# We do not support the call site info for the target now, so we use the experimental option (-emit-call-site-info -debug-entry-values).
# RUN: llc -emit-call-site-info -debug-entry-values -mtriple hexagon -start-after=machineverifier -filetype=obj %s -o - | llvm-dwarfdump - | FileCheck %s
# Based on the following C reproducer:
#
# int ga, gb, gc;
#
# extern void callee(int, int, int);
#
# void caller() {
# int a = ga;
# int b = gb;
# int c = gc;
#
# // Clobber all integer registers.
# __asm("" : : :
# "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10",
# "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", "r20",
# "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28");
#
# callee(a, b, c);
# }
--- |
target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048"
target triple = "hexagon"
@ga = common global i32 0, align 4
@gb = common global i32 0, align 4
@gc = common global i32 0, align 4
; Function Attrs: nounwind
define void @caller() #0 !dbg !12 {
entry:
%0 = load i32, i32* @ga, align 4, !dbg !15
%1 = load i32, i32* @gb, align 4, !dbg !16
%2 = load i32, i32* @gc, align 4, !dbg !17
call void asm sideeffect "", "~{r0},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{r16},~{r17},~{r18},~{r19},~{r20},~{r21},~{r22},~{r23},~{r24},~{r25},~{r26},~{r27},~{r28}"(), !dbg !18, !srcloc !19
call void @callee(i32 %0, i32 %1, i32 %2), !dbg !20
ret void, !dbg !21
}
declare !dbg !4 void @callee(i32, i32, i32)
attributes #0 = { nounwind }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!8, !9, !10}
!llvm.ident = !{!11}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, globals: !2, nameTableKind: None)
!1 = !DIFile(filename: "h.c", directory: "/")
!2 = !{}
!3 = !{!4}
!4 = !DISubprogram(name: "callee", scope: !1, file: !1, line: 3, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!5 = !DISubroutineType(types: !6)
!6 = !{null, !7, !7, !7}
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!8 = !{i32 7, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{i32 1, !"wchar_size", i32 4}
!11 = !{!"clang version 10.0.0"}
!12 = distinct !DISubprogram(name: "caller", scope: !1, file: !1, line: 5, type: !13, scopeLine: 5, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
!13 = !DISubroutineType(types: !14)
!14 = !{null}
!15 = !DILocation(line: 6, scope: !12)
!16 = !DILocation(line: 7, scope: !12)
!17 = !DILocation(line: 8, scope: !12)
!18 = !DILocation(line: 11, scope: !12)
!19 = !{i32 158}
!20 = !DILocation(line: 16, scope: !12)
!21 = !DILocation(line: 17, scope: !12)
...
---
name: caller
tracksRegLiveness: true
frameInfo:
stackSize: 64
maxAlignment: 4
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
fixedStack:
- { id: 0, type: spill-slot, offset: -48, size: 8, alignment: 8, callee-saved-register: '$d13' }
- { id: 1, type: spill-slot, offset: -40, size: 8, alignment: 8, callee-saved-register: '$d12' }
- { id: 2, type: spill-slot, offset: -32, size: 8, alignment: 8, callee-saved-register: '$d11' }
- { id: 3, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$d10' }
- { id: 4, type: spill-slot, offset: -16, size: 8, alignment: 8, callee-saved-register: '$d9' }
- { id: 5, type: spill-slot, offset: -8, size: 8, alignment: 8, callee-saved-register: '$d8' }
stack:
- { id: 0, type: spill-slot, offset: -52, size: 4, alignment: 4 }
- { id: 1, type: spill-slot, offset: -56, size: 4, alignment: 4 }
- { id: 2, type: spill-slot, offset: -60, size: 4, alignment: 4 }
callSites:
- { bb: 0, offset: 40, fwdArgRegs:
- { arg: 0, reg: '$r0' }
- { arg: 1, reg: '$r1' }
- { arg: 2, reg: '$r2' } }
body: |
bb.0.entry:
liveins: $d8, $d9, $d10, $d11, $d12, $d13, $d8, $d9, $d10, $d11, $d12, $d13
BUNDLE implicit-def $r29, implicit-def $r30, implicit $r29, implicit killed $framekey, implicit killed $framelimit, implicit killed $r30, implicit killed $r31, implicit killed $d8, debug-location !15 {
$r29 = S2_allocframe $r29, 64, implicit-def $r30, implicit killed $framekey, implicit killed $framelimit, implicit killed $r30, implicit killed $r31, debug-location !15 :: (store (s32) into stack)
S2_storerd_io internal $r29, -16, killed $d8, debug-location !15 :: (store (s64) into %fixed-stack.5)
}
CFI_INSTRUCTION def_cfa $r30, 8
CFI_INSTRUCTION offset $r31, -4
CFI_INSTRUCTION offset $r30, -8
CFI_INSTRUCTION offset $r17, -12
CFI_INSTRUCTION offset $r16, -16
CFI_INSTRUCTION offset $r19, -20
CFI_INSTRUCTION offset $r18, -24
CFI_INSTRUCTION offset $r21, -28
CFI_INSTRUCTION offset $r20, -32
CFI_INSTRUCTION offset $r23, -36
CFI_INSTRUCTION offset $r22, -40
CFI_INSTRUCTION offset $r25, -44
CFI_INSTRUCTION offset $r24, -48
CFI_INSTRUCTION offset $r27, -52
CFI_INSTRUCTION offset $r26, -56
BUNDLE implicit $r29, implicit killed $d9, implicit killed $d10, debug-location !15 {
S2_storerd_io $r29, 48, killed $d9, debug-location !15 :: (store (s64) into %fixed-stack.4)
S2_storerd_io $r29, 40, killed $d10, debug-location !15 :: (store (s64) into %fixed-stack.3)
}
BUNDLE implicit $r29, implicit killed $d11, implicit killed $d12, debug-location !15 {
S2_storerd_io $r29, 32, killed $d11, debug-location !15 :: (store (s64) into %fixed-stack.2)
S2_storerd_io $r29, 24, killed $d12, debug-location !15 :: (store (s64) into %fixed-stack.1)
}
BUNDLE implicit-def $r0, implicit $r29, implicit killed $d13, implicit $gp, debug-location !15 {
S2_storerd_io $r29, 16, killed $d13, debug-location !15 :: (store (s64) into %fixed-stack.0)
renamable $r0 = L2_loadrigp @ga, implicit $gp, debug-location !15 :: (dereferenceable load (s32) from @ga)
}
BUNDLE implicit-def $r0, implicit $r29, implicit killed $r0, implicit $gp, debug-location !16 {
S2_storeri_io $r29, 12, killed renamable $r0, debug-location !16 :: (store (s32) into %stack.0)
renamable $r0 = L2_loadrigp @gb, implicit $gp, debug-location !16 :: (dereferenceable load (s32) from @gb)
}
BUNDLE implicit-def $r0, implicit $r29, implicit killed $r0, implicit killed $gp, debug-location !17 {
S2_storeri_io $r29, 8, killed renamable $r0, debug-location !17 :: (store (s32) into %stack.1)
renamable $r0 = L2_loadrigp @gc, implicit killed $gp, debug-location !17 :: (dereferenceable load (s32) from @gc)
}
S2_storeri_io $r29, 4, killed renamable $r0, debug-location !18 :: (store (s32) into %stack.2)
INLINEASM &"", 1, 12, implicit-def dead early-clobber $r0, 12, implicit-def dead early-clobber $r1, 12, implicit-def dead early-clobber $r2, 12, implicit-def dead early-clobber $r3, 12, implicit-def dead early-clobber $r4, 12, implicit-def dead early-clobber $r5, 12, implicit-def dead early-clobber $r6, 12, implicit-def dead early-clobber $r7, 12, implicit-def dead early-clobber $r8, 12, implicit-def dead early-clobber $r9, 12, implicit-def dead early-clobber $r10, 12, implicit-def dead early-clobber $r11, 12, implicit-def dead early-clobber $r12, 12, implicit-def dead early-clobber $r13, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15, 12, implicit-def dead early-clobber $r16, 12, implicit-def dead early-clobber $r17, 12, implicit-def dead early-clobber $r18, 12, implicit-def dead early-clobber $r19, 12, implicit-def dead early-clobber $r20, 12, implicit-def dead early-clobber $r21, 12, implicit-def dead early-clobber $r22, 12, implicit-def dead early-clobber $r23, 12, implicit-def dead early-clobber $r24, 12, implicit-def dead early-clobber $r25, 12, implicit-def dead early-clobber $r26, 12, implicit-def dead early-clobber $r27, 12, implicit-def dead early-clobber $r28, !19, debug-location !18
BUNDLE implicit-def $r0, implicit-def $r1, implicit $r29, debug-location !20 {
$r0 = L2_loadri_io $r29, 12, debug-location !20 :: (load (s32) from %stack.0)
$r1 = L2_loadri_io $r29, 8, debug-location !20 :: (load (s32) from %stack.1)
}
BUNDLE implicit-def dead $r2, implicit-def dead $pc, implicit-def dead $r31, implicit-def $r29, implicit $r29, implicit killed $r0, implicit killed $r1, debug-location !20 {
$r2 = L2_loadri_io $r29, 4, debug-location !20 :: (load (s32) from %stack.2)
J2_call @callee, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit $r29, implicit killed $r0, implicit killed $r1, implicit internal killed $r2, implicit-def $r29, debug-location !20
}
BUNDLE implicit-def $d8, implicit-def $r16, implicit-def $r17, implicit-def $d9, implicit-def $r18, implicit-def $r19, implicit $r29, debug-location !21 {
$d8 = L2_loadrd_io $r29, 56, debug-location !21 :: (load (s64) from %fixed-stack.5)
$d9 = L2_loadrd_io $r29, 48, debug-location !21 :: (load (s64) from %fixed-stack.4)
}
BUNDLE implicit-def $d10, implicit-def $r20, implicit-def $r21, implicit-def $d11, implicit-def $r22, implicit-def $r23, implicit $r29, debug-location !21 {
$d10 = L2_loadrd_io $r29, 40, debug-location !21 :: (load (s64) from %fixed-stack.3)
$d11 = L2_loadrd_io $r29, 32, debug-location !21 :: (load (s64) from %fixed-stack.2)
}
BUNDLE implicit-def $d12, implicit-def $r24, implicit-def $r25, implicit-def $d13, implicit-def $r26, implicit-def $r27, implicit killed $r29, debug-location !21 {
$d12 = L2_loadrd_io $r29, 24, debug-location !21 :: (load (s64) from %fixed-stack.1)
$d13 = L2_loadrd_io killed $r29, 16, debug-location !21 :: (load (s64) from %fixed-stack.0)
}
$d15 = L4_return killed $r30, implicit-def $pc, implicit-def $r29, implicit killed $framekey, implicit-def dead $pc, implicit $d8, implicit $d9, implicit $d10, implicit $d11, implicit $d12, implicit $d13, debug-location !21
...
# Verify that call site entries are emitted for all three parameters.
# Previously the code that's looking for instructions to describe parameters
# with would stop when reaching the bundle header for the bundled call,
# resulting in $r0 and $r1 not being described.
#
# Please note that at the time of creating this test the Hexagon target did not
# support call site information, so the "callSites" array has been manually
# added.
# CHECK: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT: DW_AT_location (DW_OP_reg2 R2)
# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg29 R29+4, DW_OP_deref_size 0x4)
# CHECK: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT: DW_AT_location (DW_OP_reg1 R1)
# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg29 R29+8, DW_OP_deref_size 0x4)
# CHECK: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT: DW_AT_location (DW_OP_reg0 R0)
# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg29 R29+12, DW_OP_deref_size 0x4)