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-rw-r--r--test/CodeGen/volatile.c123
1 files changed, 115 insertions, 8 deletions
diff --git a/test/CodeGen/volatile.c b/test/CodeGen/volatile.c
index 1a996de..0dcdc15 100644
--- a/test/CodeGen/volatile.c
+++ b/test/CodeGen/volatile.c
@@ -1,10 +1,4 @@
-// RUN: %clang_cc1 -emit-llvm < %s -o %t
-// RUN: grep volatile %t | count 28
-// RUN: grep memcpy %t | count 7
-
-// The number 28 comes from the current codegen for volatile loads;
-// if this number changes, it's not necessarily something wrong, but
-// something has changed to affect volatile load/store codegen
+// RUN: %clang_cc1 -emit-llvm < %s | FileCheck %s
int S;
volatile int vS;
@@ -43,58 +37,171 @@ volatile_int vtS;
int main() {
int i;
-
+// CHECK: [[I:%[a-zA-Z0-9_.]+]] = alloca i32
// load
i=S;
+// CHECK: load i32* @S
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=vS;
+// CHECK: load volatile i32* @vS
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=*pS;
+// CHECK: [[PS_VAL:%[a-zA-Z0-9_.]+]] = load i32** @pS
+// CHECK: load i32* [[PS_VAL]]
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=*pvS;
+// CHECK: [[PVS_VAL:%[a-zA-Z0-9_.]+]] = load i32** @pvS
+// CHECK: load volatile i32* [[PVS_VAL]]
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=A[2];
+// CHECK: load i32* getelementptr {{.*}} @A
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=vA[2];
+// CHECK: load volatile i32* getelementptr {{.*}} @vA
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=F.x;
+// CHECK: load i32* getelementptr {{.*}} @F
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=vF.x;
+// CHECK: load volatile i32* getelementptr {{.*}} @vF
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=F2.x;
+// CHECK: load i32* getelementptr {{.*}} @F2
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=vF2.x;
+// CHECK: load volatile i32* getelementptr {{.*}} @vF2
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=vpF2->x;
+// CHECK: [[VPF2_VAL:%[a-zA-Z0-9_.]+]] = load {{%[a-zA-Z0-9_.]+}}** @vpF2
+// CHECK: [[ELT:%[a-zA-Z0-9_.]+]] = getelementptr {{.*}} [[VPF2_VAL]]
+// CHECK: load volatile i32* [[ELT]]
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=F3.x.y;
+// CHECK: load i32* getelementptr {{.*}} @F3
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=vF3.x.y;
+// CHECK: load volatile i32* getelementptr {{.*}} @vF3
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=BF.x;
+// CHECK: load i8* getelementptr {{.*}} @BF
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=vBF.x;
+// CHECK: load volatile i8* getelementptr {{.*}} @vBF
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=V[3];
+// CHECK: load <4 x i32>* @V
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=vV[3];
+// CHECK: load volatile <4 x i32>* @vV
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=VE.yx[1];
+// CHECK: load <4 x i32>* @VE
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=vVE.zy[1];
+// CHECK: load volatile <4 x i32>* @vVE
+// CHECK: store i32 {{.*}}, i32* [[I]]
i = aggFct().x; // Note: not volatile
+ // N.b. Aggregate return is extremely target specific, all we can
+ // really say here is that there probably shouldn't be a volatile
+ // load.
+// CHECK-NOT: load volatile
+// CHECK: store i32 {{.*}}, i32* [[I]]
i=vtS;
+// CHECK: load volatile i32* @vtS
+// CHECK: store i32 {{.*}}, i32* [[I]]
// store
S=i;
+// CHECK: load i32* [[I]]
+// CHECK: store i32 {{.*}}, i32* @S
vS=i;
+// CHECK: load i32* [[I]]
+// CHECK: store volatile i32 {{.*}}, i32* @vS
*pS=i;
+// CHECK: load i32* [[I]]
+// CHECK: [[PS_VAL:%[a-zA-Z0-9_.]+]] = load i32** @pS
+// CHECK: store i32 {{.*}}, i32* [[PS_VAL]]
*pvS=i;
+// CHECK: load i32* [[I]]
+// CHECK: [[PVS_VAL:%[a-zA-Z0-9_.]+]] = load i32** @pvS
+// CHECK: store volatile i32 {{.*}}, i32* [[PVS_VAL]]
A[2]=i;
+// CHECK: load i32* [[I]]
+// CHECK: store i32 {{.*}}, i32* getelementptr {{.*}} @A
vA[2]=i;
+// CHECK: load i32* [[I]]
+// CHECK: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vA
F.x=i;
+// CHECK: load i32* [[I]]
+// CHECK: store i32 {{.*}}, i32* getelementptr {{.*}} @F
vF.x=i;
+// CHECK: load i32* [[I]]
+// CHECK: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vF
F2.x=i;
+// CHECK: load i32* [[I]]
+// CHECK: store i32 {{.*}}, i32* getelementptr {{.*}} @F2
vF2.x=i;
+// CHECK: load i32* [[I]]
+// CHECK: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vF2
vpF2->x=i;
+// CHECK: load i32* [[I]]
+// CHECK: [[VPF2_VAL:%[a-zA-Z0-9_.]+]] = load {{%[a-zA-Z0-9._]+}}** @vpF2
+// CHECK: [[ELT:%[a-zA-Z0-9_.]+]] = getelementptr {{.*}} [[VPF2_VAL]]
+// CHECK: store volatile i32 {{.*}}, i32* [[ELT]]
vF3.x.y=i;
+// CHECK: load i32* [[I]]
+// CHECK: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vF3
BF.x=i;
+// CHECK: load i32* [[I]]
+// CHECK: load i8* getelementptr {{.*}} @BF
+// CHECK: store i8 {{.*}}, i8* getelementptr {{.*}} @BF
vBF.x=i;
+// CHECK: load i32* [[I]]
+// CHECK: load volatile i8* getelementptr {{.*}} @vBF
+// CHECK: store volatile i8 {{.*}}, i8* getelementptr {{.*}} @vBF
V[3]=i;
+// CHECK: load i32* [[I]]
+// CHECK: load <4 x i32>* @V
+// CHECK: store <4 x i32> {{.*}}, <4 x i32>* @V
vV[3]=i;
+// CHECK: load i32* [[I]]
+// CHECK: load volatile <4 x i32>* @vV
+// CHECK: store volatile <4 x i32> {{.*}}, <4 x i32>* @vV
vtS=i;
+// CHECK: load i32* [[I]]
+// CHECK: store volatile i32 {{.*}}, i32* @vtS
// other ops:
++S;
+// CHECK: load i32* @S
+// CHECK: store i32 {{.*}}, i32* @S
++vS;
+// CHECK: load volatile i32* @vS
+// CHECK: store volatile i32 {{.*}}, i32* @vS
i+=S;
+// CHECK: load i32* @S
+// CHECK: load i32* [[I]]
+// CHECK: store i32 {{.*}}, i32* [[I]]
i+=vS;
+// CHECK: load volatile i32* @vS
+// CHECK: load i32* [[I]]
+// CHECK: store i32 {{.*}}, i32* [[I]]
++vtS;
+// CHECK: load volatile i32* @vtS
+// CHECK: store volatile i32 {{.*}}, i32* @vtS
(void)vF2;
+ // From vF2 to a temporary
+// CHECK: call void @llvm.memcpy.{{.*}}(i8* %{{.*}}, i8* {{.*}} @vF2 {{.*}}, i1 true)
vF2 = vF2;
+ // vF2 to itself
+// CHECK: call void @llvm.memcpy.{{.*}}(i8* {{.*@vF2.*}}, i8* {{.*@vF2.*}}, i1 true)
vF2 = vF2 = vF2;
+ // vF2 to itself twice
+// CHECK: call void @llvm.memcpy.{{.*}}(i8* {{.*@vF2.*}}, i8* {{.*@vF2.*}}, i1 true)
+// CHECK: call void @llvm.memcpy.{{.*}}(i8* {{.*@vF2.*}}, i8* {{.*@vF2.*}}, i1 true)
vF2 = (vF2, vF2);
+ // vF2 to a temporary, then vF2 to itself
+// CHECK: call void @llvm.memcpy.{{.*}}(i8* %{{.*}}, i8* {{.*@vF2.*}}, i1 true)
+// CHECK: call void @llvm.memcpy.{{.*}}(i8* {{.*@vF2.*}}, i8* {{.*@vF2.*}}, i1 true)
}
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