add a testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61845 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/testl-commute.ll b/test/CodeGen/X86/testl-commute.ll
new file mode 100644 (file)
index 0000000..dbbef0a
--- /dev/null
+++ b/test/CodeGen/X86/testl-commute.ll
@@ -0,0 +1,56 @@
+; RUN: llvm-as < %s | llc | grep {testl.*\(%r.i\), %} | count 3
+; rdar://5671654
+; The loads should fold into the testl instructions, no matter how
+; the inputs are commuted.
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
+target triple = "x86_64-apple-darwin7"
+
+define i32 @test(i32* %P, i32* %G) nounwind {
+entry:
+       %0 = load i32* %P, align 4              ; <i32> [#uses=3]
+       %1 = load i32* %G, align 4              ; <i32> [#uses=1]
+       %2 = and i32 %1, %0             ; <i32> [#uses=1]
+       %3 = icmp eq i32 %2, 0          ; <i1> [#uses=1]
+       br i1 %3, label %bb1, label %bb
+
+bb:            ; preds = %entry
+       %4 = tail call i32 @bar() nounwind              ; <i32> [#uses=0]
+       ret i32 %0
+
+bb1:           ; preds = %entry
+       ret i32 %0
+}
+
+define i32 @test2(i32* %P, i32* %G) nounwind {
+entry:
+       %0 = load i32* %P, align 4              ; <i32> [#uses=3]
+       %1 = load i32* %G, align 4              ; <i32> [#uses=1]
+       %2 = and i32 %0, %1             ; <i32> [#uses=1]
+       %3 = icmp eq i32 %2, 0          ; <i1> [#uses=1]
+       br i1 %3, label %bb1, label %bb
+
+bb:            ; preds = %entry
+       %4 = tail call i32 @bar() nounwind              ; <i32> [#uses=0]
+       ret i32 %0
+
+bb1:           ; preds = %entry
+       ret i32 %0
+}
+define i32 @test3(i32* %P, i32* %G) nounwind {
+entry:
+       %0 = load i32* %P, align 4              ; <i32> [#uses=3]
+       %1 = load i32* %G, align 4              ; <i32> [#uses=1]
+       %2 = and i32 %0, %1             ; <i32> [#uses=1]
+       %3 = icmp eq i32 %2, 0          ; <i1> [#uses=1]
+       br i1 %3, label %bb1, label %bb
+
+bb:            ; preds = %entry
+       %4 = tail call i32 @bar() nounwind              ; <i32> [#uses=0]
+       ret i32 %1
+
+bb1:           ; preds = %entry
+       ret i32 %1
+}
+
+declare i32 @bar()