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| author | Sanjay Patel <spatel@rotateright.com> | 2019-02-09 16:41:20 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2019-02-09 16:41:20 +0000 |
| commit | f31cf49c587ec1d72c9b93a80bd085640b4d50ca (patch) | |
| tree | 7de59197325715c60e084e91d7ead11fd718b0d2 | |
| parent | 9419b5bd04f84d565776fe8ad4b8750e4c1266c1 (diff) | |
| download | bcm5719-llvm-f31cf49c587ec1d72c9b93a80bd085640b4d50ca.tar.gz bcm5719-llvm-f31cf49c587ec1d72c9b93a80bd085640b4d50ca.zip | |
[x86] add test for setcc sub->shift transform; NFC
llvm-svn: 353618
| -rw-r--r-- | llvm/test/CodeGen/X86/setcc-combine.ll | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/setcc-combine.ll b/llvm/test/CodeGen/X86/setcc-combine.ll index 749d99bcaff..c13d2f114cf 100644 --- a/llvm/test/CodeGen/X86/setcc-combine.ll +++ b/llvm/test/CodeGen/X86/setcc-combine.ll @@ -283,3 +283,17 @@ define i64 @PR40657(i8 %var2, i8 %var9) { ret i64 %res.cast } +define i64 @sub_to_shift_to_add(i32 %x, i32 %y, i64 %s1, i64 %s2) { +; CHECK-LABEL: sub_to_shift_to_add: +; CHECK: # %bb.0: +; CHECK-NEXT: movq %rdx, %rax +; CHECK-NEXT: addl %esi, %esi +; CHECK-NEXT: cmpl %esi, %edi +; CHECK-NEXT: cmovneq %rcx, %rax +; CHECK-NEXT: retq + %sub = sub i32 %x, %y + %cmp = icmp eq i32 %sub, %y + %r = select i1 %cmp, i64 %s1, i64 %s2 + ret i64 %r +} + |
