head	1.1;
branch	1.1.1;
access;
symbols
	netbsd-11-0-RC4:1.1.1.7
	netbsd-11-0-RC3:1.1.1.7
	netbsd-11-0-RC2:1.1.1.7
	netbsd-11-0-RC1:1.1.1.7
	perseant-exfatfs-base-20250801:1.1.1.7
	netbsd-11:1.1.1.7.0.10
	netbsd-11-base:1.1.1.7
	netbsd-10-1-RELEASE:1.1.1.7
	perseant-exfatfs-base-20240630:1.1.1.7
	perseant-exfatfs:1.1.1.7.0.8
	perseant-exfatfs-base:1.1.1.7
	netbsd-8-3-RELEASE:1.1.1.5
	netbsd-9-4-RELEASE:1.1.1.6
	netbsd-10-0-RELEASE:1.1.1.7
	netbsd-10-0-RC6:1.1.1.7
	netbsd-10-0-RC5:1.1.1.7
	netbsd-10-0-RC4:1.1.1.7
	netbsd-10-0-RC3:1.1.1.7
	netbsd-10-0-RC2:1.1.1.7
	netbsd-10-0-RC1:1.1.1.7
	netbsd-10:1.1.1.7.0.6
	netbsd-10-base:1.1.1.7
	netbsd-9-3-RELEASE:1.1.1.6
	cjep_sun2x:1.1.1.7.0.4
	cjep_sun2x-base:1.1.1.7
	cjep_staticlib_x-base1:1.1.1.7
	netbsd-9-2-RELEASE:1.1.1.6
	cjep_staticlib_x:1.1.1.7.0.2
	cjep_staticlib_x-base:1.1.1.7
	netbsd-9-1-RELEASE:1.1.1.6
	phil-wifi-20200421:1.1.1.7
	phil-wifi-20200411:1.1.1.7
	phil-wifi-20200406:1.1.1.7
	netbsd-8-2-RELEASE:1.1.1.5
	netbsd-9-0-RELEASE:1.1.1.6
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	netbsd-9-0-RC1:1.1.1.6
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	netbsd-9-base:1.1.1.6
	phil-wifi-20190609:1.1.1.6
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	netbsd-8-1-RC1:1.1.1.5
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	pgoyette-compat-0625:1.1.1.5
	netbsd-8-0-RC2:1.1.1.5
	pgoyette-compat-0521:1.1.1.5
	pgoyette-compat-0502:1.1.1.5
	pgoyette-compat-0422:1.1.1.5
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	pgoyette-compat-0322:1.1.1.5
	pgoyette-compat-0315:1.1.1.5
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	pgoyette-compat-base:1.1.1.5
	netbsd-7-1-1-RELEASE:1.1.1.2.6.1
	clang-319952:1.1.1.5
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	netbsd-8:1.1.1.5.0.6
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	netbsd-7-1-RC2:1.1.1.2.6.1
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	bouyer-socketcan:1.1.1.5.0.2
	bouyer-socketcan-base:1.1.1.5
	clang-291444:1.1.1.5
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	localcount-20160914:1.1.1.4
	netbsd-7-nhusb:1.1.1.2.6.1.0.4
	netbsd-7-nhusb-base:1.1.1.2.6.1
	clang-280599:1.1.1.4
	pgoyette-localcount-20160806:1.1.1.4
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	pgoyette-localcount-base:1.1.1.4
	netbsd-7-0-1-RELEASE:1.1.1.2.6.1
	clang-261930:1.1.1.4
	netbsd-7-0:1.1.1.2.6.1.0.2
	netbsd-7-0-RELEASE:1.1.1.2.6.1
	netbsd-7-0-RC3:1.1.1.2.6.1
	netbsd-7-0-RC2:1.1.1.2.6.1
	netbsd-7-0-RC1:1.1.1.2.6.1
	clang-237755:1.1.1.3
	clang-232565:1.1.1.3
	clang-227398:1.1.1.3
	tls-maxphys-base:1.1.1.2
	tls-maxphys:1.1.1.2.0.8
	netbsd-7:1.1.1.2.0.6
	netbsd-7-base:1.1.1.2
	clang-215315:1.1.1.2
	clang-209886:1.1.1.2
	yamt-pagecache:1.1.1.2.0.4
	yamt-pagecache-base9:1.1.1.2
	tls-earlyentropy:1.1.1.2.0.2
	tls-earlyentropy-base:1.1.1.2
	riastradh-xf86-video-intel-2-7-1-pre-2-21-15:1.1.1.2
	riastradh-drm2-base3:1.1.1.2
	clang-202566:1.1.1.2
	clang-201163:1.1.1.2
	clang-199312:1.1.1.2
	clang-198450:1.1.1.1
	clang-196603:1.1.1.1
	clang-195771:1.1.1.1
	LLVM:1.1.1;
locks; strict;
comment	@// @;


1.1
date	2013.11.28.14.14.58;	author joerg;	state Exp;
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1.1.1.2
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1.1.1.3
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1.1.1.4
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1.1.1.5
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	1.1.1.5.12.1
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1.1.1.2.4.1
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1.1.1.5.14.2
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desc
@@


1.1
log
@Initial revision
@
text
@// RUN: %clang_cc1 -emit-llvm %s -o - -triple i686-pc-linux-gnu | FileCheck %s
// RUN: %clang_cc1 -cxx-abi microsoft -emit-llvm %s -o - -triple i686-pc-win32 | FileCheck -check-prefix MSVC %s

struct A { int a; virtual int aa(); };
struct B { int b; virtual int bb(); };
struct C : virtual A, virtual B { int c; virtual int aa(); virtual int bb(); };
struct AA { int a; virtual int aa(); };
struct BB { int b; virtual int bb(); };
struct CC : AA, BB { virtual int aa(); virtual int bb(); virtual int cc(); };
struct D : virtual C, virtual CC { int e; };

D* x;

A* a() { return x; }
// CHECK: @@_Z1av() [[NUW:#[0-9]+]]
// CHECK: [[VBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = getelementptr i8* {{.*}}, i64 -16
// CHECK: [[CASTVBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = bitcast i8* [[VBASEOFFSETPTRA]] to i32*
// CHECK: load i32* [[CASTVBASEOFFSETPTRA]]
// CHECK: }

// MSVC: @@"\01?a@@@@YAPAUA@@@@XZ"() [[NUW:#[0-9]+]] {
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8* {{.*}}, i32 0
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i8**
// MSVC:   %[[vbtable:.*]] = load i8** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i8* {{.*}}, i32 4
// MSVC:   %[[entry_i32:.*]] = bitcast i8* %[[entry]] to i32*
// MSVC:   %[[offset:.*]] = load i32* %[[entry_i32]]
// MSVC:   add nsw i32 0, %[[offset]]
// MSVC: }

B* b() { return x; }
// CHECK: @@_Z1bv() [[NUW]]
// CHECK: [[VBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = getelementptr i8* {{.*}}, i64 -20
// CHECK: [[CASTVBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = bitcast i8* [[VBASEOFFSETPTRA]] to i32*
// CHECK: load i32* [[CASTVBASEOFFSETPTRA]]
// CHECK: }

// Same as 'a' except we use a different vbtable offset.
// MSVC: @@"\01?b@@@@YAPAUB@@@@XZ"() [[NUW:#[0-9]+]] {
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8* {{.*}}, i32 0
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i8**
// MSVC:   %[[vbtable:.*]] = load i8** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i8* {{.*}}, i32 8
// MSVC:   %[[entry_i32:.*]] = bitcast i8* %[[entry]] to i32*
// MSVC:   %[[offset:.*]] = load i32* %[[entry_i32]]
// MSVC:   add nsw i32 0, %[[offset]]
// MSVC: }


BB* c() { return x; }
// CHECK: @@_Z1cv() [[NUW]]
// CHECK: [[VBASEOFFSETPTRC:%[a-zA-Z0-9\.]+]] = getelementptr i8* {{.*}}, i64 -24
// CHECK: [[CASTVBASEOFFSETPTRC:%[a-zA-Z0-9\.]+]] = bitcast i8* [[VBASEOFFSETPTRC]] to i32*
// CHECK: [[VBASEOFFSETC:%[a-zA-Z0-9\.]+]] = load i32* [[CASTVBASEOFFSETPTRC]]
// CHECK: add i32 [[VBASEOFFSETC]], 8
// CHECK: }

// Same as 'a' except we use a different vbtable offset.
// MSVC: @@"\01?c@@@@YAPAUBB@@@@XZ"() [[NUW:#[0-9]+]] {
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8* {{.*}}, i32 0
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i8**
// MSVC:   %[[vbtable:.*]] = load i8** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i8* {{.*}}, i32 16
// MSVC:   %[[entry_i32:.*]] = bitcast i8* %[[entry]] to i32*
// MSVC:   %[[offset:.*]] = load i32* %[[entry_i32]]
// MSVC:   add nsw i32 0, %[[offset]]
// MSVC: }

// Put the vbptr at a non-zero offset inside a non-virtual base.
struct E { int e; };
struct F : E, D { int f; };

F* y;

BB* d() { return y; }

// Same as 'c' except the vbptr offset is 4, changing the initial GEP and the
// final add.
// MSVC: @@"\01?d@@@@YAPAUBB@@@@XZ"() [[NUW:#[0-9]+]] {
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8* {{.*}}, i32 4
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i8**
// MSVC:   %[[vbtable:.*]] = load i8** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i8* {{.*}}, i32 16
// MSVC:   %[[entry_i32:.*]] = bitcast i8* %[[entry]] to i32*
// MSVC:   %[[offset:.*]] = load i32* %[[entry_i32]]
// MSVC:   add nsw i32 4, %[[offset]]
// MSVC: }

// CHECK: attributes [[NUW]] = { nounwind{{.*}} }
@


1.1.1.1
log
@Import Clang 3.4rc1 r195771.
@
text
@@


1.1.1.2
log
@Import Clang 3.5svn r199312
@
text
@d2 1
a2 1
// RUN: %clang_cc1 -emit-llvm %s -o - -triple i686-pc-win32 | FileCheck -check-prefix MSVC %s
@


1.1.1.2.6.1
log
@Update LLVM to 3.6.1, requested by joerg in ticket 824.
@
text
@d23 5
a27 4
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
// MSVC:   %[[vbtable:.*]] = load i32** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i32* {{.*}}, i32 1
// MSVC:   %[[offset:.*]] = load i32* %[[entry]]
d41 5
a45 4
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
// MSVC:   %[[vbtable:.*]] = load i32** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i32* {{.*}}, i32 2
// MSVC:   %[[offset:.*]] = load i32* %[[entry]]
d61 5
a65 4
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
// MSVC:   %[[vbtable:.*]] = load i32** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i32* {{.*}}, i32 4
// MSVC:   %[[offset:.*]] = load i32* %[[entry]]
d81 5
a85 4
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
// MSVC:   %[[vbtable:.*]] = load i32** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i32* {{.*}}, i32 4
// MSVC:   %[[offset:.*]] = load i32* %[[entry]]
@


1.1.1.3
log
@Import Clang 3.6RC1 r227398.
@
text
@d23 5
a27 4
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
// MSVC:   %[[vbtable:.*]] = load i32** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i32* {{.*}}, i32 1
// MSVC:   %[[offset:.*]] = load i32* %[[entry]]
d41 5
a45 4
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
// MSVC:   %[[vbtable:.*]] = load i32** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i32* {{.*}}, i32 2
// MSVC:   %[[offset:.*]] = load i32* %[[entry]]
d61 5
a65 4
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
// MSVC:   %[[vbtable:.*]] = load i32** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i32* {{.*}}, i32 4
// MSVC:   %[[offset:.*]] = load i32* %[[entry]]
d81 5
a85 4
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i32**
// MSVC:   %[[vbtable:.*]] = load i32** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i32* {{.*}}, i32 4
// MSVC:   %[[offset:.*]] = load i32* %[[entry]]
@


1.1.1.4
log
@Import Clang 3.8.0rc3 r261930.
@
text
@d16 1
a16 1
// CHECK: [[VBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = getelementptr i8, i8* {{.*}}, i64 -16
d18 1
a18 1
// CHECK: load i32, i32* [[CASTVBASEOFFSETPTRA]]
d22 1
a22 1
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8, i8* {{.*}}, i32 0
d24 3
a26 3
// MSVC:   %[[vbtable:.*]] = load i32*, i32** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i32, i32* {{.*}}, i32 1
// MSVC:   %[[offset:.*]] = load i32, i32* %[[entry]]
d32 1
a32 1
// CHECK: [[VBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = getelementptr i8, i8* {{.*}}, i64 -20
d34 1
a34 1
// CHECK: load i32, i32* [[CASTVBASEOFFSETPTRA]]
d39 1
a39 1
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8, i8* {{.*}}, i32 0
d41 3
a43 3
// MSVC:   %[[vbtable:.*]] = load i32*, i32** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i32, i32* {{.*}}, i32 2
// MSVC:   %[[offset:.*]] = load i32, i32* %[[entry]]
d50 1
a50 1
// CHECK: [[VBASEOFFSETPTRC:%[a-zA-Z0-9\.]+]] = getelementptr i8, i8* {{.*}}, i64 -24
d52 1
a52 1
// CHECK: [[VBASEOFFSETC:%[a-zA-Z0-9\.]+]] = load i32, i32* [[CASTVBASEOFFSETPTRC]]
d58 1
a58 1
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8, i8* {{.*}}, i32 0
d60 3
a62 3
// MSVC:   %[[vbtable:.*]] = load i32*, i32** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i32, i32* {{.*}}, i32 4
// MSVC:   %[[offset:.*]] = load i32, i32* %[[entry]]
d77 1
a77 1
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8, i8* {{.*}}, i32 4
d79 3
a81 3
// MSVC:   %[[vbtable:.*]] = load i32*, i32** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i32, i32* {{.*}}, i32 4
// MSVC:   %[[offset:.*]] = load i32, i32* %[[entry]]
@


1.1.1.4.2.1
log
@Sync with HEAD
@
text
@d85 1
a85 1
// CHECK: attributes [[NUW]] = { noinline nounwind{{.*}} }
@


1.1.1.5
log
@Import Clang pre-4.0.0 r291444.
@
text
@d85 1
a85 1
// CHECK: attributes [[NUW]] = { noinline nounwind{{.*}} }
@


1.1.1.5.14.1
log
@Sync with HEAD
@
text
@d21 1
a21 1
// MSVC: @@"?a@@@@YAPAUA@@@@XZ"() [[NUW:#[0-9]+]] {
d38 1
a38 1
// MSVC: @@"?b@@@@YAPAUB@@@@XZ"() [[NUW:#[0-9]+]] {
d57 1
a57 1
// MSVC: @@"?c@@@@YAPAUBB@@@@XZ"() [[NUW:#[0-9]+]] {
d76 1
a76 1
// MSVC: @@"?d@@@@YAPAUBB@@@@XZ"() [[NUW:#[0-9]+]] {
@


1.1.1.5.14.2
log
@Mostly merge changes from HEAD upto 20200411
@
text
@@


1.1.1.5.12.1
log
@Sync with HEAD
@
text
@d21 1
a21 1
// MSVC: @@"?a@@@@YAPAUA@@@@XZ"() [[NUW:#[0-9]+]] {
d38 1
a38 1
// MSVC: @@"?b@@@@YAPAUB@@@@XZ"() [[NUW:#[0-9]+]] {
d57 1
a57 1
// MSVC: @@"?c@@@@YAPAUBB@@@@XZ"() [[NUW:#[0-9]+]] {
d76 1
a76 1
// MSVC: @@"?d@@@@YAPAUBB@@@@XZ"() [[NUW:#[0-9]+]] {
@


1.1.1.6
log
@Import clang r337282 from trunk
@
text
@d21 1
a21 1
// MSVC: @@"?a@@@@YAPAUA@@@@XZ"() [[NUW:#[0-9]+]] {
d38 1
a38 1
// MSVC: @@"?b@@@@YAPAUB@@@@XZ"() [[NUW:#[0-9]+]] {
d57 1
a57 1
// MSVC: @@"?c@@@@YAPAUBB@@@@XZ"() [[NUW:#[0-9]+]] {
d76 1
a76 1
// MSVC: @@"?d@@@@YAPAUBB@@@@XZ"() [[NUW:#[0-9]+]] {
@


1.1.1.7
log
@Mark old LLVM instance as dead.
@
text
@@


1.1.1.2.8.1
log
@file virtual-base-cast.cpp was added on branch tls-maxphys on 2014-08-19 23:47:59 +0000
@
text
@d1 89
@


1.1.1.2.8.2
log
@Rebase to HEAD as of a few days ago.
@
text
@a0 89
// RUN: %clang_cc1 -emit-llvm %s -o - -triple i686-pc-linux-gnu | FileCheck %s
// RUN: %clang_cc1 -emit-llvm %s -o - -triple i686-pc-win32 | FileCheck -check-prefix MSVC %s

struct A { int a; virtual int aa(); };
struct B { int b; virtual int bb(); };
struct C : virtual A, virtual B { int c; virtual int aa(); virtual int bb(); };
struct AA { int a; virtual int aa(); };
struct BB { int b; virtual int bb(); };
struct CC : AA, BB { virtual int aa(); virtual int bb(); virtual int cc(); };
struct D : virtual C, virtual CC { int e; };

D* x;

A* a() { return x; }
// CHECK: @@_Z1av() [[NUW:#[0-9]+]]
// CHECK: [[VBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = getelementptr i8* {{.*}}, i64 -16
// CHECK: [[CASTVBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = bitcast i8* [[VBASEOFFSETPTRA]] to i32*
// CHECK: load i32* [[CASTVBASEOFFSETPTRA]]
// CHECK: }

// MSVC: @@"\01?a@@@@YAPAUA@@@@XZ"() [[NUW:#[0-9]+]] {
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8* {{.*}}, i32 0
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i8**
// MSVC:   %[[vbtable:.*]] = load i8** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i8* {{.*}}, i32 4
// MSVC:   %[[entry_i32:.*]] = bitcast i8* %[[entry]] to i32*
// MSVC:   %[[offset:.*]] = load i32* %[[entry_i32]]
// MSVC:   add nsw i32 0, %[[offset]]
// MSVC: }

B* b() { return x; }
// CHECK: @@_Z1bv() [[NUW]]
// CHECK: [[VBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = getelementptr i8* {{.*}}, i64 -20
// CHECK: [[CASTVBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = bitcast i8* [[VBASEOFFSETPTRA]] to i32*
// CHECK: load i32* [[CASTVBASEOFFSETPTRA]]
// CHECK: }

// Same as 'a' except we use a different vbtable offset.
// MSVC: @@"\01?b@@@@YAPAUB@@@@XZ"() [[NUW:#[0-9]+]] {
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8* {{.*}}, i32 0
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i8**
// MSVC:   %[[vbtable:.*]] = load i8** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i8* {{.*}}, i32 8
// MSVC:   %[[entry_i32:.*]] = bitcast i8* %[[entry]] to i32*
// MSVC:   %[[offset:.*]] = load i32* %[[entry_i32]]
// MSVC:   add nsw i32 0, %[[offset]]
// MSVC: }


BB* c() { return x; }
// CHECK: @@_Z1cv() [[NUW]]
// CHECK: [[VBASEOFFSETPTRC:%[a-zA-Z0-9\.]+]] = getelementptr i8* {{.*}}, i64 -24
// CHECK: [[CASTVBASEOFFSETPTRC:%[a-zA-Z0-9\.]+]] = bitcast i8* [[VBASEOFFSETPTRC]] to i32*
// CHECK: [[VBASEOFFSETC:%[a-zA-Z0-9\.]+]] = load i32* [[CASTVBASEOFFSETPTRC]]
// CHECK: add i32 [[VBASEOFFSETC]], 8
// CHECK: }

// Same as 'a' except we use a different vbtable offset.
// MSVC: @@"\01?c@@@@YAPAUBB@@@@XZ"() [[NUW:#[0-9]+]] {
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8* {{.*}}, i32 0
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i8**
// MSVC:   %[[vbtable:.*]] = load i8** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i8* {{.*}}, i32 16
// MSVC:   %[[entry_i32:.*]] = bitcast i8* %[[entry]] to i32*
// MSVC:   %[[offset:.*]] = load i32* %[[entry_i32]]
// MSVC:   add nsw i32 0, %[[offset]]
// MSVC: }

// Put the vbptr at a non-zero offset inside a non-virtual base.
struct E { int e; };
struct F : E, D { int f; };

F* y;

BB* d() { return y; }

// Same as 'c' except the vbptr offset is 4, changing the initial GEP and the
// final add.
// MSVC: @@"\01?d@@@@YAPAUBB@@@@XZ"() [[NUW:#[0-9]+]] {
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8* {{.*}}, i32 4
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i8**
// MSVC:   %[[vbtable:.*]] = load i8** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i8* {{.*}}, i32 16
// MSVC:   %[[entry_i32:.*]] = bitcast i8* %[[entry]] to i32*
// MSVC:   %[[offset:.*]] = load i32* %[[entry_i32]]
// MSVC:   add nsw i32 4, %[[offset]]
// MSVC: }

// CHECK: attributes [[NUW]] = { nounwind{{.*}} }
@


1.1.1.2.4.1
log
@file virtual-base-cast.cpp was added on branch yamt-pagecache on 2014-05-22 16:18:57 +0000
@
text
@d1 89
@


1.1.1.2.4.2
log
@sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")
@
text
@a0 89
// RUN: %clang_cc1 -emit-llvm %s -o - -triple i686-pc-linux-gnu | FileCheck %s
// RUN: %clang_cc1 -emit-llvm %s -o - -triple i686-pc-win32 | FileCheck -check-prefix MSVC %s

struct A { int a; virtual int aa(); };
struct B { int b; virtual int bb(); };
struct C : virtual A, virtual B { int c; virtual int aa(); virtual int bb(); };
struct AA { int a; virtual int aa(); };
struct BB { int b; virtual int bb(); };
struct CC : AA, BB { virtual int aa(); virtual int bb(); virtual int cc(); };
struct D : virtual C, virtual CC { int e; };

D* x;

A* a() { return x; }
// CHECK: @@_Z1av() [[NUW:#[0-9]+]]
// CHECK: [[VBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = getelementptr i8* {{.*}}, i64 -16
// CHECK: [[CASTVBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = bitcast i8* [[VBASEOFFSETPTRA]] to i32*
// CHECK: load i32* [[CASTVBASEOFFSETPTRA]]
// CHECK: }

// MSVC: @@"\01?a@@@@YAPAUA@@@@XZ"() [[NUW:#[0-9]+]] {
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8* {{.*}}, i32 0
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i8**
// MSVC:   %[[vbtable:.*]] = load i8** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i8* {{.*}}, i32 4
// MSVC:   %[[entry_i32:.*]] = bitcast i8* %[[entry]] to i32*
// MSVC:   %[[offset:.*]] = load i32* %[[entry_i32]]
// MSVC:   add nsw i32 0, %[[offset]]
// MSVC: }

B* b() { return x; }
// CHECK: @@_Z1bv() [[NUW]]
// CHECK: [[VBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = getelementptr i8* {{.*}}, i64 -20
// CHECK: [[CASTVBASEOFFSETPTRA:%[a-zA-Z0-9\.]+]] = bitcast i8* [[VBASEOFFSETPTRA]] to i32*
// CHECK: load i32* [[CASTVBASEOFFSETPTRA]]
// CHECK: }

// Same as 'a' except we use a different vbtable offset.
// MSVC: @@"\01?b@@@@YAPAUB@@@@XZ"() [[NUW:#[0-9]+]] {
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8* {{.*}}, i32 0
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i8**
// MSVC:   %[[vbtable:.*]] = load i8** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i8* {{.*}}, i32 8
// MSVC:   %[[entry_i32:.*]] = bitcast i8* %[[entry]] to i32*
// MSVC:   %[[offset:.*]] = load i32* %[[entry_i32]]
// MSVC:   add nsw i32 0, %[[offset]]
// MSVC: }


BB* c() { return x; }
// CHECK: @@_Z1cv() [[NUW]]
// CHECK: [[VBASEOFFSETPTRC:%[a-zA-Z0-9\.]+]] = getelementptr i8* {{.*}}, i64 -24
// CHECK: [[CASTVBASEOFFSETPTRC:%[a-zA-Z0-9\.]+]] = bitcast i8* [[VBASEOFFSETPTRC]] to i32*
// CHECK: [[VBASEOFFSETC:%[a-zA-Z0-9\.]+]] = load i32* [[CASTVBASEOFFSETPTRC]]
// CHECK: add i32 [[VBASEOFFSETC]], 8
// CHECK: }

// Same as 'a' except we use a different vbtable offset.
// MSVC: @@"\01?c@@@@YAPAUBB@@@@XZ"() [[NUW:#[0-9]+]] {
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8* {{.*}}, i32 0
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i8**
// MSVC:   %[[vbtable:.*]] = load i8** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i8* {{.*}}, i32 16
// MSVC:   %[[entry_i32:.*]] = bitcast i8* %[[entry]] to i32*
// MSVC:   %[[offset:.*]] = load i32* %[[entry_i32]]
// MSVC:   add nsw i32 0, %[[offset]]
// MSVC: }

// Put the vbptr at a non-zero offset inside a non-virtual base.
struct E { int e; };
struct F : E, D { int f; };

F* y;

BB* d() { return y; }

// Same as 'c' except the vbptr offset is 4, changing the initial GEP and the
// final add.
// MSVC: @@"\01?d@@@@YAPAUBB@@@@XZ"() [[NUW:#[0-9]+]] {
// MSVC:   %[[vbptr_off:.*]] = getelementptr inbounds i8* {{.*}}, i32 4
// MSVC:   %[[vbptr:.*]] = bitcast i8* %[[vbptr_off]] to i8**
// MSVC:   %[[vbtable:.*]] = load i8** %[[vbptr]]
// MSVC:   %[[entry:.*]] = getelementptr inbounds i8* {{.*}}, i32 16
// MSVC:   %[[entry_i32:.*]] = bitcast i8* %[[entry]] to i32*
// MSVC:   %[[offset:.*]] = load i32* %[[entry_i32]]
// MSVC:   add nsw i32 4, %[[offset]]
// MSVC: }

// CHECK: attributes [[NUW]] = { nounwind{{.*}} }
@