[Utils] Salvage debug info from all no-op casts
We already try to salvage debug values from no-op bitcasts and inttoptr
instructions: we should handle ptrtoint instructions as well.
This saves an additional 24,444 debug values in a stage2 build of clang,
and (according to llvm-dwarfdump --statistics) provides an additional
289 unique source variables.
llvm-svn: 324982
diff --git a/llvm/test/Transforms/InstCombine/debuginfo-variables.ll b/llvm/test/Transforms/InstCombine/debuginfo-variables.ll
index 418ef81..d420346 100644
--- a/llvm/test/Transforms/InstCombine/debuginfo-variables.ll
+++ b/llvm/test/Transforms/InstCombine/debuginfo-variables.ll
@@ -80,6 +80,13 @@
ret void
}
+define void @test_ptrtoint(i64* %P) {
+; CHECK-LABEL: @test_ptrtoint
+; CHECK-NEXT: call void @llvm.dbg.value(metadata i64* %P, metadata !67, metadata !DIExpression()), !dbg !68
+ %1 = ptrtoint i64* %P to i64
+ ret void
+}
+
; CHECK: !8 = !DILocalVariable(name: "1", scope: !5, file: !1, line: 1, type: !9)
; CHECK: !10 = !DILocalVariable(name: "2", scope: !5, file: !1, line: 2, type: !11)
; CHECK: !12 = !DILocation(line: 2, column: 1, scope: !5)
@@ -114,3 +121,6 @@
; CHECK: !62 = !DILocalVariable(name: "12", scope: !60, file: !1, line: 22, type: !11)
; CHECK: !63 = !DILocation(line: 22, column: 1, scope: !60)
+
+; CHECK: !67 = !DILocalVariable(name: "13", scope: !65, file: !1, line: 24, type: !11)
+; CHECK: !68 = !DILocation(line: 24, column: 1, scope: !65)