[llvm-commits] [llvm] r46565 - in /llvm/trunk: lib/CodeGen/MachineModuleInfo.cpp test/DebugInfo/globalGetElementPtr.ll
Dale Johannesen
dalej at apple.com
Wed Jan 30 11:00:21 PST 2008
Author: johannes
Date: Wed Jan 30 13:00:21 2008
New Revision: 46565
URL: http://llvm.org/viewvc/llvm-project?rev=46565&view=rev
Log:
Accept getelementptr starting at GV with all 0 indices as a
legitimate way of representing global variable GV in debug info.
Added:
llvm/trunk/test/DebugInfo/globalGetElementPtr.ll
Modified:
llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp
Modified: llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp?rev=46565&r1=46564&r2=46565&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp Wed Jan 30 13:00:21 2008
@@ -104,6 +104,13 @@
} else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
if (CE->getOpcode() == Instruction::BitCast) {
return dyn_cast<GlobalVariable>(CE->getOperand(0));
+ } else if (CE->getOpcode() == Instruction::GetElementPtr) {
+ for (unsigned int i=1; i<CE->getNumOperands(); i++) {
+ Constant* CI = cast<Constant>(CE->getOperand(i));
+ if (!CI || !CI->isNullValue())
+ return NULL;
+ }
+ return dyn_cast<GlobalVariable>(CE->getOperand(0));
}
}
return NULL;
@@ -117,6 +124,13 @@
} else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
if (CE->getOpcode() == Instruction::BitCast) {
return isa<GlobalVariable>(CE->getOperand(0));
+ } else if (CE->getOpcode() == Instruction::GetElementPtr) {
+ for (unsigned int i=1; i<CE->getNumOperands(); i++) {
+ Constant* CI = cast<Constant>(CE->getOperand(i));
+ if (!CI || !CI->isNullValue())
+ return false;
+ }
+ return isa<GlobalVariable>(CE->getOperand(0));
}
}
return false;
Added: llvm/trunk/test/DebugInfo/globalGetElementPtr.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/globalGetElementPtr.ll?rev=46565&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/globalGetElementPtr.ll (added)
+++ llvm/trunk/test/DebugInfo/globalGetElementPtr.ll Wed Jan 30 13:00:21 2008
@@ -0,0 +1,264 @@
+; RUN: llvm-as < %s | llc
+; ModuleID = 'foo.c'
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "i686-apple-darwin8"
+ %llvm.dbg.anchor.type = type { i32, i32 }
+ %llvm.dbg.basictype.type = type { i32, %struct.anon*, i8*, %struct.anon*, i32, i64, i64, i64, i32, i32 }
+ %llvm.dbg.compile_unit.type = type { i32, %struct.anon*, i32, i8*, i8*, i8* }
+ %llvm.dbg.compositetype.type = type { i32, %struct.anon*, i8*, %struct.anon*, i32, i64, i64, i64, i32, %struct.anon*, %struct.anon* }
+ %llvm.dbg.derivedtype.type = type { i32, %struct.anon*, i8*, %struct.anon*, i32, i64, i64, i64, i32, %struct.anon* }
+ %llvm.dbg.global_variable.type = type { i32, %struct.anon*, %struct.anon*, i8*, i8*, i8*, %struct.anon*, i32, %struct.anon*, i1, i1, %struct.anon* }
+ %llvm.dbg.subprogram.type = type { i32, %struct.anon*, %struct.anon*, i8*, i8*, i8*, %struct.anon*, i32, %struct.anon*, i1, i1 }
+ %llvm.dbg.subrange.type = type { i32, i64, i64 }
+ %llvm.dbg.variable.type = type { i32, %struct.anon*, i8*, %struct.anon*, i32, %struct.anon* }
+ %struct.S271 = type { [0 x %struct.anon], %struct.anon }
+ %struct.anon = type { }
+ at llvm.dbg.subprogram = internal constant %llvm.dbg.subprogram.type {
+ i32 393262,
+ %struct.anon* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.subprograms to %struct.anon*),
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i8* getelementptr ([4 x i8]* @.str3, i32 0, i32 0),
+ i8* getelementptr ([4 x i8]* @.str3, i32 0, i32 0),
+ i8* null,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i32 2,
+ %struct.anon* bitcast (%llvm.dbg.derivedtype.type* @llvm.dbg.derivedtype to %struct.anon*),
+ i1 false,
+ i1 true }, section "llvm.metadata" ; <%llvm.dbg.subprogram.type*> [#uses=1]
+ at llvm.dbg.subprograms = linkonce constant %llvm.dbg.anchor.type { i32 393216, i32 46 }, section "llvm.metadata" ; <%llvm.dbg.anchor.type*> [#uses=1]
+ at llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type {
+ i32 393233,
+ %struct.anon* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to %struct.anon*),
+ i32 1,
+ i8* getelementptr ([6 x i8]* @.str, i32 0, i32 0),
+ i8* getelementptr ([23 x i8]* @.str1, i32 0, i32 0),
+ i8* getelementptr ([52 x i8]* @.str2, i32 0, i32 0) }, section "llvm.metadata" ; <%llvm.dbg.compile_unit.type*> [#uses=1]
+ at llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 393216, i32 17 }, section "llvm.metadata" ; <%llvm.dbg.anchor.type*> [#uses=1]
+ at .str = internal constant [6 x i8] c"foo.c\00", section "llvm.metadata" ; <[6 x i8]*> [#uses=1]
+ at .str1 = internal constant [23 x i8] c"/Volumes/MacOS9/tests/\00", section "llvm.metadata" ; <[23 x i8]*> [#uses=1]
+ at .str2 = internal constant [52 x i8] c"4.2.1 (Based on Apple Inc. build 5546) (LLVM build)\00", section "llvm.metadata" ; <[52 x i8]*> [#uses=1]
+ at .str3 = internal constant [4 x i8] c"var\00", section "llvm.metadata" ; <[4 x i8]*> [#uses=1]
+ at llvm.dbg.derivedtype = internal constant %llvm.dbg.derivedtype.type {
+ i32 393231,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i8* null,
+ %struct.anon* null,
+ i32 0,
+ i64 32,
+ i64 32,
+ i64 0,
+ i32 0,
+ %struct.anon* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to %struct.anon*) }, section "llvm.metadata" ; <%llvm.dbg.derivedtype.type*> [#uses=1]
+ at llvm.dbg.basictype = internal constant %llvm.dbg.basictype.type {
+ i32 393252,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i8* getelementptr ([5 x i8]* @.str4, i32 0, i32 0),
+ %struct.anon* null,
+ i32 0,
+ i64 8,
+ i64 8,
+ i64 0,
+ i32 0,
+ i32 6 }, section "llvm.metadata" ; <%llvm.dbg.basictype.type*> [#uses=1]
+ at .str4 = internal constant [5 x i8] c"char\00", section "llvm.metadata" ; <[5 x i8]*> [#uses=1]
+ at llvm.dbg.variable = internal constant %llvm.dbg.variable.type {
+ i32 393474,
+ %struct.anon* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to %struct.anon*),
+ i8* getelementptr ([7 x i8]* @.str5, i32 0, i32 0),
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i32 2,
+ %struct.anon* bitcast (%llvm.dbg.derivedtype.type* @llvm.dbg.derivedtype to %struct.anon*) }, section "llvm.metadata" ; <%llvm.dbg.variable.type*> [#uses=1]
+ at .str5 = internal constant [7 x i8] c"retval\00", section "llvm.metadata" ; <[7 x i8]*> [#uses=1]
+ at a271 = weak global [0 x %struct.S271] zeroinitializer ; <[0 x %struct.S271]*> [#uses=3]
+ at llvm.dbg.subprogram6 = internal constant %llvm.dbg.subprogram.type {
+ i32 393262,
+ %struct.anon* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.subprograms to %struct.anon*),
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i8* getelementptr ([5 x i8]* @.str7, i32 0, i32 0),
+ i8* getelementptr ([5 x i8]* @.str7, i32 0, i32 0),
+ i8* null,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i32 3,
+ %struct.anon* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype8 to %struct.anon*),
+ i1 false,
+ i1 true }, section "llvm.metadata" ; <%llvm.dbg.subprogram.type*> [#uses=1]
+ at .str7 = internal constant [5 x i8] c"main\00", section "llvm.metadata" ; <[5 x i8]*> [#uses=1]
+ at llvm.dbg.basictype8 = internal constant %llvm.dbg.basictype.type {
+ i32 393252,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i8* getelementptr ([4 x i8]* @.str9, i32 0, i32 0),
+ %struct.anon* null,
+ i32 0,
+ i64 32,
+ i64 32,
+ i64 0,
+ i32 0,
+ i32 5 }, section "llvm.metadata" ; <%llvm.dbg.basictype.type*> [#uses=1]
+ at .str9 = internal constant [4 x i8] c"int\00", section "llvm.metadata" ; <[4 x i8]*> [#uses=1]
+ at llvm.dbg.variable10 = internal constant %llvm.dbg.variable.type {
+ i32 393474,
+ %struct.anon* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram6 to %struct.anon*),
+ i8* getelementptr ([7 x i8]* @.str5, i32 0, i32 0),
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i32 3,
+ %struct.anon* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype8 to %struct.anon*) }, section "llvm.metadata" ; <%llvm.dbg.variable.type*> [#uses=1]
+ at llvm.dbg.global_variable = internal constant %llvm.dbg.global_variable.type {
+ i32 393268,
+ %struct.anon* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.global_variables to %struct.anon*),
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i8* getelementptr ([5 x i8]* @.str11, i32 0, i32 0),
+ i8* getelementptr ([5 x i8]* @.str11, i32 0, i32 0),
+ i8* null,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i32 1,
+ %struct.anon* bitcast (%llvm.dbg.compositetype.type* @llvm.dbg.compositetype to %struct.anon*),
+ i1 false,
+ i1 true,
+ %struct.anon* getelementptr ([0 x %struct.S271]* @a271, i32 0, i32 0, i32 0, i32 0) }, section "llvm.metadata" ; <%llvm.dbg.global_variable.type*> [#uses=0]
+ at llvm.dbg.global_variables = linkonce constant %llvm.dbg.anchor.type { i32 393216, i32 52 }, section "llvm.metadata" ; <%llvm.dbg.anchor.type*> [#uses=1]
+ at .str11 = internal constant [5 x i8] c"a271\00", section "llvm.metadata" ; <[5 x i8]*> [#uses=1]
+ at llvm.dbg.compositetype = internal constant %llvm.dbg.compositetype.type {
+ i32 393217,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i8* null,
+ %struct.anon* null,
+ i32 0,
+ i64 0,
+ i64 8,
+ i64 0,
+ i32 0,
+ %struct.anon* bitcast (%llvm.dbg.compositetype.type* @llvm.dbg.compositetype12 to %struct.anon*),
+ %struct.anon* bitcast ([1 x %struct.anon*]* @llvm.dbg.array25 to %struct.anon*) }, section "llvm.metadata" ; <%llvm.dbg.compositetype.type*> [#uses=1]
+ at llvm.dbg.compositetype12 = internal constant %llvm.dbg.compositetype.type {
+ i32 393235,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i8* getelementptr ([5 x i8]* @.str13, i32 0, i32 0),
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i32 1,
+ i64 0,
+ i64 8,
+ i64 0,
+ i32 0,
+ %struct.anon* null,
+ %struct.anon* bitcast ([2 x %struct.anon*]* @llvm.dbg.array23 to %struct.anon*) }, section "llvm.metadata" ; <%llvm.dbg.compositetype.type*> [#uses=1]
+ at .str13 = internal constant [5 x i8] c"S271\00", section "llvm.metadata" ; <[5 x i8]*> [#uses=1]
+ at llvm.dbg.derivedtype14 = internal constant %llvm.dbg.derivedtype.type {
+ i32 393229,
+ %struct.anon* null,
+ i8* getelementptr ([2 x i8]* @.str15, i32 0, i32 0),
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i32 1,
+ i64 0,
+ i64 8,
+ i64 0,
+ i32 0,
+ %struct.anon* bitcast (%llvm.dbg.compositetype.type* @llvm.dbg.compositetype16 to %struct.anon*) }, section "llvm.metadata" ; <%llvm.dbg.derivedtype.type*> [#uses=1]
+ at .str15 = internal constant [2 x i8] c"a\00", section "llvm.metadata" ; <[2 x i8]*> [#uses=1]
+ at llvm.dbg.compositetype16 = internal constant %llvm.dbg.compositetype.type {
+ i32 393217,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i8* null,
+ %struct.anon* null,
+ i32 0,
+ i64 0,
+ i64 8,
+ i64 0,
+ i32 0,
+ %struct.anon* bitcast (%llvm.dbg.compositetype.type* @llvm.dbg.compositetype17 to %struct.anon*),
+ %struct.anon* bitcast ([1 x %struct.anon*]* @llvm.dbg.array18 to %struct.anon*) }, section "llvm.metadata" ; <%llvm.dbg.compositetype.type*> [#uses=1]
+ at llvm.dbg.compositetype17 = internal constant %llvm.dbg.compositetype.type {
+ i32 393235,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i8* null,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i32 1,
+ i64 0,
+ i64 8,
+ i64 0,
+ i32 0,
+ %struct.anon* null,
+ %struct.anon* bitcast ([0 x %struct.anon*]* @llvm.dbg.array to %struct.anon*) }, section "llvm.metadata" ; <%llvm.dbg.compositetype.type*> [#uses=1]
+ at llvm.dbg.array = internal constant [0 x %struct.anon*] zeroinitializer, section "llvm.metadata" ; <[0 x %struct.anon*]*> [#uses=1]
+ at llvm.dbg.subrange = internal constant %llvm.dbg.subrange.type {
+ i32 393249,
+ i64 0,
+ i64 4 }, section "llvm.metadata" ; <%llvm.dbg.subrange.type*> [#uses=1]
+ at llvm.dbg.array18 = internal constant [1 x %struct.anon*] [ %struct.anon* bitcast (%llvm.dbg.subrange.type* @llvm.dbg.subrange to %struct.anon*) ], section "llvm.metadata" ; <[1 x %struct.anon*]*> [#uses=1]
+ at llvm.dbg.derivedtype19 = internal constant %llvm.dbg.derivedtype.type {
+ i32 393229,
+ %struct.anon* null,
+ i8* getelementptr ([2 x i8]* @.str20, i32 0, i32 0),
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i32 1,
+ i64 0,
+ i64 8,
+ i64 0,
+ i32 0,
+ %struct.anon* bitcast (%llvm.dbg.compositetype.type* @llvm.dbg.compositetype21 to %struct.anon*) }, section "llvm.metadata" ; <%llvm.dbg.derivedtype.type*> [#uses=1]
+ at .str20 = internal constant [2 x i8] c"b\00", section "llvm.metadata" ; <[2 x i8]*> [#uses=1]
+ at llvm.dbg.compositetype21 = internal constant %llvm.dbg.compositetype.type {
+ i32 393235,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i8* null,
+ %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*),
+ i32 1,
+ i64 0,
+ i64 8,
+ i64 0,
+ i32 0,
+ %struct.anon* null,
+ %struct.anon* bitcast ([0 x %struct.anon*]* @llvm.dbg.array22 to %struct.anon*) }, section "llvm.metadata" ; <%llvm.dbg.compositetype.type*> [#uses=1]
+ at llvm.dbg.array22 = internal constant [0 x %struct.anon*] zeroinitializer, section "llvm.metadata" ; <[0 x %struct.anon*]*> [#uses=1]
+ at llvm.dbg.array23 = internal constant [2 x %struct.anon*] [ %struct.anon* bitcast (%llvm.dbg.derivedtype.type* @llvm.dbg.derivedtype14 to %struct.anon*), %struct.anon* bitcast (%llvm.dbg.derivedtype.type* @llvm.dbg.derivedtype19 to %struct.anon*) ], section "llvm.metadata" ; <[2 x %struct.anon*]*> [#uses=1]
+ at llvm.dbg.subrange24 = internal constant %llvm.dbg.subrange.type {
+ i32 393249,
+ i64 0,
+ i64 4 }, section "llvm.metadata" ; <%llvm.dbg.subrange.type*> [#uses=1]
+ at llvm.dbg.array25 = internal constant [1 x %struct.anon*] [ %struct.anon* bitcast (%llvm.dbg.subrange.type* @llvm.dbg.subrange24 to %struct.anon*) ], section "llvm.metadata" ; <[1 x %struct.anon*]*> [#uses=1]
+
+define i8* @var() {
+entry:
+ %retval = alloca i8* ; <i8**> [#uses=3]
+ %tmp = alloca i8* ; <i8**> [#uses=2]
+ %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
+ call void @llvm.dbg.func.start( %struct.anon* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to %struct.anon*) )
+ call void @llvm.dbg.stoppoint( i32 2, i32 0, %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*) )
+ %retval1 = bitcast i8** %retval to %struct.anon* ; <%struct.anon*> [#uses=1]
+ call void @llvm.dbg.declare( %struct.anon* %retval1, %struct.anon* bitcast (%llvm.dbg.variable.type* @llvm.dbg.variable to %struct.anon*) )
+ bitcast %struct.S271* getelementptr ([0 x %struct.S271]* @a271, i32 0, i32 0) to i8* ; <i8*>:0 [#uses=0]
+ store i8* bitcast ([0 x %struct.S271]* @a271 to i8*), i8** %tmp, align 4
+ %tmp2 = load i8** %tmp, align 4 ; <i8*> [#uses=1]
+ store i8* %tmp2, i8** %retval, align 4
+ br label %return
+
+return: ; preds = %entry
+ %retval3 = load i8** %retval ; <i8*> [#uses=1]
+ call void @llvm.dbg.stoppoint( i32 2, i32 0, %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*) )
+ call void @llvm.dbg.region.end( %struct.anon* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to %struct.anon*) )
+ ret i8* %retval3
+}
+
+declare void @llvm.dbg.func.start(%struct.anon*) nounwind
+
+declare void @llvm.dbg.stoppoint(i32, i32, %struct.anon*) nounwind
+
+declare void @llvm.dbg.declare(%struct.anon*, %struct.anon*) nounwind
+
+declare void @llvm.dbg.region.end(%struct.anon*) nounwind
+
+define i32 @main() {
+entry:
+ %retval = alloca i32 ; <i32*> [#uses=2]
+ %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
+ call void @llvm.dbg.func.start( %struct.anon* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram6 to %struct.anon*) )
+ call void @llvm.dbg.stoppoint( i32 3, i32 0, %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*) )
+ %retval1 = bitcast i32* %retval to %struct.anon* ; <%struct.anon*> [#uses=1]
+ call void @llvm.dbg.declare( %struct.anon* %retval1, %struct.anon* bitcast (%llvm.dbg.variable.type* @llvm.dbg.variable10 to %struct.anon*) )
+ br label %return
+
+return: ; preds = %entry
+ %retval2 = load i32* %retval ; <i32> [#uses=1]
+ call void @llvm.dbg.stoppoint( i32 3, i32 0, %struct.anon* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to %struct.anon*) )
+ call void @llvm.dbg.region.end( %struct.anon* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram6 to %struct.anon*) )
+ ret i32 %retval2
+}
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