[MIRPrinter] Print raw branch probabilities as expected by MIRParser

Fixes PR28751.

Reviewers: MatzeB, qcolombet

Subscribers: mcrosier, llvm-commits

Differential Revision: https://reviews.llvm.org/D26775

llvm-svn: 287368

1 files changed, 26 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/MIR/Generic/branch-probabilities.ll b/llvm/test/CodeGen/MIR/Generic/branch-probabilities.ll
new file mode 100644
index 00000000000..6a9e70ec47f
--- /dev/null
+++ b/llvm/test/CodeGen/MIR/Generic/branch-probabilities.ll
@@ -0,0 +1,26 @@
+; RUN: llc -stop-after machine-sink %s -o %t.mir
+; RUN: FileCheck %s < %t.mir
+; RUN: llc %t.mir -run-pass machine-sink
+; Check that branch probabilities are printed in a format that can then be parsed.
+
+declare void @foo()
+declare void @bar()
+
+define void @test(i1 %c) {
+; CHECK-LABEL: name: test
+entry:
+        br i1 %c, label %then, label %else
+
+then:
+        call void @foo()
+        br label %end
+; CHECK: successors: %{{[a-z0-9\-\.]+}}({{0x[0-9a-f]+}}), %{{[a-z0-9\-\.]+}}({{0x[0-9a-f]+}})
+
+else:
+        call void @bar()
+        br label %end
+; CHECK: successors: %{{[a-z0-9\-\.]+}}({{0x[0-9a-f]+}})
+
+end:
+        ret void
+}