diff options
Diffstat (limited to 'llvm/test/DebugInfo/X86/branch-folder-dbg.mir')
| -rw-r--r-- | llvm/test/DebugInfo/X86/branch-folder-dbg.mir | 46 |
1 files changed, 32 insertions, 14 deletions
diff --git a/llvm/test/DebugInfo/X86/branch-folder-dbg.mir b/llvm/test/DebugInfo/X86/branch-folder-dbg.mir index 5c38fd2..11b37218 100644 --- a/llvm/test/DebugInfo/X86/branch-folder-dbg.mir +++ b/llvm/test/DebugInfo/X86/branch-folder-dbg.mir @@ -1,16 +1,28 @@ -# RUN: llc %s --start-before=branch-folder --stop-after=branch-folder -o - | FileCheck %s +# RUN: llc %s --start-before=branch-folder --stop-after=branch-folder -o - \ +# RUN: | FileCheck %s --implicit-check-not=DBG_PHI ## Check that common instructions hoisted from `if.then` and `if.else` into -## common pred `entry` get merged debug locations. - -## FIXME: The debug instructions handling here is wrong. +## common pred `entry` get merged debug locations. The debug instructions from +## both branches should get hoisted and killed. +## +## The MIR debug instructions have been modified by hand in order to check they +## can be killed. +## +## Check DBG_PHIs are deleted rather than hoisted (implicit-check-not). +## +## Check DBG_LABELs are hoisted and not modified (and don't cause a crash). # CHECK: bb.0 # CHECK: CALL64pcrel32 @f, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax -## --- Start splice from bb.2.if.else --- -# CHECK-NEXT: DBG_VALUE 2, $noreg, ![[#]], !DIExpression(), debug-location ![[#]] -# CHECK-NEXT: $edi = MOV32r0 implicit-def dead $eflags, debug-location !DILocation(line: 0, scope: ![[#]]) -## --- End splice -------------- +## --- Start splice from bb.2.if.else (and debug instructions from bb.1.if.then) --- +# CHECK-NEXT: DBG_LABEL 0 +# CHECK-NEXT: DBG_VALUE $noreg, $noreg, ![[#]], !DIExpression(), debug-location ![[#]] +# CHECK-NEXT: DBG_LABEL 1 +# CHECK-NEXT: DBG_VALUE $noreg, $noreg, ![[#]], !DIExpression(), debug-location ![[#]] +# CHECK-NEXT: $edi = MOV32r0 implicit-def dead $eflags, debug-instr-number 2, debug-location !DILocation(line: 0, scope: ![[#]]) +# CHECK-NEXT: DBG_VALUE $noreg, $noreg, ![[#]], !DIExpression(DW_OP_LLVM_arg, 0), debug-location ![[#]] +# CHECK-NEXT: DBG_VALUE $noreg, $noreg, ![[#]], !DIExpression(DW_OP_LLVM_arg, 0), debug-location ![[#]] +## --- End splice ------------------------------------------------------------------ # CHECK-NEXT: TEST64rr killed renamable $rax, renamable $rax, implicit-def $eflags # CHECK-NEXT: JCC_1 %bb.2, 9, implicit killed $eflags # CHECK: bb.1 @@ -73,6 +85,8 @@ ... --- name: g +tracksRegLiveness: true +isSSA: false body: | bb.0 (%ir-block.0): successors: %bb.1(0x40000000), %bb.2(0x40000000) @@ -87,21 +101,25 @@ body: | bb.1.if.then: successors: %bb.3(0x80000000) - DBG_VALUE 0, $noreg, !11, !DIExpression(), debug-location !13 - $edi = MOV32r0 implicit-def dead $eflags, debug-location !14 + DBG_PHI $esp, 3 + DBG_LABEL 0 + DBG_VALUE $esi, $noreg, !11, !DIExpression(), debug-location !13 + $edi = MOV32r0 implicit-def dead $eflags, debug-instr-number 1, debug-location !14 + DBG_INSTR_REF !11, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !13 $esi = MOV32r0 implicit-def dead $eflags, debug-location !14 CALL64pcrel32 target-flags(x86-plt) @_Z3fooii, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit killed $esi, implicit-def $rsp, implicit-def $ssp, debug-location !14 - DBG_VALUE 1, $noreg, !11, !DIExpression(), debug-location !13 JMP_1 %bb.3, debug-location !15 bb.2.if.else: successors: %bb.3(0x80000000) - DBG_VALUE 2, $noreg, !11, !DIExpression(), debug-location !13 - $edi = MOV32r0 implicit-def dead $eflags, debug-location !16 + DBG_PHI $esp, 4 + DBG_LABEL 1 + DBG_VALUE $esp, $noreg, !11, !DIExpression(), debug-location !13 + $edi = MOV32r0 implicit-def dead $eflags, debug-instr-number 2, debug-location !16 + DBG_INSTR_REF !11, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(2, 0), debug-location !13 $esi = MOV32ri 1, debug-location !16 CALL64pcrel32 target-flags(x86-plt) @_Z3barii, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit killed $esi, implicit-def $rsp, implicit-def $ssp, debug-location !16 - DBG_VALUE 3, $noreg, !11, !DIExpression(), debug-location !13 bb.3.if.end: $eax = MOV32ri 2 |