Gericom/teak-llvm
1
Fork 0
mirror of https://github.com/Gericom/teak-llvm.git synced 2025-06-19 11:35:51 -04:00
Code Issues Actions Packages Projects Releases Wiki Activity
master
teak-llvm/clang/test/CodeGen/volatile.c
Daniel Neilson 6e938effaa Change memcpy/memove/memset to have dest and source alignment attributes (Step 1). 
Summary:
  Upstream LLVM is changing the the prototypes of the @llvm.memcpy/memmove/memset
intrinsics. This change updates the Clang tests for this change.

  The @llvm.memcpy/memmove/memset intrinsics currently have an explicit argument
which is required to be a constant integer. It represents the alignment of the
dest (and source), and so must be the minimum of the actual alignment of the
two.

 This change removes the alignment argument in favour of placing the alignment
attribute on the source and destination pointers of the memory intrinsic call.

 For example, code which used to read:
   call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 100, i32 4, i1 false)
will now read
   call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 %dest, i8* align 4 %src, i32 100, i1 false)

 At this time the source and destination alignments must be the same (Step 1).
Step 2 of the change, to be landed shortly, will relax that contraint and allow
the source and destination to have different alignments.

llvm-svn: 322964
2018-01-19 17:12:54 +00:00

215 lines
7.0 KiB
C
Raw Permalink Blame History

// RUN: %clang_cc1 -triple=%itanium_abi_triple -emit-llvm < %s | FileCheck %s -check-prefix CHECK -check-prefix CHECK-IT
// RUN: %clang_cc1 -triple=%ms_abi_triple -emit-llvm < %s | FileCheck %s -check-prefix CHECK -check-prefix CHECK-MS
int S;
volatile int vS;
int* pS;
volatile int* pvS;
int A[10];
volatile int vA[10];
struct { int x; } F;
struct { volatile int x; } vF;
struct { int x; } F2;
volatile struct { int x; } vF2;
volatile struct { int x; } *vpF2;
struct { struct { int y; } x; } F3;
volatile struct { struct { int y; } x; } vF3;
struct { int x:3; } BF;
struct { volatile int x:3; } vBF;
typedef int v4si __attribute__ ((vector_size (16)));
v4si V;
volatile v4si vV;
typedef __attribute__(( ext_vector_type(4) )) int extv4;
extv4 VE;
volatile extv4 vVE;
volatile struct {int x;} aggFct(void);
typedef volatile int volatile_int;
volatile_int vtS;
int main() {
int i;
// CHECK: [[I:%[a-zA-Z0-9_.]+]] = alloca i32
// load
i=S;
// CHECK: load i32, i32* @S
// CHECK: store i32 {{.*}}, i32* [[I]]
i=vS;
// CHECK: load volatile i32, i32* @vS
// CHECK: store i32 {{.*}}, i32* [[I]]
i=*pS;
// CHECK: [[PS_VAL:%[a-zA-Z0-9_.]+]] = load i32*, i32** @pS
// CHECK: load i32, i32* [[PS_VAL]]
// CHECK: store i32 {{.*}}, i32* [[I]]
i=*pvS;
// CHECK: [[PVS_VAL:%[a-zA-Z0-9_.]+]] = load i32*, i32** @pvS
// CHECK: load volatile i32, i32* [[PVS_VAL]]
// CHECK: store i32 {{.*}}, i32* [[I]]
i=A[2];
// CHECK: load i32, i32* getelementptr {{.*}} @A
// CHECK: store i32 {{.*}}, i32* [[I]]
i=vA[2];
// CHECK: load volatile i32, i32* getelementptr {{.*}} @vA
// CHECK: store i32 {{.*}}, i32* [[I]]
i=F.x;
// CHECK: load i32, i32* getelementptr {{.*}} @F
// CHECK: store i32 {{.*}}, i32* [[I]]
i=vF.x;
// CHECK: load volatile i32, i32* getelementptr {{.*}} @vF
// CHECK: store i32 {{.*}}, i32* [[I]]
i=F2.x;
// CHECK: load i32, i32* getelementptr {{.*}} @F2
// CHECK: store i32 {{.*}}, i32* [[I]]
i=vF2.x;
// CHECK: load volatile i32, i32* getelementptr {{.*}} @vF2
// CHECK: store i32 {{.*}}, i32* [[I]]
i=vpF2->x;
// CHECK: [[VPF2_VAL:%[a-zA-Z0-9_.]+]] = load {{%[a-zA-Z0-9_.]+}}*, {{%[a-zA-Z0-9_.]+}}** @vpF2
// CHECK: [[ELT:%[a-zA-Z0-9_.]+]] = getelementptr {{.*}} [[VPF2_VAL]]
// CHECK: load volatile i32, i32* [[ELT]]
// CHECK: store i32 {{.*}}, i32* [[I]]
i=F3.x.y;
// CHECK: load i32, i32* getelementptr {{.*}} @F3
// CHECK: store i32 {{.*}}, i32* [[I]]
i=vF3.x.y;
// CHECK: load volatile i32, i32* getelementptr {{.*}} @vF3
// CHECK: store i32 {{.*}}, i32* [[I]]
i=BF.x;
// CHECK-IT: load i8, i8* getelementptr {{.*}} @BF
// CHECK-MS: load i32, i32* getelementptr {{.*}} @BF
// CHECK: store i32 {{.*}}, i32* [[I]]
i=vBF.x;
// CHECK-IT: load volatile i8, i8* getelementptr {{.*}} @vBF
// CHECK-MS: load volatile i32, i32* getelementptr {{.*}} @vBF
// CHECK: store i32 {{.*}}, i32* [[I]]
i=V[3];
// CHECK: load <4 x i32>, <4 x i32>* @V
// CHECK: store i32 {{.*}}, i32* [[I]]
i=vV[3];
// CHECK: load volatile <4 x i32>, <4 x i32>* @vV
// CHECK: store i32 {{.*}}, i32* [[I]]
i=VE.yx[1];
// CHECK: load <4 x i32>, <4 x i32>* @VE
// CHECK: store i32 {{.*}}, i32* [[I]]
i=vVE.zy[1];
// CHECK: load volatile <4 x i32>, <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, i32* @vtS
// CHECK: store i32 {{.*}}, i32* [[I]]
// store
S=i;
// CHECK: load i32, i32* [[I]]
// CHECK: store i32 {{.*}}, i32* @S
vS=i;
// CHECK: load i32, i32* [[I]]
// CHECK: store volatile i32 {{.*}}, i32* @vS
*pS=i;
// CHECK: load i32, i32* [[I]]
// CHECK: [[PS_VAL:%[a-zA-Z0-9_.]+]] = load i32*, i32** @pS
// CHECK: store i32 {{.*}}, i32* [[PS_VAL]]
*pvS=i;
// CHECK: load i32, i32* [[I]]
// CHECK: [[PVS_VAL:%[a-zA-Z0-9_.]+]] = load i32*, i32** @pvS
// CHECK: store volatile i32 {{.*}}, i32* [[PVS_VAL]]
A[2]=i;
// CHECK: load i32, i32* [[I]]
// CHECK: store i32 {{.*}}, i32* getelementptr {{.*}} @A
vA[2]=i;
// CHECK: load i32, i32* [[I]]
// CHECK: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vA
F.x=i;
// CHECK: load i32, i32* [[I]]
// CHECK: store i32 {{.*}}, i32* getelementptr {{.*}} @F
vF.x=i;
// CHECK: load i32, i32* [[I]]
// CHECK: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vF
F2.x=i;
// CHECK: load i32, i32* [[I]]
// CHECK: store i32 {{.*}}, i32* getelementptr {{.*}} @F2
vF2.x=i;
// CHECK: load i32, i32* [[I]]
// CHECK: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vF2
vpF2->x=i;
// CHECK: load i32, i32* [[I]]
// CHECK: [[VPF2_VAL:%[a-zA-Z0-9_.]+]] = load {{%[a-zA-Z0-9._]+}}*, {{%[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, i32* [[I]]
// CHECK: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vF3
BF.x=i;
// CHECK: load i32, i32* [[I]]
// CHECK-IT: load i8, i8* getelementptr {{.*}} @BF
// CHECK-MS: load i32, i32* getelementptr {{.*}} @BF
// CHECK-IT: store i8 {{.*}}, i8* getelementptr {{.*}} @BF
// CHECK-MS: store i32 {{.*}}, i32* getelementptr {{.*}} @BF
vBF.x=i;
// CHECK: load i32, i32* [[I]]
// CHECK-IT: load volatile i8, i8* getelementptr {{.*}} @vBF
// CHECK-MS: load volatile i32, i32* getelementptr {{.*}} @vBF
// CHECK-IT: store volatile i8 {{.*}}, i8* getelementptr {{.*}} @vBF
// CHECK-MS: store volatile i32 {{.*}}, i32* getelementptr {{.*}} @vBF
V[3]=i;
// CHECK: load i32, i32* [[I]]
// CHECK: load <4 x i32>, <4 x i32>* @V
// CHECK: store <4 x i32> {{.*}}, <4 x i32>* @V
vV[3]=i;
// CHECK: load i32, i32* [[I]]
// CHECK: load volatile <4 x i32>, <4 x i32>* @vV
// CHECK: store volatile <4 x i32> {{.*}}, <4 x i32>* @vV
vtS=i;
// CHECK: load i32, i32* [[I]]
// CHECK: store volatile i32 {{.*}}, i32* @vtS
// other ops:
++S;
// CHECK: load i32, i32* @S
// CHECK: store i32 {{.*}}, i32* @S
++vS;
// CHECK: load volatile i32, i32* @vS
// CHECK: store volatile i32 {{.*}}, i32* @vS
i+=S;
// CHECK: load i32, i32* @S
// CHECK: load i32, i32* [[I]]
// CHECK: store i32 {{.*}}, i32* [[I]]
i+=vS;
// CHECK: load volatile i32, i32* @vS
// CHECK: load i32, i32* [[I]]
// CHECK: store i32 {{.*}}, i32* [[I]]
++vtS;
// CHECK: load volatile i32, i32* @vtS
// CHECK: store volatile i32 {{.*}}, i32* @vtS
(void)vF2;
// From vF2 to a temporary
// CHECK: call void @llvm.memcpy.{{.*}}(i8* align {{[0-9]+}} %{{.*}}, 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* align {{[0-9]+}} %{{.*}}, i8* {{.*@vF2.*}}, i1 true)
// CHECK: call void @llvm.memcpy.{{.*}}(i8* {{.*@vF2.*}}, i8* {{.*@vF2.*}}, i1 true)
}
Reference in New Issue View Git Blame Copy Permalink