHECK-NEXT: popq %r14
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: popq %r15
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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entry:
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br i1 %a, label %then, label %else
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then:
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br label %else
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else:
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%0 = phi i64 [ 4, %entry ], [ 10, %then ]
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%r = phi i64 [ %r1, %entry ], [ %r2, %then ]
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%s = phi i64 [ %s1, %entry ], [ %s2, %then ]
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%t = phi i64 [ %t1, %entry ], [ %t2, %then ]
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%1 = tail call i32 @_Z3foov()
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%2 = zext i32 %1 to i64
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%3 = tail call i32 @_Z3foov()
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%4 = zext i32 %3 to i64
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%5 = tail call i32 @_Z3foov()
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%6 = zext i32 %5 to i64
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%7 = add nuw nsw i64 %0, %r
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tail call void @llvm.dbg.value(metadata i64 %7, i64 0, metadata !5, metadata !DIExpression()), !dbg !6
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%8 = add nuw nsw i64 %2, %7
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%9 = add nuw nsw i64 %4, %8
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%10 = add nuw nsw i64 %6, %9
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%11 = add nuw nsw i64 %s, %t
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tail call void @llvm.dbg.value(metadata i64 %11, i64 0, metadata !5, metadata !DIExpression()), !dbg !6
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%12 = add nuw nsw i64 %10, %11
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ret i64 %12
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}
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declare i32 @_Z3foov()
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!1, !2}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, emissionKind: FullDebug)
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!1 = !{i32 2, !"Dwarf Version", i32 4}
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!2 = !{i32 2, !"Debug Info Version", i32 3}
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!3 = !DIFile(filename: "a.c", directory: "./")
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!4 = distinct !DISubprogram(name: "test", scope: !3, unit: !0, type: !8)
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!5 = !DILocalVariable(name: "x", scope: !4)
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!6 = !DILocation(line: 4, scope: !4)
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!7 = !{null}
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!8 = !DISubroutineType(types: !7)
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