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Preserve line number information while simplifying libcalls.

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llvm-svn: 127362
This commit is contained in:
Devang Patel 2011-03-09 21:27:52 +00:00
parent 61f9a3dab2
commit 7a4edc6463
2 changed files with 27 additions and 0 deletions
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3
lib/Transforms/Scalar/SimplifyLibCalls.cpp
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@ -1616,6 +1616,9 @@ bool SimplifyLibCalls::runOnFunction(Function &F) {
// Set the builder to the instruction after the call.
Builder.SetInsertPoint(BB, I);
// Use debug location of CI for all new instructions.
Builder.SetCurrentDebugLocation(CI->getDebugLoc());
// Try to optimize this call.
Value *Result = LCO->OptimizeCall(CI, TD, TLI, Builder);
if (Result == 0) continue;

24
test/Transforms/SimplifyLibCalls/debug-line.ll Normal file
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@ -0,0 +1,24 @@
; RUN: opt -simplify-libcalls -S < %s | FileCheck %s
@.str = private constant [3 x i8] c"%c\00"
define void @foo() nounwind ssp {
;CHECK: call i32 @putchar{{.+}} !dbg
%1 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([3 x i8]* @.str, i32 0, i32 0), i32 97), !dbg !5
ret void, !dbg !7
}
declare i32 @printf(i8*, ...)
!llvm.dbg.sp = !{!0}
!0 = metadata !{i32 589870, i32 0, metadata !1, metadata !"foo", metadata !"foo", metadata !"", metadata !1, i32 4, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 false, void ()* @foo} ; [ DW_TAG_subprogram ]
!1 = metadata !{i32 589865, metadata !"m.c", metadata !"/private/tmp", metadata !2} ; [ DW_TAG_file_type ]
!2 = metadata !{i32 589841, i32 0, i32 12, metadata !"m.c", metadata !"/private/tmp", metadata !"clang", i1 true, i1 false, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
!3 = metadata !{i32 589845, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !4, i32 0, null} ; [ DW_TAG_subroutine_type ]
!4 = metadata !{null}
!5 = metadata !{i32 5, i32 2, metadata !6, null}
!6 = metadata !{i32 589835, metadata !0, i32 4, i32 12, metadata !1, i32 0} ; [ DW_TAG_lexical_block ]
!7 = metadata !{i32 6, i32 1, metadata !6, null}