mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-01-19 04:32:19 +00:00
02474a32eb
argument of the llvm.dbg.declare/llvm.dbg.value intrinsics. Previously, DIVariable was a variable-length field that has an optional reference to a Metadata array consisting of a variable number of complex address expressions. In the case of OpPiece expressions this is wasting a lot of storage in IR, because when an aggregate type is, e.g., SROA'd into all of its n individual members, the IR will contain n copies of the DIVariable, all alike, only differing in the complex address reference at the end. By making the complex address into an extra argument of the dbg.value/dbg.declare intrinsics, all of the pieces can reference the same variable and the complex address expressions can be uniqued across the CU, too. Down the road, this will allow us to move other flags, such as "indirection" out of the DIVariable, too. The new intrinsics look like this: declare void @llvm.dbg.declare(metadata %storage, metadata %var, metadata %expr) declare void @llvm.dbg.value(metadata %storage, i64 %offset, metadata %var, metadata %expr) This patch adds a new LLVM-local tag to DIExpressions, so we can detect and pretty-print DIExpression metadata nodes. What this patch doesn't do: This patch does not touch the "Indirect" field in DIVariable; but moving that into the expression would be a natural next step. http://reviews.llvm.org/D4919 rdar://problem/17994491 Thanks to dblaikie and dexonsmith for reviewing this patch! Note: I accidentally committed a bogus older version of this patch previously. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218787 91177308-0d34-0410-b5e6-96231b3b80d8
242 lines
12 KiB
LLVM
242 lines
12 KiB
LLVM
; RUN: llc -filetype=obj -mtriple=x86_64-pc-linux-gnu %s -o %t
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; RUN: llvm-readobj --relocations %t | FileCheck %s
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; Check that we don't have any relocations in the ranges section -
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; to show that we're producing this as a relative offset to the
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; low_pc for the compile unit.
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; CHECK-NOT: .rela.debug_ranges
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@llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 0, void ()* @__msan_init }]
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@str = private unnamed_addr constant [4 x i8] c"zzz\00"
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@__msan_retval_tls = external thread_local(initialexec) global [8 x i64]
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@__msan_retval_origin_tls = external thread_local(initialexec) global i32
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@__msan_param_tls = external thread_local(initialexec) global [1000 x i64]
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@__msan_param_origin_tls = external thread_local(initialexec) global [1000 x i32]
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@__msan_va_arg_tls = external thread_local(initialexec) global [1000 x i64]
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@__msan_va_arg_overflow_size_tls = external thread_local(initialexec) global i64
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@__msan_origin_tls = external thread_local(initialexec) global i32
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@__executable_start = external hidden global i32
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@_end = external hidden global i32
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; Function Attrs: sanitize_memory uwtable
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define void @_Z1fv() #0 {
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entry:
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%p = alloca i32*, align 8
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%0 = ptrtoint i32** %p to i64, !dbg !19
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%1 = and i64 %0, -70368744177672, !dbg !19
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%2 = inttoptr i64 %1 to i64*, !dbg !19
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store i64 -1, i64* %2, align 8, !dbg !19
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store i64 0, i64* getelementptr inbounds ([1000 x i64]* @__msan_param_tls, i64 0, i64 0), align 8, !dbg !19
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store i64 0, i64* getelementptr inbounds ([8 x i64]* @__msan_retval_tls, i64 0, i64 0), align 8, !dbg !19
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%call = call i8* @_Znwm(i64 4) #4, !dbg !19
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%_msret = load i64* getelementptr inbounds ([8 x i64]* @__msan_retval_tls, i64 0, i64 0), align 8, !dbg !19
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%3 = bitcast i8* %call to i32*, !dbg !19
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tail call void @llvm.dbg.value(metadata !{i32* %3}, i64 0, metadata !9, metadata !{i32 786690}), !dbg !19
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%4 = inttoptr i64 %1 to i64*, !dbg !19
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store i64 %_msret, i64* %4, align 8, !dbg !19
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store volatile i32* %3, i32** %p, align 8, !dbg !19
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tail call void @llvm.dbg.value(metadata !{i32** %p}, i64 0, metadata !9, metadata !{i32 786690}), !dbg !19
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%p.0.p.0. = load volatile i32** %p, align 8, !dbg !20
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%_msld = load i64* %4, align 8, !dbg !20
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%_mscmp = icmp eq i64 %_msld, 0, !dbg !20
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br i1 %_mscmp, label %6, label %5, !dbg !20, !prof !22
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; <label>:5 ; preds = %entry
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call void @__msan_warning_noreturn(), !dbg !20
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call void asm sideeffect "", ""() #3, !dbg !20
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unreachable, !dbg !20
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; <label>:6 ; preds = %entry
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%7 = load i32* %p.0.p.0., align 4, !dbg !20, !tbaa !23
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%8 = ptrtoint i32* %p.0.p.0. to i64, !dbg !20
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%9 = and i64 %8, -70368744177665, !dbg !20
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%10 = inttoptr i64 %9 to i32*, !dbg !20
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%_msld2 = load i32* %10, align 4, !dbg !20
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%11 = icmp ne i32 %_msld2, 0, !dbg !20
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%12 = xor i32 %_msld2, -1, !dbg !20
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%13 = and i32 %7, %12, !dbg !20
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%14 = icmp eq i32 %13, 0, !dbg !20
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%_msprop_icmp = and i1 %11, %14, !dbg !20
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br i1 %_msprop_icmp, label %15, label %16, !dbg !20, !prof !27
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; <label>:15 ; preds = %6
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call void @__msan_warning_noreturn(), !dbg !20
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call void asm sideeffect "", ""() #3, !dbg !20
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unreachable, !dbg !20
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; <label>:16 ; preds = %6
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%tobool = icmp eq i32 %7, 0, !dbg !20
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br i1 %tobool, label %if.end, label %if.then, !dbg !20
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if.then: ; preds = %16
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store i64 0, i64* getelementptr inbounds ([1000 x i64]* @__msan_param_tls, i64 0, i64 0), align 8, !dbg !28
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store i32 0, i32* bitcast ([8 x i64]* @__msan_retval_tls to i32*), align 8, !dbg !28
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%puts = call i32 @puts(i8* getelementptr inbounds ([4 x i8]* @str, i64 0, i64 0)), !dbg !28
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br label %if.end, !dbg !28
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if.end: ; preds = %16, %if.then
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ret void, !dbg !29
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}
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; Function Attrs: nobuiltin
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declare i8* @_Znwm(i64) #1
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; Function Attrs: sanitize_memory uwtable
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define i32 @main() #0 {
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entry:
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%p.i = alloca i32*, align 8
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%0 = ptrtoint i32** %p.i to i64, !dbg !30
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%1 = and i64 %0, -70368744177672, !dbg !30
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%2 = inttoptr i64 %1 to i64*, !dbg !30
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store i64 -1, i64* %2, align 8, !dbg !30
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%p.i.0..sroa_cast = bitcast i32** %p.i to i8*, !dbg !30
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call void @llvm.lifetime.start(i64 8, i8* %p.i.0..sroa_cast), !dbg !30
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store i64 0, i64* getelementptr inbounds ([1000 x i64]* @__msan_param_tls, i64 0, i64 0), align 8, !dbg !30
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store i64 0, i64* getelementptr inbounds ([8 x i64]* @__msan_retval_tls, i64 0, i64 0), align 8, !dbg !30
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%call.i = call i8* @_Znwm(i64 4) #4, !dbg !30
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%_msret = load i64* getelementptr inbounds ([8 x i64]* @__msan_retval_tls, i64 0, i64 0), align 8, !dbg !30
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%3 = bitcast i8* %call.i to i32*, !dbg !30
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tail call void @llvm.dbg.value(metadata !{i32* %3}, i64 0, metadata !32, metadata !{i32 786690}), !dbg !30
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%4 = inttoptr i64 %1 to i64*, !dbg !30
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store i64 %_msret, i64* %4, align 8, !dbg !30
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store volatile i32* %3, i32** %p.i, align 8, !dbg !30
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tail call void @llvm.dbg.value(metadata !{i32** %p.i}, i64 0, metadata !32, metadata !{i32 786690}), !dbg !30
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%p.i.0.p.0.p.0..i = load volatile i32** %p.i, align 8, !dbg !33
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%_msld = load i64* %4, align 8, !dbg !33
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%_mscmp = icmp eq i64 %_msld, 0, !dbg !33
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br i1 %_mscmp, label %6, label %5, !dbg !33, !prof !22
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; <label>:5 ; preds = %entry
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call void @__msan_warning_noreturn(), !dbg !33
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call void asm sideeffect "", ""() #3, !dbg !33
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unreachable, !dbg !33
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; <label>:6 ; preds = %entry
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%7 = load i32* %p.i.0.p.0.p.0..i, align 4, !dbg !33, !tbaa !23
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%8 = ptrtoint i32* %p.i.0.p.0.p.0..i to i64, !dbg !33
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%9 = and i64 %8, -70368744177665, !dbg !33
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%10 = inttoptr i64 %9 to i32*, !dbg !33
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%_msld2 = load i32* %10, align 4, !dbg !33
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%11 = icmp ne i32 %_msld2, 0, !dbg !33
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%12 = xor i32 %_msld2, -1, !dbg !33
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%13 = and i32 %7, %12, !dbg !33
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%14 = icmp eq i32 %13, 0, !dbg !33
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%_msprop_icmp = and i1 %11, %14, !dbg !33
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br i1 %_msprop_icmp, label %15, label %16, !dbg !33, !prof !27
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; <label>:15 ; preds = %6
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call void @__msan_warning_noreturn(), !dbg !33
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call void asm sideeffect "", ""() #3, !dbg !33
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unreachable, !dbg !33
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; <label>:16 ; preds = %6
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%tobool.i = icmp eq i32 %7, 0, !dbg !33
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br i1 %tobool.i, label %_Z1fv.exit, label %if.then.i, !dbg !33
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if.then.i: ; preds = %16
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store i64 0, i64* getelementptr inbounds ([1000 x i64]* @__msan_param_tls, i64 0, i64 0), align 8, !dbg !34
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store i32 0, i32* bitcast ([8 x i64]* @__msan_retval_tls to i32*), align 8, !dbg !34
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%puts.i = call i32 @puts(i8* getelementptr inbounds ([4 x i8]* @str, i64 0, i64 0)), !dbg !34
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br label %_Z1fv.exit, !dbg !34
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_Z1fv.exit: ; preds = %16, %if.then.i
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call void @llvm.lifetime.end(i64 8, i8* %p.i.0..sroa_cast), !dbg !35
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store i32 0, i32* bitcast ([8 x i64]* @__msan_retval_tls to i32*), align 8, !dbg !36
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ret i32 0, !dbg !36
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}
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declare void @__msan_init()
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
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; Function Attrs: nounwind
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declare i32 @puts(i8* nocapture readonly) #3
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; Function Attrs: nounwind
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declare void @llvm.lifetime.start(i64, i8* nocapture) #3
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; Function Attrs: nounwind
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declare void @llvm.lifetime.end(i64, i8* nocapture) #3
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declare void @__msan_warning_noreturn()
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declare void @__msan_maybe_warning_1(i8, i32)
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declare void @__msan_maybe_store_origin_1(i8, i8*, i32)
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declare void @__msan_maybe_warning_2(i16, i32)
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declare void @__msan_maybe_store_origin_2(i16, i8*, i32)
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declare void @__msan_maybe_warning_4(i32, i32)
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declare void @__msan_maybe_store_origin_4(i32, i8*, i32)
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declare void @__msan_maybe_warning_8(i64, i32)
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declare void @__msan_maybe_store_origin_8(i64, i8*, i32)
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declare void @__msan_set_alloca_origin4(i8*, i64, i8*, i64)
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declare void @__msan_poison_stack(i8*, i64)
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declare i32 @__msan_chain_origin(i32)
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declare i8* @__msan_memmove(i8*, i8*, i64)
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declare i8* @__msan_memcpy(i8*, i8*, i64)
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declare i8* @__msan_memset(i8*, i32, i64)
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; Function Attrs: nounwind
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declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) #3
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attributes #0 = { sanitize_memory uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nobuiltin "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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attributes #4 = { builtin }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!16, !17}
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!llvm.ident = !{!18}
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!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0 (trunk 207243) (llvm/trunk 207259)", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/usr/local/google/home/echristo/tmp/foo.cpp] [DW_LANG_C_plus_plus]
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!1 = metadata !{metadata !"foo.cpp", metadata !"/usr/local/google/home/echristo/tmp"}
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!2 = metadata !{}
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!3 = metadata !{metadata !4, metadata !13}
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!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"f", metadata !"f", metadata !"_Z1fv", i32 3, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void ()* @_Z1fv, null, null, metadata !8, i32 3} ; [ DW_TAG_subprogram ] [line 3] [def] [f]
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!5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/usr/local/google/home/echristo/tmp/foo.cpp]
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!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!7 = metadata !{null}
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!8 = metadata !{metadata !9}
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!9 = metadata !{i32 786688, metadata !4, metadata !"p", metadata !5, i32 4, metadata !10, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [p] [line 4]
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!10 = metadata !{i32 786485, null, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, metadata !11} ; [ DW_TAG_volatile_type ] [line 0, size 0, align 0, offset 0] [from ]
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!11 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !12} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int]
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!12 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
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!13 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"main", metadata !"main", metadata !"", i32 9, metadata !14, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i32 ()* @main, null, null, metadata !2, i32 9} ; [ DW_TAG_subprogram ] [line 9] [def] [main]
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!14 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !15, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!15 = metadata !{metadata !12}
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!16 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
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!17 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
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!18 = metadata !{metadata !"clang version 3.5.0 (trunk 207243) (llvm/trunk 207259)"}
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!19 = metadata !{i32 4, i32 0, metadata !4, null}
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!20 = metadata !{i32 5, i32 0, metadata !21, null}
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!21 = metadata !{i32 786443, metadata !1, metadata !4, i32 5, i32 0, i32 0, i32 0} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/echristo/tmp/foo.cpp]
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!22 = metadata !{metadata !"branch_weights", i32 1000, i32 1}
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!23 = metadata !{metadata !24, metadata !24, i64 0}
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!24 = metadata !{metadata !"int", metadata !25, i64 0}
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!25 = metadata !{metadata !"omnipotent char", metadata !26, i64 0}
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!26 = metadata !{metadata !"Simple C/C++ TBAA"}
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!27 = metadata !{metadata !"branch_weights", i32 1, i32 1000}
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!28 = metadata !{i32 6, i32 0, metadata !21, null}
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!29 = metadata !{i32 7, i32 0, metadata !4, null}
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!30 = metadata !{i32 4, i32 0, metadata !4, metadata !31}
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!31 = metadata !{i32 10, i32 0, metadata !13, null}
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!32 = metadata !{i32 786688, metadata !4, metadata !"p", metadata !5, i32 4, metadata !10, i32 0, metadata !31} ; [ DW_TAG_auto_variable ] [p] [line 4]
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!33 = metadata !{i32 5, i32 0, metadata !21, metadata !31}
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!34 = metadata !{i32 6, i32 0, metadata !21, metadata !31}
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!35 = metadata !{i32 7, i32 0, metadata !4, metadata !31}
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!36 = metadata !{i32 11, i32 0, metadata !13, null}
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