Changes in directory llvm/test/CodeGen/X86:
iabs.ll added (r1.1)
---
Log message:
new testcases for integer abs function
---
Diffs of the changes: (+16 -0)
iabs.ll | 16 ++++++++++++++++
1 files changed, 16 insertions(+)
Index: llvm/test/CodeGen/X86/iabs.ll
diff -c /dev/null llvm/test/CodeGen/X86/iabs.ll:1.1
*** /dev/null Wed Apr 11 00:03:07 2007
--- llvm/test/CodeGen/X86/iabs.ll Wed Apr 11 00:02:57 2007
***************
*** 0 ****
--- 1,16 ----
+ ; RUN: llvm-as < %s | llc -march=x86-64 -stats 2>&1 | grep '6 .*Number of
machine instrs printed'
+
+ ;; Integer absolute value, should produce something at least as good as:
+ ;; movl %edi, %eax
+ ;; sarl $31, %eax
+ ;; addl %eax, %edi
+ ;; xorl %eax, %edi
+ ;; movl %edi, %eax
+ ;; ret
+ define i32 @test(i32 %a) {
+ %tmp1neg = sub i32 0, %a
+ %b = icmp sgt i32 %a, -1
+ %abs = select i1 %b, i32 %a, i32 %tmp1neg
+ ret i32 %abs
+ }
+
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