ARM: Default to Swift when compiling for iOS 6 or later.

[oota-llvm.git] / test / CodeGen / ARM / sub-cmp-peephole.ll

diff --git a/test/CodeGen/ARM/sub-cmp-peephole.ll b/test/CodeGen/ARM/sub-cmp-peephole.ll
index c46c891603d4777e542c65f568baa89bb98a80b3..1b411e3af1cd7b09e043fe204048099f097af3c9 100644 (file)
--- a/test/CodeGen/ARM/sub-cmp-peephole.ll
+++ b/test/CodeGen/ARM/sub-cmp-peephole.ll
@@ -2,7 +2,7 @@
 
 define i32 @f(i32 %a, i32 %b) nounwind ssp {
 entry:
-; CHECK: f:
+; CHECK-LABEL: f:
 ; CHECK: subs
 ; CHECK-NOT: cmp
   %cmp = icmp sgt i32 %a, %b
@@ -13,7 +13,7 @@ entry:
 
 define i32 @g(i32 %a, i32 %b) nounwind ssp {
 entry:
-; CHECK: g:
+; CHECK-LABEL: g:
 ; CHECK: subs
 ; CHECK-NOT: cmp
   %cmp = icmp slt i32 %a, %b
@@ -24,7 +24,7 @@ entry:
 
 define i32 @h(i32 %a, i32 %b) nounwind ssp {
 entry:
-; CHECK: h:
+; CHECK-LABEL: h:
 ; CHECK: subs
 ; CHECK-NOT: cmp
   %cmp = icmp sgt i32 %a, 3
@@ -36,7 +36,7 @@ entry:
 ; rdar://11725965
 define i32 @i(i32 %a, i32 %b) nounwind readnone ssp {
 entry:
-; CHECK: i:
+; CHECK-LABEL: i:
 ; CHECK: subs
 ; CHECK-NOT: cmp
   %cmp = icmp ult i32 %a, %b
@@ -44,3 +44,43 @@ entry:
   %sub. = select i1 %cmp, i32 %sub, i32 0
   ret i32 %sub.
 }
+; If CPSR is live-out, we can't remove cmp if there exists
+; a swapped sub.
+define i32 @j(i32 %a, i32 %b) nounwind {
+entry:
+; CHECK-LABEL: j:
+; CHECK: sub
+; CHECK: cmp
+  %cmp = icmp eq i32 %b, %a
+  %sub = sub nsw i32 %a, %b
+  br i1 %cmp, label %if.then, label %if.else
+
+if.then:
+  %cmp2 = icmp sgt i32 %b, %a
+  %sel = select i1 %cmp2, i32 %sub, i32 %a
+  ret i32 %sel
+
+if.else:
+  ret i32 %sub
+}
+
+; If the sub/rsb instruction is predicated, we can't use the flags.
+; <rdar://problem/12263428>
+; Test case from MultiSource/Benchmarks/Ptrdist/bc/number.s
+; CHECK: bc_raise
+; CHECK: rsbeq
+; CHECK: cmp
+define i32 @bc_raise() nounwind ssp {
+entry:
+  %val.2.i = select i1 undef, i32 0, i32 undef
+  %sub.i = sub nsw i32 0, %val.2.i
+  %retval.0.i = select i1 undef, i32 %val.2.i, i32 %sub.i
+  %cmp1 = icmp eq i32 %retval.0.i, 0
+  br i1 %cmp1, label %land.lhs.true, label %if.end11
+
+land.lhs.true:                                    ; preds = %num2long.exit
+  ret i32 17
+
+if.end11:                                         ; preds = %num2long.exit
+  ret i32 23
+}