From d9bf71fdd26475f4629ef8861debfd2c621a372f Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor@mac.com>
Date: Mon, 9 Jul 2012 20:31:12 +0000
Subject: Teach the DAG combiner to turn sitofp/uitofp from i1 into a
 conditional move, since there are only two possible values. Previously, this
 would become an integer extension operation, followed by a real
 integer->float conversion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159957 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/ARM/select.ll | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'test')

diff --git a/test/CodeGen/ARM/select.ll b/test/CodeGen/ARM/select.ll
index 3e07da8..418d4f3 100644
--- a/test/CodeGen/ARM/select.ll
+++ b/test/CodeGen/ARM/select.ll
@@ -113,3 +113,29 @@ entry:
   call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, [2 x i32], i32, float)*)(i8* undef, i8* undef, [2 x i32] %tmp493, i32 0, float 1.000000e+00) optsize
   ret void
 }
+
+; CHECK: f10
+define float @f10(i32 %a, i32 %b) nounwind uwtable readnone ssp {
+; CHECK-NOT: floatsisf
+  %1 = icmp eq i32 %a, %b
+  %2 = zext i1 %1 to i32
+  %3 = sitofp i32 %2 to float
+  ret float %3
+}
+
+; CHECK: f11
+define float @f11(i32 %a, i32 %b) nounwind uwtable readnone ssp {
+; CHECK-NOT: floatsisf
+  %1 = icmp eq i32 %a, %b
+  %2 = sitofp i1 %1 to float
+  ret float %2
+}
+
+; CHECK: f12
+define float @f12(i32 %a, i32 %b) nounwind uwtable readnone ssp {
+; CHECK-NOT: floatunsisf
+  %1 = icmp eq i32 %a, %b
+  %2 = uitofp i1 %1 to float
+  ret float %2
+}
+
-- 
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