e0ac46e69d
This reverts commit d618f1c3b12effd0c2bdb7d02108d3551f389d3d. This commit wasn't reviewed ahead of time and significant concerns were raised immediately after it landed. According to our developer policy this warrants immediate revert of the commit. https://llvm.org/docs/DeveloperPolicy.html#patch-reversion-policy Differential Revision: https://reviews.llvm.org/D155509
118 lines
4.4 KiB
C
118 lines
4.4 KiB
C
// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -Wno-strict-prototypes -o - -fblocks | FileCheck %s
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// CHECK: @{{.*}} = internal constant { i32, i32, ptr, ptr, ptr, ptr } { i32 0, i32 24, ptr @__copy_helper_block_4_20r, ptr @__destroy_helper_block_4_20r, ptr @{{.*}}, ptr null }, align 4
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// CHECK: @[[BLOCK_DESCRIPTOR_TMP21:.*]] = internal constant { i32, i32, ptr, ptr, ptr, ptr } { i32 0, i32 24, ptr @__copy_helper_block_4_20r, ptr @__destroy_helper_block_4_20r, ptr @{{.*}}, ptr null }, align 4
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void (^f)(void) = ^{};
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// rdar://6768379
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int f0(int (^a0)()) {
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return a0(1, 2, 3);
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}
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// Verify that attributes on blocks are set correctly.
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typedef struct s0 T;
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struct s0 {
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int a[64];
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};
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// CHECK: define internal void @__f2_block_invoke(ptr noalias sret(%struct.s0) align 4 {{%.*}}, ptr noundef {{%.*}}, ptr noundef byval(%struct.s0) align 4 {{.*}})
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struct s0 f2(struct s0 a0) {
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return ^(struct s0 a1){ return a1; }(a0);
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}
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// This should not crash: rdar://6808051
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void *P = ^{
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void *Q = __func__;
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};
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void (^test1)(void) = ^(void) {
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__block int i;
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^ { i = 1; }();
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};
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// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block_4_20r(ptr noundef %0, ptr noundef %1) unnamed_addr
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// CHECK: %[[_ADDR:.*]] = alloca ptr, align 4
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// CHECK-NEXT: %[[_ADDR1:.*]] = alloca ptr, align 4
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// CHECK-NEXT: store ptr %0, ptr %[[_ADDR]], align 4
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// CHECK-NEXT: store ptr %1, ptr %[[_ADDR1]], align 4
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// CHECK-NEXT: %[[V2:.*]] = load ptr, ptr %[[_ADDR1]], align 4
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// CHECK-NEXT: %[[V3:.*]] = load ptr, ptr %[[_ADDR]], align 4
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// CHECK-NEXT: %[[V4:.*]] = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %[[V2]], i32 0, i32 5
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// CHECK-NEXT: %[[V5:.*]] = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %[[V3]], i32 0, i32 5
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// CHECK-NEXT: %[[BLOCKCOPY_SRC:.*]] = load ptr, ptr %[[V4]], align 4
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// CHECK-NEXT: call void @_Block_object_assign(ptr %[[V5]], ptr %[[BLOCKCOPY_SRC]], i32 8)
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// CHECK-NEXT: ret void
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// CHECK-LABEL: define linkonce_odr hidden void @__destroy_helper_block_4_20r(ptr noundef %0) unnamed_addr
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// CHECK: %[[_ADDR:.*]] = alloca ptr, align 4
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// CHECK-NEXT: store ptr %0, ptr %[[_ADDR]], align 4
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// CHECK-NEXT: %[[V1:.*]] = load ptr, ptr %[[_ADDR]], align 4
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// CHECK-NEXT: %[[V2:.*]] = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %[[V1]], i32 0, i32 5
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// CHECK-NEXT: %[[V3:.*]] = load ptr, ptr %[[V2]], align 4
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// CHECK-NEXT: call void @_Block_object_dispose(ptr %[[V3]], i32 8)
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// CHECK-NEXT: ret void
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typedef double ftype(double);
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// It's not clear that we *should* support this syntax, but until that decision
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// is made, we should support it properly and not crash.
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ftype ^test2 = ^ftype {
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return 0;
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};
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// rdar://problem/8605032
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void f3_helper(void (^)(void));
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void f3(void) {
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_Bool b = 0;
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f3_helper(^{ if (b) {} });
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}
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// rdar://problem/11322251
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// The bool can fill in between the header and the long long.
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// Add the appropriate amount of padding between them.
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void f4_helper(long long (^)(void));
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// CHECK-LABEL: define{{.*}} void @f4()
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void f4(void) {
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_Bool b = 0;
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long long ll = 0;
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// CHECK: alloca <{ ptr, i32, i32, ptr, ptr, i8, [3 x i8], i64 }>, align 8
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f4_helper(^{ if (b) return ll; return 0LL; });
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}
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// rdar://problem/11354538
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// The alignment after rounding up to the align of F5 is actually
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// greater than the required alignment. Don't assert.
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struct F5 {
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char buffer[32] __attribute((aligned));
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};
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void f5_helper(void (^)(struct F5 *));
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// CHECK-LABEL: define{{.*}} void @f5()
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void f5(void) {
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struct F5 value;
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// CHECK: alloca <{ ptr, i32, i32, ptr, ptr, [12 x i8], [[F5:%.*]] }>, align 16
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f5_helper(^(struct F5 *slot) { *slot = value; });
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}
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// rdar://14085217
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void (^b)() = ^{};
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int main(void) {
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(b?: ^{})();
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}
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// CHECK: [[ZERO:%.*]] = load ptr, ptr @b
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// CHECK-NEXT: [[TB:%.*]] = icmp ne ptr [[ZERO]], null
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// CHECK-NEXT: br i1 [[TB]], label [[CT:%.*]], label [[CF:%.*]]
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// CHECK: br label [[CE:%.*]]
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// Ensure that we don't emit helper code in copy/dispose routines for variables
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// that are const-captured.
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void testConstCaptureInCopyAndDestroyHelpers(void) {
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const int x = 0;
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__block int i;
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(^ { i = x; })();
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}
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// CHECK-LABEL: define{{.*}} void @testConstCaptureInCopyAndDestroyHelpers(
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// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %{{.*}}, i32 0, i32 4
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// CHECK: store ptr @[[BLOCK_DESCRIPTOR_TMP21]], ptr %[[BLOCK_DESCRIPTOR]], align 4
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// CHECK-LABEL: define internal void @__testConstCaptureInCopyAndDestroyHelpers_block_invoke
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