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Diffstat (limited to 'test/CodeGen/X86/test-nofold.ll')
-rw-r--r-- | test/CodeGen/X86/test-nofold.ll | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/test/CodeGen/X86/test-nofold.ll b/test/CodeGen/X86/test-nofold.ll new file mode 100644 index 0000000000..a24a9a0940 --- /dev/null +++ b/test/CodeGen/X86/test-nofold.ll @@ -0,0 +1,29 @@ +; RUN: llvm-as < %s | llc -march=x86 -mcpu=yonah | grep {testl.*%e.x.*%e.x} +; rdar://5752025 + +; We don't want to fold the and into the test, because the and clobbers its +; input forcing a copy. We want: +; movl $15, %ecx +; andl 4(%esp), %ecx +; testl %ecx, %ecx +; movl $42, %eax +; cmove %ecx, %eax +; ret +; +; Not: +; movl 4(%esp), %eax +; movl %eax, %ecx +; andl $15, %ecx +; testl $15, %eax +; movl $42, %eax +; cmove %ecx, %eax +; ret + +define i32 @t1(i32 %X) nounwind { +entry: + %tmp2 = and i32 %X, 15 ; <i32> [#uses=2] + %tmp4 = icmp eq i32 %tmp2, 0 ; <i1> [#uses=1] + %retval = select i1 %tmp4, i32 %tmp2, i32 42 ; <i32> [#uses=1] + ret i32 %retval +} + |