d3c543703d
My previous attempt was extremely deficient, allowing more volatiles to be introduced and not even checking all of the ones that are present. This attempt doesn't try to keep track of the values stored or offsets within particular objects, just that the correct objects are accessed in a correctly volatile manner throughout. llvm-svn: 174700
208 lines
6.1 KiB
C
208 lines
6.1 KiB
C
// RUN: %clang_cc1 -emit-llvm < %s | FileCheck %s
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int S;
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volatile int vS;
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int* pS;
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volatile int* pvS;
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int A[10];
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volatile int vA[10];
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struct { int x; } F;
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struct { volatile int x; } vF;
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struct { int x; } F2;
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volatile struct { int x; } vF2;
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volatile struct { int x; } *vpF2;
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struct { struct { int y; } x; } F3;
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volatile struct { struct { int y; } x; } vF3;
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struct { int x:3; } BF;
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struct { volatile int x:3; } vBF;
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typedef int v4si __attribute__ ((vector_size (16)));
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v4si V;
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volatile v4si vV;
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typedef __attribute__(( ext_vector_type(4) )) int extv4;
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extv4 VE;
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volatile extv4 vVE;
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volatile struct {int x;} aggFct(void);
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typedef volatile int volatile_int;
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volatile_int vtS;
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int main() {
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int i;
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// CHECK: [[I:%[a-zA-Z0-9_.]+]] = alloca i32
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// load
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i=S;
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// CHECK: load i32* @S
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=vS;
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// CHECK: load volatile i32* @vS
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=*pS;
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// CHECK: [[PS_VAL:%[a-zA-Z0-9_.]+]] = load i32** @pS
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// CHECK: load i32* [[PS_VAL]]
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=*pvS;
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// CHECK: [[PVS_VAL:%[a-zA-Z0-9_.]+]] = load i32** @pvS
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// CHECK: load volatile i32* [[PVS_VAL]]
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=A[2];
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// CHECK: load i32* getelementptr {{.*}} @A
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=vA[2];
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// CHECK: load volatile i32* getelementptr {{.*}} @vA
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=F.x;
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// CHECK: load i32* getelementptr {{.*}} @F
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=vF.x;
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// CHECK: load volatile i32* getelementptr {{.*}} @vF
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=F2.x;
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// CHECK: load i32* getelementptr {{.*}} @F2
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=vF2.x;
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// CHECK: load volatile i32* getelementptr {{.*}} @vF2
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=vpF2->x;
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// CHECK: [[VPF2_VAL:%[a-zA-Z0-9_.]+]] = load {{%[a-zA-Z0-9_.]+}}** @vpF2
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// CHECK: [[ELT:%[a-zA-Z0-9_.]+]] = getelementptr {{.*}} [[VPF2_VAL]]
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// CHECK: load volatile i32* [[ELT]]
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=F3.x.y;
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// CHECK: load i32* getelementptr {{.*}} @F3
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=vF3.x.y;
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// CHECK: load volatile i32* getelementptr {{.*}} @vF3
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=BF.x;
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// CHECK: load i8* getelementptr {{.*}} @BF
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=vBF.x;
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// CHECK: load volatile i8* getelementptr {{.*}} @vBF
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=V[3];
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// CHECK: load <4 x i32>* @V
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=vV[3];
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// CHECK: load volatile <4 x i32>* @vV
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=VE.yx[1];
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// CHECK: load <4 x i32>* @VE
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=vVE.zy[1];
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// CHECK: load volatile <4 x i32>* @vVE
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i = aggFct().x; // Note: not volatile
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// N.b. Aggregate return is extremely target specific, all we can
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// really say here is that there probably shouldn't be a volatile
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// load.
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// CHECK-NOT: load volatile
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i=vtS;
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// CHECK: load volatile i32* @vtS
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// CHECK: store i32 {{.*}}, i32* [[I]]
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// store
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S=i;
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// CHECK: load i32* [[I]]
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// CHECK: store i32 {{.*}}, i32* @S
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vS=i;
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// CHECK: load i32* [[I]]
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// CHECK: store volatile i32 {{.*}}, i32* @vS
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*pS=i;
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// CHECK: load i32* [[I]]
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// CHECK: [[PS_VAL:%[a-zA-Z0-9_.]+]] = load i32** @pS
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// CHECK: store i32 {{.*}}, i32* [[PS_VAL]]
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*pvS=i;
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// CHECK: load i32* [[I]]
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// CHECK: [[PVS_VAL:%[a-zA-Z0-9_.]+]] = load i32** @pvS
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// CHECK: store volatile i32 {{.*}}, i32* [[PVS_VAL]]
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A[2]=i;
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// CHECK: load i32* [[I]]
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// CHECK: store i32 {{.*}}, i32* getelementptr {{.*}} @A
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vA[2]=i;
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// CHECK: load i32* [[I]]
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// CHECK: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vA
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F.x=i;
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// CHECK: load i32* [[I]]
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// CHECK: store i32 {{.*}}, i32* getelementptr {{.*}} @F
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vF.x=i;
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// CHECK: load i32* [[I]]
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// CHECK: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vF
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F2.x=i;
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// CHECK: load i32* [[I]]
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// CHECK: store i32 {{.*}}, i32* getelementptr {{.*}} @F2
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vF2.x=i;
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// CHECK: load i32* [[I]]
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// CHECK: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vF2
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vpF2->x=i;
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// CHECK: load i32* [[I]]
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// CHECK: [[VPF2_VAL:%[a-zA-Z0-9_.]+]] = load {{%[a-zA-Z0-9._]+}}** @vpF2
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// CHECK: [[ELT:%[a-zA-Z0-9_.]+]] = getelementptr {{.*}} [[VPF2_VAL]]
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// CHECK: store volatile i32 {{.*}}, i32* [[ELT]]
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vF3.x.y=i;
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// CHECK: load i32* [[I]]
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// CHECK: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vF3
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BF.x=i;
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// CHECK: load i32* [[I]]
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// CHECK: load i8* getelementptr {{.*}} @BF
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// CHECK: store i8 {{.*}}, i8* getelementptr {{.*}} @BF
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vBF.x=i;
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// CHECK: load i32* [[I]]
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// CHECK: load volatile i8* getelementptr {{.*}} @vBF
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// CHECK: store volatile i8 {{.*}}, i8* getelementptr {{.*}} @vBF
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V[3]=i;
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// CHECK: load i32* [[I]]
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// CHECK: load <4 x i32>* @V
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// CHECK: store <4 x i32> {{.*}}, <4 x i32>* @V
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vV[3]=i;
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// CHECK: load i32* [[I]]
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// CHECK: load volatile <4 x i32>* @vV
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// CHECK: store volatile <4 x i32> {{.*}}, <4 x i32>* @vV
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vtS=i;
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// CHECK: load i32* [[I]]
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// CHECK: store volatile i32 {{.*}}, i32* @vtS
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// other ops:
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++S;
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// CHECK: load i32* @S
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// CHECK: store i32 {{.*}}, i32* @S
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++vS;
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// CHECK: load volatile i32* @vS
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// CHECK: store volatile i32 {{.*}}, i32* @vS
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i+=S;
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// CHECK: load i32* @S
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// CHECK: load i32* [[I]]
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// CHECK: store i32 {{.*}}, i32* [[I]]
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i+=vS;
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// CHECK: load volatile i32* @vS
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// CHECK: load i32* [[I]]
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// CHECK: store i32 {{.*}}, i32* [[I]]
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++vtS;
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// CHECK: load volatile i32* @vtS
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// CHECK: store volatile i32 {{.*}}, i32* @vtS
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(void)vF2;
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// From vF2 to a temporary
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// CHECK: call void @llvm.memcpy.{{.*}}(i8* %{{.*}}, i8* {{.*}} @vF2 {{.*}}, i1 true)
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vF2 = vF2;
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// vF2 to itself
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// CHECK: call void @llvm.memcpy.{{.*}}(i8* {{.*@vF2.*}}, i8* {{.*@vF2.*}}, i1 true)
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vF2 = vF2 = vF2;
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// vF2 to itself twice
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// CHECK: call void @llvm.memcpy.{{.*}}(i8* {{.*@vF2.*}}, i8* {{.*@vF2.*}}, i1 true)
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// CHECK: call void @llvm.memcpy.{{.*}}(i8* {{.*@vF2.*}}, i8* {{.*@vF2.*}}, i1 true)
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vF2 = (vF2, vF2);
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// vF2 to a temporary, then vF2 to itself
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// CHECK: call void @llvm.memcpy.{{.*}}(i8* %{{.*}}, i8* {{.*@vF2.*}}, i1 true)
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// CHECK: call void @llvm.memcpy.{{.*}}(i8* {{.*@vF2.*}}, i8* {{.*@vF2.*}}, i1 true)
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}
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