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Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/testl-commute.ll | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/test/CodeGen/X86/testl-commute.ll b/test/CodeGen/X86/testl-commute.ll new file mode 100644 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() |