Clang :: CodeGen/builtins-arm-exclusive.c

gistfile1.ll

; ModuleID = '/home/chapuni/llvm-project/clang/test/CodeGen/builtins-arm-exclusive.c'
target datalayout = "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbv7--linux-gnueabi"

%struct.Simple = type { i8, i8 }

; Function Attrs: nounwind
define i32 @atomic_inc(i32* %addr) #0 {
  br label %1

; <label>:1                                       ; preds = %1, %0
  %2 = tail call i32 @llvm.arm.ldrex.p0i32(i32* %addr)
  %3 = add nsw i32 %2, 1
  %4 = tail call i32 @llvm.arm.strex.p0i32(i32 %3, i32* %addr)
  %5 = icmp eq i32 %4, 0
  br i1 %5, label %6, label %1

; <label>:6                                       ; preds = %1
  ret i32 %2
}

; Function Attrs: nounwind
declare i32 @llvm.arm.ldrex.p0i32(i32*) #1

; Function Attrs: nounwind
declare i32 @llvm.arm.strex.p0i32(i32, i32*) #1

; Function Attrs: nounwind
define i32 @test_ldrex(i8* %addr, i64* %addr64, float* %addrfloat) #0 {
  %1 = tail call i32 @llvm.arm.ldrex.p0i8(i8* %addr)
  %2 = and i32 %1, 255
  %3 = bitcast i8* %addr to i16*
  %4 = tail call i32 @llvm.arm.ldrex.p0i16(i16* %3)
  %sext = shl i32 %4, 16
  %5 = ashr exact i32 %sext, 16
  %6 = bitcast i8* %addr to i32*
  %7 = tail call i32 @llvm.arm.ldrex.p0i32(i32* %6)
  %8 = tail call { i32, i32 } @llvm.arm.ldrexd(i8* %addr)
  %9 = extractvalue { i32, i32 } %8, 0
  %10 = bitcast i64* %addr64 to i8*
  %11 = tail call { i32, i32 } @llvm.arm.ldrexd(i8* %10)
  %12 = extractvalue { i32, i32 } %11, 0
  %13 = add i32 %7, %2
  %14 = add i32 %13, %5
  %15 = add i32 %14, %9
  %16 = add i32 %15, %12
  %17 = bitcast float* %addrfloat to i32*
  %18 = tail call i32 @llvm.arm.ldrex.p0i32(i32* %17)
  %19 = bitcast i32 %18 to float
  %20 = sitofp i32 %16 to float
  %21 = fadd float %19, %20
  %22 = fptosi float %21 to i32
  %23 = tail call { i32, i32 } @llvm.arm.ldrexd(i8* %addr)
  %24 = extractvalue { i32, i32 } %23, 1
  %25 = zext i32 %24 to i64
  %26 = shl nuw i64 %25, 32
  %27 = or i64 %26, %25
  %28 = bitcast i64 %27 to double
  %29 = sitofp i32 %22 to double
  %30 = fadd double %29, %28
  %31 = fptosi double %30 to i32
  %32 = tail call i32 @llvm.arm.ldrex.p0i32(i32* %6)
  %33 = inttoptr i32 %32 to i32*
  %34 = load i32* %33, align 4, !tbaa !1
  %35 = tail call i32 @llvm.arm.ldrex.p0i32(i32* %6)
  %36 = inttoptr i32 %35 to %struct.Simple*
  %37 = getelementptr inbounds %struct.Simple* %36, i32 0, i32 0
  %38 = load i8* %37, align 1, !tbaa !5
  %39 = zext i8 %38 to i32
  %40 = add i32 %39, %34
  %41 = add i32 %40, %31
  ret i32 %41
}

; Function Attrs: nounwind
declare i32 @llvm.arm.ldrex.p0i8(i8*) #1

; Function Attrs: nounwind
declare i32 @llvm.arm.ldrex.p0i16(i16*) #1

; Function Attrs: nounwind
declare { i32, i32 } @llvm.arm.ldrexd(i8*) #1

; Function Attrs: nounwind
define i32 @test_strex(i8* %addr) #0 {
  %var = alloca i16, align 4
  store i16 0, i16* %var, align 4
  %1 = call i32 @llvm.arm.strex.p0i8(i32 4, i8* %addr)
  %2 = bitcast i8* %addr to i16*
  %3 = call i32 @llvm.arm.strex.p0i16(i32 42, i16* %2)
  %4 = or i32 %3, %1
  %5 = bitcast i8* %addr to i32*
  %6 = call i32 @llvm.arm.strex.p0i32(i32 42, i32* %5)
  %7 = or i32 %4, %6
  %8 = call i32 @llvm.arm.strexd(i32 42, i32 0, i8* %addr)
  %9 = or i32 %7, %8
  %10 = call i32 @llvm.arm.strex.p0i32(i32 1076754509, i32* %5)
  %11 = or i32 %9, %10
  %12 = call i32 @llvm.arm.strexd(i32 -266631570, i32 1074340345, i8* %addr)
  %13 = or i32 %11, %12
  %14 = ptrtoint i16* %var to i32
  %15 = call i32 @llvm.arm.strex.p0i32(i32 %14, i32* %5)
  %16 = or i32 %13, %15
  ret i32 %16
}

; Function Attrs: nounwind
declare i32 @llvm.arm.strex.p0i8(i32, i8*) #1

; Function Attrs: nounwind
declare i32 @llvm.arm.strex.p0i16(i32, i16*) #1

; Function Attrs: nounwind
declare i32 @llvm.arm.strexd(i32, i32, i8*) #1

; Function Attrs: nounwind
define void @test_clrex() #0 {
  tail call void @llvm.arm.clrex()
  ret void
}

; Function Attrs: nounwind
declare void @llvm.arm.clrex() #1

attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind }

!llvm.ident = !{!0}

!0 = metadata !{metadata !"clang version 3.5.0 "}
!1 = metadata !{metadata !2, metadata !2, i64 0}
!2 = metadata !{metadata !"int", metadata !3, i64 0}
!3 = metadata !{metadata !"omnipotent char", metadata !4, i64 0}
!4 = metadata !{metadata !"Simple C/C++ TBAA"}
!5 = metadata !{metadata !6, metadata !3, i64 0}
!6 = metadata !{metadata !"Simple", metadata !3, i64 0, metadata !3, i64 1}