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[DebugInfo] Inline for without DebugLocation

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Summary:
This test is a strip down version of a function inside the
amalgamated sqlite source. When converted to IR clang produces
a phi instruction without debug location.

This patch fixes the above issue.

Differential Revision: https://reviews.llvm.org/D47720

llvm-svn: 335255
This commit is contained in:
Anastasis Grammenos 2018-06-21 16:53:48 +00:00
parent 547adcaaac
commit dfe8fe503c
2 changed files with 19 additions and 0 deletions
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6
clang/lib/CodeGen/CGExprScalar.cpp
View File

@ -3431,6 +3431,12 @@ Value *ScalarExprEmitter::VisitBinLAnd(const BinaryOperator *E) {
// Insert an entry into the phi node for the edge with the value of RHSCond.
PN->addIncoming(RHSCond, RHSBlock);
// Artificial location to preserve the scope information
{
auto NL = ApplyDebugLocation::CreateArtificial(CGF);
PN->setDebugLoc(Builder.getCurrentDebugLocation());
}
// ZExt result to int.
return Builder.CreateZExtOrBitCast(PN, ResTy, "land.ext");
}

13
clang/test/CodeGen/debug-info-inline-for.c Normal file
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@ -0,0 +1,13 @@
// RUN: %clang_cc1 -debug-info-kind=limited -emit-llvm -o - %s | FileCheck %s
// Check that clang emits Debug location in the phi instruction
int func(int n) {
int a;
for(a = 10; a>0 && n++; a--);
return n;
}
// CHECK: land.end:
// CHECK-NEXT: {{.*}} = phi i1 {{.*}} !dbg ![[DbgLoc:[0-9]+]]
// CHECK: ![[DbgLoc]] = !DILocation(line: 0