-; RUN: llc < %s -ifcvt-limit=0 -march=thumb -mattr=+thumb2 | FileCheck %s
-; RUN: llc < %s -ifcvt-limit=0 -march=thumb -mattr=+thumb2 | not grep it
+; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s
+; RUN: llc < %s -march=thumb -mattr=+thumb2 | not grep it
; If-conversion defeats the purpose of this test, which is to check CBZ
-; generation, so turn it off.
+; generation, so use memory barrier instruction to make sure it doesn't
+; happen and we get actual branches.
define i32 @t1(i32 %a, i32 %b, i32 %c) {
; CHECK: t1:
br i1 %tmp2, label %cond_false, label %cond_true
cond_true:
+ call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 false)
%tmp5 = add i32 %b, 1
%tmp6 = and i32 %tmp5, %c
ret i32 %tmp6
cond_false:
+ call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 false)
%tmp7 = add i32 %b, -1
%tmp8 = xor i32 %tmp7, %c
ret i32 %tmp8
}
+
+declare void @llvm.memory.barrier(i1, i1, i1, i1, i1) nounwind
-; RUN: llc < %s -ifcvt-limit=0 -mtriple=thumbv7-apple-darwin -mattr=+thumb2 | FileCheck %s
+; RUN: llc < %s -mtriple=thumbv7-apple-darwin -mattr=+thumb2 | FileCheck %s
; If-conversion defeats the purpose of this test, which is to check conditional
-; branch generation, so turn it off.
+; branch generation, so use memory barrier instruction to make sure it doesn't
+; happen and we get actual branches.
define i32 @f1(i32 %a, i32 %b, i32* %v) {
entry:
br i1 %tmp, label %cond_true, label %return
cond_true: ; preds = %entry
+ call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 false)
store i32 0, i32* %v
ret i32 0
return: ; preds = %entry
+ call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 false)
ret i32 1
}
br i1 %tmp, label %cond_true, label %return
cond_true: ; preds = %entry
+ call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 false)
store i32 0, i32* %v
ret i32 0
return: ; preds = %entry
+ call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 false)
ret i32 1
}
br i1 %tmp, label %cond_true, label %return
cond_true: ; preds = %entry
+ call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 false)
store i32 0, i32* %v
ret i32 0
return: ; preds = %entry
+ call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 false)
ret i32 1
}
br i1 %tmp, label %return, label %cond_true
cond_true: ; preds = %entry
+ call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 false)
store i32 0, i32* %v
ret i32 0
return: ; preds = %entry
+ call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 false)
ret i32 1
}
+
+declare void @llvm.memory.barrier(i1, i1, i1, i1, i1) nounwind