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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-attributes
; RUN: opt < %s -passes=function-attrs -S | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
; Base case, empty function
define void @test1() {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
; CHECK-LABEL: @test1(
; CHECK-NEXT: ret void
;
ret void
}
; Show the bottom up walk
define void @test2() {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
; CHECK-LABEL: @test2(
; CHECK-NEXT: call void @test1()
; CHECK-NEXT: ret void
;
call void @test1()
ret void
}
declare void @unknown() convergent
; Negative case with convergent function
define void @test3() convergent {
; CHECK: Function Attrs: convergent
; CHECK-LABEL: @test3(
; CHECK-NEXT: call void @unknown()
; CHECK-NEXT: ret void
;
call void @unknown()
ret void
}
define i32 @test4(i32 %a, i32 %b) {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
; CHECK-LABEL: @test4(
; CHECK-NEXT: [[ADD:%.*]] = add i32 [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: ret i32 [[A]]
;
%add = add i32 %a, %b
ret i32 %a
}
; negative case - explicit sync
define void @test5(ptr %p) {
; CHECK: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite)
; CHECK-LABEL: @test5(
; CHECK-NEXT: store atomic i8 0, ptr [[P:%.*]] seq_cst, align 1
; CHECK-NEXT: ret void
;
store atomic i8 0, ptr %p seq_cst, align 1
ret void
}
; negative case - explicit sync
define i8 @test6(ptr %p) {
; CHECK: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite)
; CHECK-LABEL: @test6(
; CHECK-NEXT: [[V:%.*]] = load atomic i8, ptr [[P:%.*]] seq_cst, align 1
; CHECK-NEXT: ret i8 [[V]]
;
%v = load atomic i8, ptr %p seq_cst, align 1
ret i8 %v
}
; negative case - explicit sync
define void @test7(ptr %p) {
; CHECK: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite)
; CHECK-LABEL: @test7(
; CHECK-NEXT: [[TMP1:%.*]] = atomicrmw add ptr [[P:%.*]], i8 0 seq_cst, align 1
; CHECK-NEXT: ret void
;
atomicrmw add ptr %p, i8 0 seq_cst, align 1
ret void
}
; negative case - explicit sync
define void @test8(ptr %p) {
; CHECK: Function Attrs: mustprogress nofree norecurse nounwind willreturn
; CHECK-LABEL: @test8(
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: ret void
;
fence seq_cst
ret void
}
; singlethread fences are okay
define void @test9(ptr %p) {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn
; CHECK-LABEL: @test9(
; CHECK-NEXT: fence syncscope("singlethread") seq_cst
; CHECK-NEXT: ret void
;
fence syncscope("singlethread") seq_cst
ret void
}
; atomic load with monotonic ordering
define i32 @load_monotonic(ptr nocapture readonly %0) norecurse nounwind uwtable {
; CHECK: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) uwtable
; CHECK-LABEL: @load_monotonic(
; CHECK-NEXT: [[TMP2:%.*]] = load atomic i32, ptr [[TMP0:%.*]] monotonic, align 4
; CHECK-NEXT: ret i32 [[TMP2]]
;
%2 = load atomic i32, ptr %0 monotonic, align 4
ret i32 %2
}
; atomic store with monotonic ordering.
define void @store_monotonic(ptr nocapture %0) norecurse nounwind uwtable {
; CHECK: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) uwtable
; CHECK-LABEL: @store_monotonic(
; CHECK-NEXT: store atomic i32 10, ptr [[TMP0:%.*]] monotonic, align 4
; CHECK-NEXT: ret void
;
store atomic i32 10, ptr %0 monotonic, align 4
ret void
}
; negative, should not deduce nosync
; atomic load with acquire ordering.
define i32 @load_acquire(ptr nocapture readonly %0) norecurse nounwind uwtable {
; CHECK: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) uwtable
; CHECK-LABEL: @load_acquire(
; CHECK-NEXT: [[TMP2:%.*]] = load atomic i32, ptr [[TMP0:%.*]] acquire, align 4
; CHECK-NEXT: ret i32 [[TMP2]]
;
%2 = load atomic i32, ptr %0 acquire, align 4
ret i32 %2
}
define i32 @load_unordered(ptr nocapture readonly %0) norecurse nounwind uwtable {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
; CHECK-LABEL: @load_unordered(
; CHECK-NEXT: [[TMP2:%.*]] = load atomic i32, ptr [[TMP0:%.*]] unordered, align 4
; CHECK-NEXT: ret i32 [[TMP2]]
;
%2 = load atomic i32, ptr %0 unordered, align 4
ret i32 %2
}
; atomic store with unordered ordering.
define void @store_unordered(ptr nocapture %0) norecurse nounwind uwtable {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable
; CHECK-LABEL: @store_unordered(
; CHECK-NEXT: store atomic i32 10, ptr [[TMP0:%.*]] unordered, align 4
; CHECK-NEXT: ret void
;
store atomic i32 10, ptr %0 unordered, align 4
ret void
}
; negative, should not deduce nosync
; atomic load with release ordering
define void @load_release(ptr nocapture %0) norecurse nounwind uwtable {
; CHECK: Function Attrs: nofree norecurse nounwind memory(argmem: readwrite, inaccessiblemem: readwrite) uwtable
; CHECK-LABEL: @load_release(
; CHECK-NEXT: store atomic volatile i32 10, ptr [[TMP0:%.*]] release, align 4
; CHECK-NEXT: ret void
;
store atomic volatile i32 10, ptr %0 release, align 4
ret void
}
; negative volatile, relaxed atomic
define void @load_volatile_release(ptr nocapture %0) norecurse nounwind uwtable {
; CHECK: Function Attrs: nofree norecurse nounwind memory(argmem: readwrite, inaccessiblemem: readwrite) uwtable
; CHECK-LABEL: @load_volatile_release(
; CHECK-NEXT: store atomic volatile i32 10, ptr [[TMP0:%.*]] release, align 4
; CHECK-NEXT: ret void
;
store atomic volatile i32 10, ptr %0 release, align 4
ret void
}
; volatile store.
define void @volatile_store(ptr %0) norecurse nounwind uwtable {
; CHECK: Function Attrs: nofree norecurse nounwind memory(argmem: readwrite, inaccessiblemem: readwrite) uwtable
; CHECK-LABEL: @volatile_store(
; CHECK-NEXT: store volatile i32 14, ptr [[TMP0:%.*]], align 4
; CHECK-NEXT: ret void
;
store volatile i32 14, ptr %0, align 4
ret void
}
; negative, should not deduce nosync
; volatile load.
define i32 @volatile_load(ptr %0) norecurse nounwind uwtable {
; CHECK: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite, inaccessiblemem: readwrite) uwtable
; CHECK-LABEL: @volatile_load(
; CHECK-NEXT: [[TMP2:%.*]] = load volatile i32, ptr [[TMP0:%.*]], align 4
; CHECK-NEXT: ret i32 [[TMP2]]
;
%2 = load volatile i32, ptr %0, align 4
ret i32 %2
}
; CHECK: Function Attrs: noinline nosync nounwind uwtable
; CHECK-NEXT: declare void @nosync_function()
declare void @nosync_function() noinline nounwind uwtable nosync
define void @call_nosync_function() nounwind uwtable noinline {
; CHECK: Function Attrs: noinline nosync nounwind uwtable
; CHECK-LABEL: @call_nosync_function(
; CHECK-NEXT: tail call void @nosync_function() #[[ATTR11:[0-9]+]]
; CHECK-NEXT: ret void
;
tail call void @nosync_function() noinline nounwind uwtable
ret void
}
; CHECK: Function Attrs: noinline nounwind uwtable
; CHECK-NEXT: declare void @might_sync()
declare void @might_sync() noinline nounwind uwtable
define void @call_might_sync() nounwind uwtable noinline {
; CHECK: Function Attrs: noinline nounwind uwtable
; CHECK-LABEL: @call_might_sync(
; CHECK-NEXT: tail call void @might_sync() #[[ATTR11]]
; CHECK-NEXT: ret void
;
tail call void @might_sync() noinline nounwind uwtable
ret void
}
declare void @llvm.memcpy(ptr %dest, ptr %src, i32 %len, i1 %isvolatile)
declare void @llvm.memset(ptr %dest, i8 %val, i32 %len, i1 %isvolatile)
; negative, checking volatile intrinsics.
define i32 @memcpy_volatile(ptr %ptr1, ptr %ptr2) {
; CHECK: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite, inaccessiblemem: readwrite)
; CHECK-LABEL: @memcpy_volatile(
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr [[PTR1:%.*]], ptr [[PTR2:%.*]], i32 8, i1 true)
; CHECK-NEXT: ret i32 4
;
call void @llvm.memcpy(ptr %ptr1, ptr %ptr2, i32 8, i1 1)
ret i32 4
}
; positive, non-volatile intrinsic.
define i32 @memset_non_volatile(ptr %ptr1, i8 %val) {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write)
; CHECK-LABEL: @memset_non_volatile(
; CHECK-NEXT: call void @llvm.memset.p0.i32(ptr [[PTR1:%.*]], i8 [[VAL:%.*]], i32 8, i1 false)
; CHECK-NEXT: ret i32 4
;
call void @llvm.memset(ptr %ptr1, i8 %val, i32 8, i1 0)
ret i32 4
}
; negative, inline assembly.
define i32 @inline_asm_test(i32 %x) {
; CHECK-LABEL: @inline_asm_test(
; CHECK-NEXT: [[TMP1:%.*]] = call i32 asm "bswap $0", "=r,r"(i32 [[X:%.*]])
; CHECK-NEXT: ret i32 4
;
call i32 asm "bswap $0", "=r,r"(i32 %x)
ret i32 4
}
declare void @readnone_test() convergent readnone
; negative. Convergent
define void @convergent_readnone(){
; CHECK: Function Attrs: nofree nosync memory(none)
; CHECK-LABEL: @convergent_readnone(
; CHECK-NEXT: call void @readnone_test()
; CHECK-NEXT: ret void
;
call void @readnone_test()
ret void
}
; CHECK: Function Attrs: nounwind
; CHECK-NEXT: declare void @llvm.x86.sse2.clflush(ptr)
declare void @llvm.x86.sse2.clflush(ptr)
@a = common global i32 0, align 4
; negative. Synchronizing intrinsic
define void @i_totally_sync() {
; CHECK: Function Attrs: nounwind
; CHECK-LABEL: @i_totally_sync(
; CHECK-NEXT: tail call void @llvm.x86.sse2.clflush(ptr @a)
; CHECK-NEXT: ret void
;
tail call void @llvm.x86.sse2.clflush(ptr @a)
ret void
}
declare float @llvm.cos(float %val) readnone
define float @cos_test(float %x) {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
; CHECK-LABEL: @cos_test(
; CHECK-NEXT: [[C:%.*]] = call float @llvm.cos.f32(float [[X:%.*]])
; CHECK-NEXT: ret float [[C]]
;
%c = call float @llvm.cos(float %x)
ret float %c
}
|
