maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/clang/test/CodeGen/block-byref-aggr.c

67 lines
3.5 KiB
C
Raw Normal View History

block variables on lhs need be ir-gen'ed after the rhs when its 'forwarding' pointer may be modified in rhs evaluation as result of call to Block_copy. // rdar://9309454 llvm-svn: 130545
2011-04-30 05:53:21 +08:00
// RUN: %clang_cc1 %s -emit-llvm -o - -fblocks -triple x86_64-apple-darwin10 | FileCheck %s
Significantly simplify CGExprAgg's logic about ignored results: if we want to ignore a result, the Dest will be null. Otherwise, we must copy into it. This means we need to ensure a slot when loading from a volatile l-value. With all that in place, fix a bug with chained assignments into __block variables of aggregate type where we were losing insight into the actual source of the value during the second assignment. llvm-svn: 159630
2012-07-03 07:58:38 +08:00
// CHECK: [[AGG:%.*]] = type { i32 }
typedef struct { int v; } Agg;
Agg makeAgg(void);
block variables on lhs need be ir-gen'ed after the rhs when its 'forwarding' pointer may be modified in rhs evaluation as result of call to Block_copy. // rdar://9309454 llvm-svn: 130545
2011-04-30 05:53:21 +08:00
Significantly simplify CGExprAgg's logic about ignored results: if we want to ignore a result, the Dest will be null. Otherwise, we must copy into it. This means we need to ensure a slot when loading from a volatile l-value. With all that in place, fix a bug with chained assignments into __block variables of aggregate type where we were losing insight into the actual source of the value during the second assignment. llvm-svn: 159630
2012-07-03 07:58:38 +08:00
// When assigning into a __block variable, ensure that we compute that
// address *after* evaluating the RHS when the RHS has the capacity to
// cause a block copy. rdar://9309454
void test0() {
__block Agg a = {100};
block variables on lhs need be ir-gen'ed after the rhs when its 'forwarding' pointer may be modified in rhs evaluation as result of call to Block_copy. // rdar://9309454 llvm-svn: 130545
2011-04-30 05:53:21 +08:00
Significantly simplify CGExprAgg's logic about ignored results: if we want to ignore a result, the Dest will be null. Otherwise, we must copy into it. This means we need to ensure a slot when loading from a volatile l-value. With all that in place, fix a bug with chained assignments into __block variables of aggregate type where we were losing insight into the actual source of the value during the second assignment. llvm-svn: 159630
2012-07-03 07:58:38 +08:00
a = makeAgg();
}
CHECK-LABEL-ify some code gen tests to improve diagnostic experience when tests fail. llvm-svn: 188447
2013-08-15 14:47:53 +08:00
// CHECK-LABEL: define void @test0()
Significantly simplify CGExprAgg's logic about ignored results: if we want to ignore a result, the Dest will be null. Otherwise, we must copy into it. This means we need to ensure a slot when loading from a volatile l-value. With all that in place, fix a bug with chained assignments into __block variables of aggregate type where we were losing insight into the actual source of the value during the second assignment. llvm-svn: 159630
2012-07-03 07:58:38 +08:00
// CHECK: [[A:%.*]] = alloca [[BYREF:%.*]], align 8
// CHECK-NEXT: [[TEMP:%.*]] = alloca [[AGG]], align 4
// CHECK: [[RESULT:%.*]] = call i32 @makeAgg()
Update Clang tests to handle explicitly typed gep changes in LLVM. llvm-svn: 230783
2015-02-28 03:18:17 +08:00
// CHECK-NEXT: [[T0:%.*]] = getelementptr [[AGG]], [[AGG]]* [[TEMP]], i32 0, i32 0
Significantly simplify CGExprAgg's logic about ignored results: if we want to ignore a result, the Dest will be null. Otherwise, we must copy into it. This means we need to ensure a slot when loading from a volatile l-value. With all that in place, fix a bug with chained assignments into __block variables of aggregate type where we were losing insight into the actual source of the value during the second assignment. llvm-svn: 159630
2012-07-03 07:58:38 +08:00
// CHECK-NEXT: store i32 [[RESULT]], i32* [[T0]]
// Check that we properly assign into the forwarding pointer.
Update Clang tests to handle explicitly typed gep changes in LLVM. llvm-svn: 230783
2015-02-28 03:18:17 +08:00
// CHECK-NEXT: [[A_FORWARDING:%.*]] = getelementptr inbounds [[BYREF]], [[BYREF]]* [[A]], i32 0, i32 1
Update Clang tests to handle explicitly typed load changes in LLVM. llvm-svn: 230795
2015-02-28 05:19:58 +08:00
// CHECK-NEXT: [[T0:%.*]] = load [[BYREF]]*, [[BYREF]]** [[A_FORWARDING]]
Update Clang tests to handle explicitly typed gep changes in LLVM. llvm-svn: 230783
2015-02-28 03:18:17 +08:00
// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[BYREF]], [[BYREF]]* [[T0]], i32 0, i32 4
Significantly simplify CGExprAgg's logic about ignored results: if we want to ignore a result, the Dest will be null. Otherwise, we must copy into it. This means we need to ensure a slot when loading from a volatile l-value. With all that in place, fix a bug with chained assignments into __block variables of aggregate type where we were losing insight into the actual source of the value during the second assignment. llvm-svn: 159630
2012-07-03 07:58:38 +08:00
// CHECK-NEXT: [[T2:%.*]] = bitcast [[AGG]]* [[T1]] to i8*
// CHECK-NEXT: [[T3:%.*]] = bitcast [[AGG]]* [[TEMP]] to i8*
// CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[T2]], i8* [[T3]], i64 4, i32 4, i1 false)
// Verify that there's nothing else significant in the function.
// CHECK-NEXT: [[T0:%.*]] = bitcast [[BYREF]]* [[A]] to i8*
// CHECK-NEXT: call void @_Block_object_dispose(i8* [[T0]], i32 8)
// CHECK-NEXT: ret void
block variables on lhs need be ir-gen'ed after the rhs when its 'forwarding' pointer may be modified in rhs evaluation as result of call to Block_copy. // rdar://9309454 llvm-svn: 130545
2011-04-30 05:53:21 +08:00
Significantly simplify CGExprAgg's logic about ignored results: if we want to ignore a result, the Dest will be null. Otherwise, we must copy into it. This means we need to ensure a slot when loading from a volatile l-value. With all that in place, fix a bug with chained assignments into __block variables of aggregate type where we were losing insight into the actual source of the value during the second assignment. llvm-svn: 159630
2012-07-03 07:58:38 +08:00
// When chaining assignments into __block variables, make sure we
// propagate the actual value into the outer variable.
// rdar://11757470
void test1() {
__block Agg a, b;
a = b = makeAgg();
block variables on lhs need be ir-gen'ed after the rhs when its 'forwarding' pointer may be modified in rhs evaluation as result of call to Block_copy. // rdar://9309454 llvm-svn: 130545
2011-04-30 05:53:21 +08:00
}
CHECK-LABEL-ify some code gen tests to improve diagnostic experience when tests fail. llvm-svn: 188447
2013-08-15 14:47:53 +08:00
// CHECK-LABEL: define void @test1()
Significantly simplify CGExprAgg's logic about ignored results: if we want to ignore a result, the Dest will be null. Otherwise, we must copy into it. This means we need to ensure a slot when loading from a volatile l-value. With all that in place, fix a bug with chained assignments into __block variables of aggregate type where we were losing insight into the actual source of the value during the second assignment. llvm-svn: 159630
2012-07-03 07:58:38 +08:00
// CHECK: [[A:%.*]] = alloca [[A_BYREF:%.*]], align 8
// CHECK-NEXT: [[B:%.*]] = alloca [[B_BYREF:%.*]], align 8
// CHECK-NEXT: [[TEMP:%.*]] = alloca [[AGG]], align 4
// CHECK: [[RESULT:%.*]] = call i32 @makeAgg()
Update Clang tests to handle explicitly typed gep changes in LLVM. llvm-svn: 230783
2015-02-28 03:18:17 +08:00
// CHECK-NEXT: [[T0:%.*]] = getelementptr [[AGG]], [[AGG]]* [[TEMP]], i32 0, i32 0
Significantly simplify CGExprAgg's logic about ignored results: if we want to ignore a result, the Dest will be null. Otherwise, we must copy into it. This means we need to ensure a slot when loading from a volatile l-value. With all that in place, fix a bug with chained assignments into __block variables of aggregate type where we were losing insight into the actual source of the value during the second assignment. llvm-svn: 159630
2012-07-03 07:58:38 +08:00
// CHECK-NEXT: store i32 [[RESULT]], i32* [[T0]]
// Check that we properly assign into the forwarding pointer, first for b:
Update Clang tests to handle explicitly typed gep changes in LLVM. llvm-svn: 230783
2015-02-28 03:18:17 +08:00
// CHECK-NEXT: [[B_FORWARDING:%.*]] = getelementptr inbounds [[B_BYREF]], [[B_BYREF]]* [[B]], i32 0, i32 1
Update Clang tests to handle explicitly typed load changes in LLVM. llvm-svn: 230795
2015-02-28 05:19:58 +08:00
// CHECK-NEXT: [[T0:%.*]] = load [[B_BYREF]]*, [[B_BYREF]]** [[B_FORWARDING]]
Update Clang tests to handle explicitly typed gep changes in LLVM. llvm-svn: 230783
2015-02-28 03:18:17 +08:00
// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[B_BYREF]], [[B_BYREF]]* [[T0]], i32 0, i32 4
Significantly simplify CGExprAgg's logic about ignored results: if we want to ignore a result, the Dest will be null. Otherwise, we must copy into it. This means we need to ensure a slot when loading from a volatile l-value. With all that in place, fix a bug with chained assignments into __block variables of aggregate type where we were losing insight into the actual source of the value during the second assignment. llvm-svn: 159630
2012-07-03 07:58:38 +08:00
// CHECK-NEXT: [[T2:%.*]] = bitcast [[AGG]]* [[T1]] to i8*
// CHECK-NEXT: [[T3:%.*]] = bitcast [[AGG]]* [[TEMP]] to i8*
// CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[T2]], i8* [[T3]], i64 4, i32 4, i1 false)
// Then for 'a':
Update Clang tests to handle explicitly typed gep changes in LLVM. llvm-svn: 230783
2015-02-28 03:18:17 +08:00
// CHECK-NEXT: [[A_FORWARDING:%.*]] = getelementptr inbounds [[A_BYREF]], [[A_BYREF]]* [[A]], i32 0, i32 1
Update Clang tests to handle explicitly typed load changes in LLVM. llvm-svn: 230795
2015-02-28 05:19:58 +08:00
// CHECK-NEXT: [[T0:%.*]] = load [[A_BYREF]]*, [[A_BYREF]]** [[A_FORWARDING]]
Update Clang tests to handle explicitly typed gep changes in LLVM. llvm-svn: 230783
2015-02-28 03:18:17 +08:00
// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[A_BYREF]], [[A_BYREF]]* [[T0]], i32 0, i32 4
Significantly simplify CGExprAgg's logic about ignored results: if we want to ignore a result, the Dest will be null. Otherwise, we must copy into it. This means we need to ensure a slot when loading from a volatile l-value. With all that in place, fix a bug with chained assignments into __block variables of aggregate type where we were losing insight into the actual source of the value during the second assignment. llvm-svn: 159630
2012-07-03 07:58:38 +08:00
// CHECK-NEXT: [[T2:%.*]] = bitcast [[AGG]]* [[T1]] to i8*
// CHECK-NEXT: [[T3:%.*]] = bitcast [[AGG]]* [[TEMP]] to i8*
// CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[T2]], i8* [[T3]], i64 4, i32 4, i1 false)
// Verify that there's nothing else significant in the function.
// CHECK-NEXT: [[T0:%.*]] = bitcast [[B_BYREF]]* [[B]] to i8*
// CHECK-NEXT: call void @_Block_object_dispose(i8* [[T0]], i32 8)
// CHECK-NEXT: [[T0:%.*]] = bitcast [[A_BYREF]]* [[A]] to i8*
// CHECK-NEXT: call void @_Block_object_dispose(i8* [[T0]], i32 8)
// CHECK-NEXT: ret void