A branch predicated on a constant can just FastEmit an unconditional branch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143086 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ARM/fast-isel-br-const.ll b/test/CodeGen/ARM/fast-isel-br-const.ll
new file mode 100644
index 0000000..b7acfaa
--- /dev/null
+++ b/test/CodeGen/ARM/fast-isel-br-const.ll
@@ -0,0 +1,47 @@
+; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=armv7-apple-darwin | FileCheck %s --check-prefix=ARM
+; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-darwin | FileCheck %s --check-prefix=THUMB
+
+define i32 @t1(i32 %a, i32 %b) nounwind uwtable ssp {
+entry:
+; THUMB: t1:
+; ARM: t1:
+
+ br i1 1, label %if.then, label %if.else
+; THUMB-NOT: b LBB0_1
+; ARM-NOT: b LBB0_1
+
+if.then: ; preds = %entry
+ call void @foo1()
+ br label %if.end7
+
+if.else: ; preds = %entry
+ br i1 0, label %if.then2, label %if.else3
+; THUMB: b LBB0_4
+; ARM: b LBB0_4
+
+if.then2: ; preds = %if.else
+ call void @foo2()
+ br label %if.end6
+
+if.else3: ; preds = %if.else
+ br i1 1, label %if.then5, label %if.end
+; THUMB-NOT: b LBB0_5
+; ARM-NOT: b LBB0_5
+
+if.then5: ; preds = %if.else3
+ call void @foo1()
+ br label %if.end
+
+if.end: ; preds = %if.then5, %if.else3
+ br label %if.end6
+
+if.end6: ; preds = %if.end, %if.then2
+ br label %if.end7
+
+if.end7: ; preds = %if.end6, %if.then
+ ret i32 0
+}
+
+declare void @foo1()
+
+declare void @foo2()