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71 lines
3.2 KiB
D
71 lines
3.2 KiB
D
// RUN: %ldc -c -output-ll -of=%t.ll %s && FileCheck %s < %t.ll
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// Fails on Windows_x86, see https://github.com/ldc-developers/ldc/issues/1356
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// XFAIL: Windows_x86
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align(32) struct Outer { int a = 1; }
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// CHECK-DAG: _D5align5Outer6__initZ = constant %align.Outer {{.*}}, align 32
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struct Inner { align(32) int a = 1; }
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// CHECK-DAG: _D5align5Inner6__initZ = constant %align.Inner {{.*}}, align 32
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align(1) ubyte globalByte1;
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// CHECK-DAG: _D5align11globalByte1h = {{.*}} align 1
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static Outer globalOuter;
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// CHECK-DAG: _D5align11globalOuterSQu5Outer = {{.*}} align 32
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static Inner globalInner;
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// CHECK-DAG: _D5align11globalInnerSQu5Inner = {{.*}} align 32
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Outer passAndReturnOuterByVal(Outer arg) { return arg; }
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// CHECK: define{{.*}} void @{{.*}}_D5align23passAndReturnOuterByValFSQBh5OuterZQl
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/* the 32-bit x86 ABI substitutes the sret attribute by inreg */
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// CHECK-SAME: %align.Outer* {{noalias sret|inreg noalias}} align 32 %.sret_arg
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/* How the arg is passed by value is ABI-specific, but the pointer must be aligned.
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* When the argument is passed as a byte array and copied into a stack alloc, that stack alloca must be aligned. */
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// CHECK: {{(align 32 %arg|%arg = alloca %align.Outer, align 32)}}
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Inner passAndReturnInnerByVal(Inner arg) { return arg; }
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// CHECK: define{{.*}} void @{{.*}}_D5align23passAndReturnInnerByValFSQBh5InnerZQl
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// CHECK-SAME: %align.Inner* {{noalias sret|inreg noalias}} align 32 %.sret_arg
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// CHECK: {{(align 32 %arg|%arg = alloca %align.Inner, align 32)}}
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void main() {
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Outer outer;
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// CHECK: %outer = alloca %align.Outer, align 32
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Inner inner;
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// CHECK: %inner = alloca %align.Inner, align 32
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align(1) byte byte1;
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// CHECK: %byte1 = alloca i8, align 1
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align(16) byte byte16;
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// CHECK: %byte16 = alloca i8, align 16
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align(64) Outer outer64;
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// CHECK: %outer64 = alloca %align.Outer, align 64
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align(128) Inner inner128;
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// CHECK: %inner128 = alloca %align.Inner, align 128
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alias Byte8 = align(8) byte;
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Byte8 byte8;
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// Can aliases contain align(x) ?
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// C HECK: %byte8 = alloca i8, align 8
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// C HECK: %byte8 = alloca i8, align 1
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align(16) Outer outeroverride;
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// Yet undecided if align() should override type alignment:
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// C HECK: %outeroverride = alloca %align.Outer, align 16
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// C HECK: %outeroverride = alloca %align.Outer, align 32
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// CHECK: %.sret_tmp{{.*}} = alloca %align.Outer, align 32
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// CHECK: %.sret_tmp{{.*}} = alloca %align.Inner, align 32
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outer = passAndReturnOuterByVal(outer);
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// CHECK: call{{.*}} void @{{.*}}_D5align23passAndReturnOuterByValFSQBh5OuterZQl
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// CHECK-SAME: %align.Outer* {{noalias sret|inreg noalias}} align 32 %.sret_tmp
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// The argument is either passed by aligned (optimizer hint) pointer or as an array of i32/64 and copied into an aligned stack slot inside the callee.
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// CHECK-SAME: {{(align 32 %|\[[0-9]+ x i..\])}}
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inner = passAndReturnInnerByVal(inner);
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// CHECK: call{{.*}} void @{{.*}}_D5align23passAndReturnInnerByValFSQBh5InnerZQl
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// CHECK-SAME: %align.Inner* {{noalias sret|inreg noalias}} align 32 %.sret_tmp
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// The argument is either passed by aligned (optimizer hint) pointer or as an array of i32/64 and copied into an aligned stack slot inside the callee.
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// CHECK-SAME: {{(align 32 %|\[[0-9]+ x i..\])}}
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}
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