mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-24 21:42:54 +02:00
e485ce96aa
Analysis, it has Analysis passes, and once NewGVN is made an Analysis, this removes the cross dependency from Analysis to Transform/Utils. NFC. llvm-svn: 299980
120 lines
3.5 KiB
LLVM
120 lines
3.5 KiB
LLVM
; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s
|
|
; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s
|
|
;
|
|
; Ensures that atomic loads count as MemoryDefs
|
|
|
|
; CHECK-LABEL: define i32 @foo
|
|
define i32 @foo(i32* %a, i32* %b) {
|
|
; CHECK: 1 = MemoryDef(liveOnEntry)
|
|
; CHECK-NEXT: store i32 4
|
|
store i32 4, i32* %a, align 4
|
|
; CHECK: 2 = MemoryDef(1)
|
|
; CHECK-NEXT: %1 = load atomic i32
|
|
%1 = load atomic i32, i32* %b acquire, align 4
|
|
; CHECK: MemoryUse(2)
|
|
; CHECK-NEXT: %2 = load i32
|
|
%2 = load i32, i32* %a, align 4
|
|
%3 = add i32 %1, %2
|
|
ret i32 %3
|
|
}
|
|
|
|
; CHECK-LABEL: define void @bar
|
|
define void @bar(i32* %a) {
|
|
; CHECK: MemoryUse(liveOnEntry)
|
|
; CHECK-NEXT: load atomic i32, i32* %a unordered, align 4
|
|
load atomic i32, i32* %a unordered, align 4
|
|
; CHECK: 1 = MemoryDef(liveOnEntry)
|
|
; CHECK-NEXT: load atomic i32, i32* %a monotonic, align 4
|
|
load atomic i32, i32* %a monotonic, align 4
|
|
; CHECK: 2 = MemoryDef(1)
|
|
; CHECK-NEXT: load atomic i32, i32* %a acquire, align 4
|
|
load atomic i32, i32* %a acquire, align 4
|
|
; CHECK: 3 = MemoryDef(2)
|
|
; CHECK-NEXT: load atomic i32, i32* %a seq_cst, align 4
|
|
load atomic i32, i32* %a seq_cst, align 4
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: define void @baz
|
|
define void @baz(i32* %a) {
|
|
; CHECK: 1 = MemoryDef(liveOnEntry)
|
|
; CHECK-NEXT: %1 = load atomic i32
|
|
%1 = load atomic i32, i32* %a acquire, align 4
|
|
; CHECK: MemoryUse(1)
|
|
; CHECK-NEXT: %2 = load atomic i32, i32* %a unordered, align 4
|
|
%2 = load atomic i32, i32* %a unordered, align 4
|
|
; CHECK: 2 = MemoryDef(1)
|
|
; CHECK-NEXT: %3 = load atomic i32, i32* %a monotonic, align 4
|
|
%3 = load atomic i32, i32* %a monotonic, align 4
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: define void @fences
|
|
define void @fences(i32* %a) {
|
|
; CHECK: 1 = MemoryDef(liveOnEntry)
|
|
; CHECK-NEXT: fence acquire
|
|
fence acquire
|
|
; CHECK: MemoryUse(1)
|
|
; CHECK-NEXT: %1 = load i32, i32* %a
|
|
%1 = load i32, i32* %a
|
|
|
|
; CHECK: 2 = MemoryDef(1)
|
|
; CHECK-NEXT: fence release
|
|
fence release
|
|
; CHECK: MemoryUse(2)
|
|
; CHECK-NEXT: %2 = load i32, i32* %a
|
|
%2 = load i32, i32* %a
|
|
|
|
; CHECK: 3 = MemoryDef(2)
|
|
; CHECK-NEXT: fence acq_rel
|
|
fence acq_rel
|
|
; CHECK: MemoryUse(3)
|
|
; CHECK-NEXT: %3 = load i32, i32* %a
|
|
%3 = load i32, i32* %a
|
|
|
|
; CHECK: 4 = MemoryDef(3)
|
|
; CHECK-NEXT: fence seq_cst
|
|
fence seq_cst
|
|
; CHECK: MemoryUse(4)
|
|
; CHECK-NEXT: %4 = load i32, i32* %a
|
|
%4 = load i32, i32* %a
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: define void @seq_cst_clobber
|
|
define void @seq_cst_clobber(i32* noalias %a, i32* noalias %b) {
|
|
; CHECK: 1 = MemoryDef(liveOnEntry)
|
|
; CHECK-NEXT: %1 = load atomic i32, i32* %a monotonic, align 4
|
|
load atomic i32, i32* %a monotonic, align 4
|
|
|
|
; CHECK: 2 = MemoryDef(1)
|
|
; CHECK-NEXT: %2 = load atomic i32, i32* %a seq_cst, align 4
|
|
load atomic i32, i32* %a seq_cst, align 4
|
|
|
|
; CHECK: 3 = MemoryDef(2)
|
|
; CHECK-NEXT: load atomic i32, i32* %a monotonic, align 4
|
|
load atomic i32, i32* %a monotonic, align 4
|
|
|
|
ret void
|
|
}
|
|
|
|
; Ensure that AA hands us MRI_Mod on unreorderable atomic ops.
|
|
;
|
|
; This test is a bit implementation-specific. In particular, it depends on that
|
|
; we pass cmpxchg-load queries to AA, without trying to reason about them on
|
|
; our own.
|
|
;
|
|
; If AA gets more aggressive, we can find another way.
|
|
;
|
|
; CHECK-LABEL: define void @check_aa_is_sane
|
|
define void @check_aa_is_sane(i32* noalias %a, i32* noalias %b) {
|
|
; CHECK: 1 = MemoryDef(liveOnEntry)
|
|
; CHECK-NEXT: cmpxchg i32* %a, i32 0, i32 1 acquire acquire
|
|
cmpxchg i32* %a, i32 0, i32 1 acquire acquire
|
|
; CHECK: MemoryUse(1)
|
|
; CHECK-NEXT: load i32, i32* %b, align 4
|
|
load i32, i32* %b, align 4
|
|
|
|
ret void
|
|
}
|