[XRay] Make xray_instr_map compatible with Mach-O

The `__DATA,xray_instr_map` section has label differences like
`.quad Lxray_sled_0-Ltmp0` that is represented as a pair of UNSIGNED and SUBTRACTOR relocations.

LLVM integrated assembler attempts to rewrite A-B into A-B'+offset where B' can
be included in the symbol table. B' is called an atom and should be a
non-temporary symbol in the same section. However, since `xray_instr_map` does
not define a non-temporary symbol, the SUBTRACTOR relocation will have no
associated symbol, and its `r_extern` value will be 0. Therefore, we will see
linker errors like:

    error: SUBTRACTOR relocation must be extern at offset 0 of __DATA,xray_instr_map in a.o

To fix this issue, we need to define a non-temporary symbol in the section. We
can accomplish this by renaming `Lxray_sleds_start0` to `lxray_sleds_start0`
("L" to "l").

`lxray_sleds_start0` serves as the atom for this dead-strippable subsection.
With the `S_ATTR_LIVE_SUPPORT` attribute, `ld -dead_strip` will retain
subsections that reference live functions.

Special thanks to Oleksii Lozovskyi for reporting the issue and providing
initial analysis.

Differential Revision: https://reviews.llvm.org/D153239

diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index dedf8f4..872e53f 100644 (file)
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -4033,7 +4033,8 @@ void AsmPrinter::emitXRayTable() {
   // per-function, we are able to create an index entry that will represent the
   // range of sleds associated with a function.
   auto &Ctx = OutContext;
-  MCSymbol *SledsStart = OutContext.createTempSymbol("xray_sleds_start", true);
+  MCSymbol *SledsStart =
+      OutContext.createLinkerPrivateSymbol("xray_sleds_start");
   OutStreamer->switchSection(InstMap);
   OutStreamer->emitLabel(SledsStart);
   for (const auto &Sled : Sleds) {

diff --git a/llvm/test/CodeGen/AArch64/xray-attribute-instrumentation.ll b/llvm/test/CodeGen/AArch64/xray-attribute-instrumentation.ll
index f196a5d..a101789 100644 (file)
--- a/llvm/test/CodeGen/AArch64/xray-attribute-instrumentation.ll
+++ b/llvm/test/CodeGen/AArch64/xray-attribute-instrumentation.ll
@@ -22,7 +22,7 @@ define i32 @foo() nounwind noinline uwtable "function-instrument"="xray-always"
 ; CHECK-LINUX-LABEL: Lxray_sleds_end0:
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start0:
+; CHECK-MACOS-LABEL: lxray_sleds_start0:
 ; CHECK-MACOS:         .quad Lxray_sled_0
 ; CHECK-MACOS:         .quad Lxray_sled_1
 ; CHECK-MACOS-LABEL: Lxray_sleds_end0:
@@ -48,7 +48,7 @@ define i32 @bar() nounwind noinline uwtable "function-instrument"="xray-never" "
 ; CHECK-LINUX-LABEL: Lxray_sleds_end1:
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start1:
+; CHECK-MACOS-LABEL: lxray_sleds_start1:
 ; CHECK-MACOS:         .quad Lxray_sled_2
 ; CHECK-MACOS:         .quad Lxray_sled_3
 ; CHECK-MACOS-LABEL: Lxray_sleds_end1:
@@ -74,7 +74,7 @@ define i32 @instrumented() nounwind noinline uwtable "xray-instruction-threshold
 ; CHECK-LINUX-LABEL: Lxray_sleds_end2:
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start2:
+; CHECK-MACOS-LABEL: lxray_sleds_start2:
 ; CHECK-MACOS:         .quad Lxray_sled_4
 ; CHECK-MACOS:         .quad Lxray_sled_5
 ; CHECK-MACOS-LABEL: Lxray_sleds_end2:

diff --git a/llvm/test/CodeGen/AArch64/xray-omit-function-index.ll b/llvm/test/CodeGen/AArch64/xray-omit-function-index.ll
index 36faabe..54a45e0 100644 (file)
--- a/llvm/test/CodeGen/AArch64/xray-omit-function-index.ll
+++ b/llvm/test/CodeGen/AArch64/xray-omit-function-index.ll
@@ -32,7 +32,7 @@ define i32 @foo() nounwind noinline uwtable "function-instrument"="xray-always"
 ; CHECK-LINUX-LABEL: Lxray_sleds_end0:
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start0:
+; CHECK-MACOS-LABEL: lxray_sleds_start0:
 ; CHECK-MACOS:         .quad Lxray_sled_0
 ; CHECK-MACOS:         .quad Lxray_sled_1
 ; CHECK-MACOS-LABEL: Lxray_sleds_end0:

diff --git a/llvm/test/CodeGen/AArch64/xray-partial-instrumentation-skip-entry.ll b/llvm/test/CodeGen/AArch64/xray-partial-instrumentation-skip-entry.ll
index ed2d488..97717d6 100644 (file)
--- a/llvm/test/CodeGen/AArch64/xray-partial-instrumentation-skip-entry.ll
+++ b/llvm/test/CodeGen/AArch64/xray-partial-instrumentation-skip-entry.ll
@@ -23,6 +23,6 @@ define i32 @foo() nounwind noinline uwtable "function-instrument"="xray-always"
 ; CHECK-LINUX-LABEL: Lxray_sleds_end0:
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start0:
+; CHECK-MACOS-LABEL: lxray_sleds_start0:
 ; CHECK-MACOS:         .quad Lxray_sled_0
 ; CHECK-MACOS-LABEL: Lxray_sleds_end0:

diff --git a/llvm/test/CodeGen/AArch64/xray-partial-instrumentation-skip-exit.ll b/llvm/test/CodeGen/AArch64/xray-partial-instrumentation-skip-exit.ll
index 1908a4e..189be43 100644 (file)
--- a/llvm/test/CodeGen/AArch64/xray-partial-instrumentation-skip-exit.ll
+++ b/llvm/test/CodeGen/AArch64/xray-partial-instrumentation-skip-exit.ll
@@ -23,6 +23,6 @@ define i32 @foo() nounwind noinline uwtable "function-instrument"="xray-always"
 ; CHECK-LINUX-LABEL: Lxray_sleds_end0:
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start0:
+; CHECK-MACOS-LABEL: lxray_sleds_start0:
 ; CHECK-MACOS:         .quad Lxray_sled_0
 ; CHECK-MACOS-LABEL: Lxray_sleds_end0:

diff --git a/llvm/test/CodeGen/AArch64/xray-tail-call-sled.ll b/llvm/test/CodeGen/AArch64/xray-tail-call-sled.ll
index 0f20df2..484dca1 100644 (file)
--- a/llvm/test/CodeGen/AArch64/xray-tail-call-sled.ll
+++ b/llvm/test/CodeGen/AArch64/xray-tail-call-sled.ll
@@ -29,7 +29,7 @@ define i32 @callee() nounwind noinline uwtable "function-instrument"="xray-alway
 ; CHECK-LINUX-NEXT:    .xword 2
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start0:
+; CHECK-MACOS-LABEL: lxray_sleds_start0:
 ; CHECK-MACOS-NEXT:  [[TMP:Ltmp[0-9]+]]:
 ; CHECK-MACOS:         .quad Lxray_sled_0-[[TMP]]
 ; CHECK-MACOS:       [[TMP:Ltmp[0-9]+]]:
@@ -37,7 +37,7 @@ define i32 @callee() nounwind noinline uwtable "function-instrument"="xray-alway
 ; CHECK-MACOS-LABEL: Lxray_sleds_end0:
 ; CHECK-MACOS-LABEL: .section __DATA,xray_fn_idx,regular,live_support{{$}}
 ; CHECK-MACOS:       [[IDX:lxray_fn_idx[0-9]+]]:
-; CHECK-MACOS-NEXT:    .quad Lxray_sleds_start0-[[IDX]]
+; CHECK-MACOS-NEXT:    .quad lxray_sleds_start0-[[IDX]]
 ; CHECK-MACOS-NEXT:    .quad 2
 
 define i32 @caller() nounwind noinline uwtable "function-instrument"="xray-always" {
@@ -68,11 +68,11 @@ define i32 @caller() nounwind noinline uwtable "function-instrument"="xray-alway
 ; CHECK-LINUX-NEXT:    .xword 2
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start1:
+; CHECK-MACOS-LABEL: lxray_sleds_start1:
 ; CHECK-MACOS:         .quad Lxray_sled_2
 ; CHECK-MACOS:         .quad Lxray_sled_3
 ; CHECK-MACOS-LABEL: Lxray_sleds_end1:
 ; CHECK-MACOS-LABEL: .section __DATA,xray_fn_idx,regular,live_support{{$}}
 ; CHECK-MACOS:       [[IDX:lxray_fn_idx[0-9]+]]:
-; CHECK-MACOS-NEXT:    .quad Lxray_sleds_start1-[[IDX]]
+; CHECK-MACOS-NEXT:    .quad lxray_sleds_start1-[[IDX]]
 ; CHECK-MACOS-NEXT:    .quad 2

diff --git a/llvm/test/CodeGen/ARM/xray-armv6-attribute-instrumentation.ll b/llvm/test/CodeGen/ARM/xray-armv6-attribute-instrumentation.ll
index 0c7c8a2..425ffc3 100644 (file)
--- a/llvm/test/CodeGen/ARM/xray-armv6-attribute-instrumentation.ll
+++ b/llvm/test/CodeGen/ARM/xray-armv6-attribute-instrumentation.ll
@@ -34,10 +34,10 @@ define i32 @foo() nounwind noinline uwtable "function-instrument"="xray-always"
 ; CHECK-LINUX-NEXT:    .long 2
 
 ; CHECK-IOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-IOS-LABEL: Lxray_sleds_start0:
+; CHECK-IOS-LABEL: lxray_sleds_start0:
 ; CHECK-IOS:         .long Lxray_sled_0
 ; CHECK-IOS:         .long Lxray_sled_1
 ; CHECK-IOS-LABEL: Lxray_sleds_end0:
 ; CHECK-IOS-LABEL: .section __DATA,xray_fn_idx,regular,live_support{{$}}
-; CHECK-IOS:         .long Lxray_sleds_start0-lxray_fn_idx0
+; CHECK-IOS:         .long lxray_sleds_start0-lxray_fn_idx0
 ; CHECK-IOS-NEXT:    .long 2

diff --git a/llvm/test/CodeGen/ARM/xray-armv7-attribute-instrumentation.ll b/llvm/test/CodeGen/ARM/xray-armv7-attribute-instrumentation.ll
index 27189dd..745a856 100644 (file)
--- a/llvm/test/CodeGen/ARM/xray-armv7-attribute-instrumentation.ll
+++ b/llvm/test/CodeGen/ARM/xray-armv7-attribute-instrumentation.ll
@@ -25,11 +25,11 @@ define i32 @foo() nounwind noinline uwtable "function-instrument"="xray-always"
 ; CHECK-LINUX-NEXT:    .long 2
 
 ; CHECK-IOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-IOS-LABEL: Lxray_sleds_start0:
+; CHECK-IOS-LABEL: lxray_sleds_start0:
 ; CHECK-IOS:         .long Lxray_sled_0
 ; CHECK-IOS:         .long Lxray_sled_1
 ; CHECK-IOS-LABEL: Lxray_sleds_end0:
 ; CHECK-IOS-LABEL: .section __DATA,xray_fn_idx,regular,live_support{{$}}
 ; CHECK-IOS:       lxray_fn_idx0:
-; CHECK-IOS:         .long Lxray_sleds_start0-lxray_fn_idx0
+; CHECK-IOS:         .long lxray_sleds_start0-lxray_fn_idx0
 ; CHECK-IOS-NEXT:    .long 2

diff --git a/llvm/test/CodeGen/X86/xray-attribute-instrumentation.ll b/llvm/test/CodeGen/X86/xray-attribute-instrumentation.ll
index 0003441..9cebffc 100644 (file)
--- a/llvm/test/CodeGen/X86/xray-attribute-instrumentation.ll
+++ b/llvm/test/CodeGen/X86/xray-attribute-instrumentation.ll
@@ -25,13 +25,13 @@ define i32 @foo() nounwind noinline uwtable "function-instrument"="xray-always"
 ; CHECK-LINUX-NEXT:    .quad 2
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start0:
+; CHECK-MACOS-LABEL: lxray_sleds_start0:
 ; CHECK-MACOS:         .quad Lxray_sled_0
 ; CHECK-MACOS:         .quad Lxray_sled_1
 ; CHECK-MACOS-LABEL: Lxray_sleds_end0:
 ; CHECK-MACOS-LABEL: .section __DATA,xray_fn_idx,regular,live_support{{$}}
 ; CHECK-MACOS:       [[IDX:lxray_fn_idx[0-9]+]]:
-; CHECK-MACOS-NEXT:    .quad Lxray_sleds_start0-[[IDX]]
+; CHECK-MACOS-NEXT:    .quad lxray_sleds_start0-[[IDX]]
 ; CHECK-MACOS-NEXT:    .quad 2
 
 
@@ -74,7 +74,7 @@ NotEqual:
 ; CHECK-LINUX-NEXT:    .quad 3
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start1:
+; CHECK-MACOS-LABEL: lxray_sleds_start1:
 ; CHECK-MACOS:       [[TMP:Ltmp[0-9]+]]:
 ; CHECK-MACOS-NEXT:    .quad Lxray_sled_2-[[TMP]]
 ; CHECK-MACOS:       [[TMP:Ltmp[0-9]+]]:
@@ -84,5 +84,5 @@ NotEqual:
 ; CHECK-MACOS-LABEL: Lxray_sleds_end1:
 ; CHECK-MACOS-LABEL: .section __DATA,xray_fn_idx,regular,live_support{{$}}
 ; CHECK-MACOS:       [[IDX:lxray_fn_idx[0-9]+]]:
-; CHECK-MACOS-NEXT:    .quad Lxray_sleds_start1-[[IDX]]
+; CHECK-MACOS-NEXT:    .quad lxray_sleds_start1-[[IDX]]
 ; CHECK-MACOS-NEXT:    .quad 3

diff --git a/llvm/test/CodeGen/X86/xray-log-args.ll b/llvm/test/CodeGen/X86/xray-log-args.ll
index 2212c3f..240a639 100644 (file)
--- a/llvm/test/CodeGen/X86/xray-log-args.ll
+++ b/llvm/test/CodeGen/X86/xray-log-args.ll
@@ -25,7 +25,7 @@ define i32 @callee(i32 %arg) nounwind noinline uwtable "function-instrument"="xr
 ; CHECK-LINUX-NEXT:    .byte 0x02
 ; CHECK-LINUX:         .zero 13
 
-; CHECK-MACOS-LABEL: Lxray_sleds_start0:
+; CHECK-MACOS-LABEL: lxray_sleds_start0:
 ; CHECK-MACOS-NEXT:  [[TMP:Ltmp[0-9]+]]:
 ; CHECK-MACOS-NEXT:    .quad Lxray_sled_0-[[TMP]]
 ; CHECK-MACOS-NEXT:    .quad Lfunc_begin0-([[TMP]]+8)
@@ -62,7 +62,7 @@ define i32 @caller(i32 %arg) nounwind noinline uwtable "function-instrument"="xr
 ; CHECK-LINUX-NEXT:    .byte 0x02
 ; CHECK-LINUX:         .zero 13
 
-; CHECK-MACOS-LABEL: Lxray_sleds_start1:
+; CHECK-MACOS-LABEL: lxray_sleds_start1:
 ; CHECK-MACOS-NEXT:  [[TMP:Ltmp[0-9]+]]:
 ; CHECK-MACOS-NEXT:    .quad Lxray_sled_2-[[TMP]]
 ; CHECK-MACOS-NEXT:    .quad Lfunc_begin1-([[TMP]]+8)

diff --git a/llvm/test/CodeGen/X86/xray-partial-instrumentation-skip-entry.ll b/llvm/test/CodeGen/X86/xray-partial-instrumentation-skip-entry.ll
index f345611..f58d743 100644 (file)
--- a/llvm/test/CodeGen/X86/xray-partial-instrumentation-skip-entry.ll
+++ b/llvm/test/CodeGen/X86/xray-partial-instrumentation-skip-entry.ll
@@ -21,12 +21,12 @@ define i32 @foo() nounwind noinline uwtable "function-instrument"="xray-always"
 ; CHECK-LINUX-NEXT:    .quad 1
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start0:
+; CHECK-MACOS-LABEL: lxray_sleds_start0:
 ; CHECK-MACOS:         .quad Lxray_sled_0
 ; CHECK-MACOS-LABEL: Lxray_sleds_end0:
 ; CHECK-MACOS-LABEL: .section __DATA,xray_fn_idx,regular,live_support{{$}}
 ; CHECK-MACOS:       [[IDX:lxray_fn_idx[0-9]+]]:
-; CHECK-MACOS-NEXT:    .quad Lxray_sleds_start0-[[IDX]]
+; CHECK-MACOS-NEXT:    .quad lxray_sleds_start0-[[IDX]]
 ; CHECK-MACOS-NEXT:    .quad 1
 
 
@@ -62,11 +62,11 @@ NotEqual:
 ; CHECK-LINUX-NEXT:    .quad 2
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start1:
+; CHECK-MACOS-LABEL: lxray_sleds_start1:
 ; CHECK-MACOS:         .quad Lxray_sled_1
 ; CHECK-MACOS:         .quad Lxray_sled_2
 ; CHECK-MACOS-LABEL: Lxray_sleds_end1:
 ; CHECK-MACOS-LABEL: .section __DATA,xray_fn_idx,regular,live_support{{$}}
 ; CHECK-MACOS:       [[IDX:lxray_fn_idx[0-9]+]]:
-; CHECK-MACOS-NEXT:    .quad Lxray_sleds_start1-[[IDX]]
+; CHECK-MACOS-NEXT:    .quad lxray_sleds_start1-[[IDX]]
 ; CHECK-MACOS-NEXT:    .quad 2

diff --git a/llvm/test/CodeGen/X86/xray-partial-instrumentation-skip-exit.ll b/llvm/test/CodeGen/X86/xray-partial-instrumentation-skip-exit.ll
index fa3b97e..3d631d7 100644 (file)
--- a/llvm/test/CodeGen/X86/xray-partial-instrumentation-skip-exit.ll
+++ b/llvm/test/CodeGen/X86/xray-partial-instrumentation-skip-exit.ll
@@ -18,15 +18,17 @@ define i32 @foo() nounwind noinline uwtable "function-instrument"="xray-always"
 ; CHECK-LINUX:         .quad .Lxray_sled_0
 ; CHECK-LINUX-LABEL: .Lxray_sleds_end0:
 ; CHECK-LINUX-LABEL: .section xray_fn_idx,"awo",@progbits,foo{{$}}
-; CHECK-LINUX:         .quad .Lxray_sleds_start0
+; CHECK-LINUX:       [[IDX:.lxray_fn_idx[0-9]+]]:
+; CHECK-LINUX:         .quad .Lxray_sleds_start0-[[IDX]]
 ; CHECK-LINUX-NEXT:    .quad .Lxray_sleds_end0
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start0:
+; CHECK-MACOS-LABEL: lxray_sleds_start0:
 ; CHECK-MACOS:         .quad Lxray_sled_0
 ; CHECK-MACOS-LABEL: Lxray_sleds_end0:
 ; CHECK-MACOS-LABEL: .section __DATA,xray_fn_idx,regular,live_support{{$}}
-; CHECK-MACOS:         .quad Lxray_sleds_start0
+; CHECK-MACOS:       [[IDX:lxray_fn_idx[0-9]+]]:
+; CHECK-MACOS:         .quad lxray_sleds_start0-[[IDX]]
 ; CHECK-MACOS-NEXT:    .quad Lxray_sleds_end0
 
 
@@ -57,13 +59,13 @@ NotEqual:
 ; CHECK-LINUX-LABEL: .section xray_fn_idx,"awo",@progbits,bar{[$}}
 ; CHECK-LINUX:       .Lxray_fn_idx0:
 ; CHECK-LINUX-NEXT:    .quad .Lxray_sleds_start1-.Lxray_fn_idx0
-; CHECK-LINUX-NEXT:    .quad .Lxray_sleds_end1
+; CHECK-LINUX-NEXT:    .quad 2
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start1:
+; CHECK-MACOS-LABEL: lxray_sleds_start1:
 ; CHECK-MACOS:         .quad Lxray_sled_1
 ; CHECK-MACOS-LABEL: Lxray_sleds_end1:
 ; CHECK-MACOS-LABEL: .section __DATA,xray_fn_idx,regular,live_support{{$}}
 ; CHECK-MACOS:       Lxray_fn_idx0:
 ; CHECK-MACOS-NEXT:    .quad Lxray_sleds_start1-Lxray_fn_idx0
-; CHECK-MACOS-NEXT:    .quad Lxray_sleds_end1
+; CHECK-MACOS-NEXT:    .quad 2

diff --git a/llvm/test/CodeGen/X86/xray-tail-call-sled.ll b/llvm/test/CodeGen/X86/xray-tail-call-sled.ll
index d1f8552..4d0c359 100644 (file)
--- a/llvm/test/CodeGen/X86/xray-tail-call-sled.ll
+++ b/llvm/test/CodeGen/X86/xray-tail-call-sled.ll
@@ -24,13 +24,13 @@ define dso_local i32 @callee() nounwind noinline uwtable "function-instrument"="
 ; CHECK-LINUX-NEXT:    .quad 2
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start0:
+; CHECK-MACOS-LABEL: lxray_sleds_start0:
 ; CHECK-MACOS:         .quad Lxray_sled_0
 ; CHECK-MACOS:         .quad Lxray_sled_1
 ; CHECK-MACOS-LABEL: Lxray_sleds_end0:
 ; CHECK-MACOS-LABEL: .section __DATA,xray_fn_idx,regular,live_support{{$}}
 ; CHECK-MACOS:       [[IDX:lxray_fn_idx[0-9]+]]:
-; CHECK-MACOS-NEXT:    .quad Lxray_sleds_start0-[[IDX]]
+; CHECK-MACOS-NEXT:    .quad lxray_sleds_start0-[[IDX]]
 ; CHECK-MACOS-NEXT:    .quad 2
 
 define dso_local i32 @caller() nounwind noinline uwtable "function-instrument"="xray-always" {
@@ -58,11 +58,11 @@ define dso_local i32 @caller() nounwind noinline uwtable "function-instrument"="
 ; CHECK-LINUX-NEXT:    .quad 2
 
 ; CHECK-MACOS-LABEL: .section __DATA,xray_instr_map,regular,live_support{{$}}
-; CHECK-MACOS-LABEL: Lxray_sleds_start1:
+; CHECK-MACOS-LABEL: lxray_sleds_start1:
 ; CHECK-MACOS:         .quad Lxray_sled_2
 ; CHECK-MACOS:         .quad Lxray_sled_3
 ; CHECK-MACOS-LABEL: Lxray_sleds_end1:
 ; CHECK-MACOS-LABEL: .section __DATA,xray_fn_idx,regular,live_support{{$}}
 ; CHECK-MACOS:       [[IDX:lxray_fn_idx[0-9]+]]:
-; CHECK-MACOS-NEXT:    .quad Lxray_sleds_start1-[[IDX]]
+; CHECK-MACOS-NEXT:    .quad lxray_sleds_start1-[[IDX]]
 ; CHECK-MACOS-NEXT:    .quad 2