| ; RUN: opt -S -callsite-splitting -o - < %s | FileCheck %s |
| ; RUN: opt -S -strip-debug -callsite-splitting -o - < %s | FileCheck %s |
| |
| define internal i16 @bar(i16 %p1, i16 %p2) { |
| %_tmp3 = mul i16 %p2, %p1 |
| ret i16 %_tmp3 |
| } |
| |
| define i16 @foo(i16 %in) { |
| bb0: |
| br label %bb1 |
| |
| bb1: |
| %0 = icmp ne i16 %in, 0 |
| br i1 %0, label %bb2, label %CallsiteBB |
| |
| bb2: |
| br label %CallsiteBB |
| |
| CallsiteBB: |
| %1 = phi i16 [ 0, %bb1 ], [ 1, %bb2 ] |
| %c = phi i16 [ 2, %bb1 ], [ 3, %bb2 ] |
| call void @llvm.dbg.value(metadata i16 %c, metadata !7, metadata !DIExpression()), !dbg !8 |
| %2 = call i16 @bar(i16 %1, i16 5) |
| ret i16 %2 |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #0 |
| |
| attributes #0 = { nounwind readnone speculatable } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!2, !3} |
| !llvm.ident = !{!4} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "My Compiler") |
| !1 = !DIFile(filename: "foo.c", directory: "/bar") |
| !2 = !{i32 2, !"Dwarf Version", i32 4} |
| !3 = !{i32 2, !"Debug Info Version", i32 3} |
| !4 = !{!"My Compiler"} |
| !5 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed) |
| !6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 4, unit: !0) |
| !7 = !DILocalVariable(name: "c", scope: !6, line: 5, type: !5) |
| !8 = !DILocation(line: 5, column: 7, scope: !6) |
| |
| ; The optimization should trigger even in the presence of the dbg.value in |
| ; CallSiteBB. |
| |
| ; CHECK-LABEL: @foo |
| ; CHECK-LABEL: bb1.split: |
| ; CHECK: [[TMP1:%[0-9]+]] = call i16 @bar(i16 0, i16 5) |
| ; CHECK-LABEL: bb2.split: |
| ; CHECK: [[TMP2:%[0-9]+]] = call i16 @bar(i16 1, i16 5) |
| ; CHECK-LABEL: CallsiteBB |
| ; CHECK: %phi.call = phi i16 [ [[TMP2]], %bb2.split ], [ [[TMP1]], %bb1.split |
