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llgo/ssa: AtomicCmpXchg fix

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This commit is contained in:
xushiwei
2024-06-16 17:03:41 +08:00
parent 7d2f68c5e4
commit 4a3446a0a5
5 changed files with 31 additions and 26 deletions
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16
cl/_testlibc/atomic/in.go
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@@ -11,15 +11,15 @@ func main() {
atomic.Store(&v, 100)
c.Printf(c.Str("store: %ld\n"), atomic.Load(&v))
atomic.Add(&v, 1)
c.Printf(c.Str("v: %ld\n"), v)
ret := atomic.Add(&v, 1)
c.Printf(c.Str("ret: %ld, v: %ld\n"), ret, v)
atomic.CompareAndExchange(&v, 100, 102)
c.Printf(c.Str("v: %ld\n"), v)
ret, _ = atomic.CompareAndExchange(&v, 100, 102)
c.Printf(c.Str("ret: %ld vs 100, v: %ld\n"), ret, v)
atomic.CompareAndExchange(&v, 101, 102)
c.Printf(c.Str("v: %ld\n"), v)
ret, _ = atomic.CompareAndExchange(&v, 101, 102)
c.Printf(c.Str("ret: %ld vs 101, v: %ld\n"), ret, v)
atomic.Sub(&v, 1)
c.Printf(c.Str("v: %ld\n"), v)
ret = atomic.Sub(&v, 1)
c.Printf(c.Str("ret: %ld, v: %ld\n"), ret, v)
}

30
cl/_testlibc/atomic/out.ll
View File

@@ -5,10 +5,10 @@ source_filename = "main"
@__llgo_argc = global i32 0, align 4
@__llgo_argv = global ptr null, align 8
@0 = private unnamed_addr constant [12 x i8] c"store: %ld\0A\00", align 1
@1 = private unnamed_addr constant [8 x i8] c"v: %ld\0A\00", align 1
@2 = private unnamed_addr constant [8 x i8] c"v: %ld\0A\00", align 1
@3 = private unnamed_addr constant [8 x i8] c"v: %ld\0A\00", align 1
@4 = private unnamed_addr constant [8 x i8] c"v: %ld\0A\00", align 1
@1 = private unnamed_addr constant [18 x i8] c"ret: %ld, v: %ld\0A\00", align 1
@2 = private unnamed_addr constant [25 x i8] c"ret: %ld vs 100, v: %ld\0A\00", align 1
@3 = private unnamed_addr constant [25 x i8] c"ret: %ld vs 101, v: %ld\0A\00", align 1
@4 = private unnamed_addr constant [18 x i8] c"ret: %ld, v: %ld\0A\00", align 1
define void @main.init() {
_llgo_0:
@@ -35,16 +35,20 @@ _llgo_0:
%4 = call i32 (ptr, ...) @printf(ptr @0, i64 %3)
%5 = atomicrmw add ptr %2, i64 1 seq_cst, align 8
%6 = load i64, ptr %2, align 4
%7 = call i32 (ptr, ...) @printf(ptr @1, i64 %6)
%7 = call i32 (ptr, ...) @printf(ptr @1, i64 %5, i64 %6)
%8 = cmpxchg ptr %2, i64 100, i64 102 seq_cst seq_cst, align 8
%9 = load i64, ptr %2, align 4
%10 = call i32 (ptr, ...) @printf(ptr @2, i64 %9)
%11 = cmpxchg ptr %2, i64 101, i64 102 seq_cst seq_cst, align 8
%12 = load i64, ptr %2, align 4
%13 = call i32 (ptr, ...) @printf(ptr @3, i64 %12)
%14 = atomicrmw sub ptr %2, i64 1 seq_cst, align 8
%15 = load i64, ptr %2, align 4
%16 = call i32 (ptr, ...) @printf(ptr @4, i64 %15)
%9 = extractvalue { i64, i1 } %8, 0
%10 = extractvalue { i64, i1 } %8, 1
%11 = load i64, ptr %2, align 4
%12 = call i32 (ptr, ...) @printf(ptr @2, i64 %9, i64 %11)
%13 = cmpxchg ptr %2, i64 101, i64 102 seq_cst seq_cst, align 8
%14 = extractvalue { i64, i1 } %13, 0
%15 = extractvalue { i64, i1 } %13, 1
%16 = load i64, ptr %2, align 4
%17 = call i32 (ptr, ...) @printf(ptr @3, i64 %14, i64 %16)
%18 = atomicrmw sub ptr %2, i64 1 seq_cst, align 8
%19 = load i64, ptr %2, align 4
%20 = call i32 (ptr, ...) @printf(ptr @4, i64 %18, i64 %19)
ret i32 0
}