Disable wrapping llvm-xray YAML output

Summary:
The YAML output produced by llvm-xray is supposed to be wrapped at the
arbitrary default of 70 columns set by `yaml:Output`.  Unfortunately,
the wrapping is rather unpredictable, and can easily go past the set
number of columns, depending on the execution environment.

To make the YAML output environment-independent, disable wrapping
instead.

Reviewers: dberris

Reviewed By: dberris

Subscribers: fhahn, llvm-commits

Differential Revision: https://reviews.llvm.org/D29962

llvm-svn: 295116
diff --git a/llvm/test/tools/llvm-xray/X86/extract-instrmap.ll b/llvm/test/tools/llvm-xray/X86/extract-instrmap.ll
index 8155d57..7447aec 100644
--- a/llvm/test/tools/llvm-xray/X86/extract-instrmap.ll
+++ b/llvm/test/tools/llvm-xray/X86/extract-instrmap.ll
@@ -4,12 +4,8 @@
 ; RUN: llvm-xray extract %S/Inputs/elf64-example.bin | FileCheck %s
 
 ; CHECK:      ---
-; CHECK-NEXT: - { id: 1, address: 0x000000000041C900, function: 0x000000000041C900, kind: function-enter,
-; CHECK-NEXT:     always-instrument: true }
-; CHECK-NEXT: - { id: 1, address: 0x000000000041C912, function: 0x000000000041C900, kind: function-exit,
-; CHECK-NEXT:     always-instrument: true }
-; CHECK-NEXT: - { id: 2, address: 0x000000000041C930, function: 0x000000000041C930, kind: function-enter,
-; CHECK-NEXT:    always-instrument: true }
-; CHECK-NEXT: - { id: 2, address: 0x000000000041C946, function: 0x000000000041C930, kind: function-exit,
-; CHECK-NEXT:     always-instrument: true }
+; CHECK-NEXT: - { id: 1, address: 0x000000000041C900, function: 0x000000000041C900, kind: function-enter, always-instrument: true }
+; CHECK-NEXT: - { id: 1, address: 0x000000000041C912, function: 0x000000000041C900, kind: function-exit, always-instrument: true }
+; CHECK-NEXT: - { id: 2, address: 0x000000000041C930, function: 0x000000000041C930, kind: function-enter, always-instrument: true }
+; CHECK-NEXT: - { id: 2, address: 0x000000000041C946, function: 0x000000000041C930, kind: function-exit, always-instrument: true }
 ; CHECK-NEXT: ...