| # RUN: llc -mtriple=hexagon -run-pass expand-condsets -o - %s | FileCheck %s |
| |
| ## Check that HexagonExpandCondsets ignores debug instructions when it looks |
| ## for registers defined and used between the definition of the source register |
| ## and the conditional transfer. A DBG_VALUE in that range must not prevent the |
| ## A2_asrh feeding the C2_mux from being predicated. |
| |
| # CHECK-LABEL: name: fred |
| # CHECK-NOT: A2_asrh |
| # CHECK: DBG_VALUE |
| # CHECK: A2_tfrt |
| # CHECK-NEXT: A4_pasrhf |
| |
| --- | |
| define void @fred() !dbg !5 { |
| ret void |
| } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!2, !3} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug) |
| !1 = !DIFile(filename: "t.c", directory: "/") |
| !2 = !{i32 2, !"Debug Info Version", i32 3} |
| !3 = !{i32 7, !"Dwarf Version", i32 4} |
| !4 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !5 = distinct !DISubprogram(name: "fred", scope: !1, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0) |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{null} |
| !8 = !DILocalVariable(name: "a", scope: !5, file: !1, line: 2, type: !4) |
| !9 = !DILocation(line: 2, column: 1, scope: !5) |
| ... |
| --- |
| name: fred |
| tracksRegLiveness: true |
| isSSA: false |
| registers: |
| - { id: 0, class: intregs } |
| - { id: 1, class: intregs } |
| - { id: 2, class: predregs } |
| - { id: 3, class: intregs } |
| - { id: 4, class: intregs } |
| liveins: |
| - { reg: '$r0', virtual-reg: '%0' } |
| - { reg: '$r1', virtual-reg: '%1' } |
| - { reg: '$p0', virtual-reg: '%2' } |
| body: | |
| bb.0: |
| liveins: $r0, $r1, $p0 |
| |
| %0 = COPY $r0 |
| %1 = COPY $r1 |
| %2 = COPY $p0 |
| %3 = A2_asrh %1 |
| DBG_VALUE $noreg, $noreg, !8, !DIExpression(), debug-location !9 |
| %4 = C2_mux %2, %0, %3 |
| $r0 = COPY %4 |
| J2_jumpr $r31, implicit $r0, implicit-def $pc |
| ... |
