diff options
Diffstat (limited to 'test/CodeGen/ARM/iabs.ll')
-rw-r--r-- | test/CodeGen/ARM/iabs.ll | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/test/CodeGen/ARM/iabs.ll b/test/CodeGen/ARM/iabs.ll index 89e309d..600a8c2 100644 --- a/test/CodeGen/ARM/iabs.ll +++ b/test/CodeGen/ARM/iabs.ll @@ -10,7 +10,25 @@ define i32 @test(i32 %a) { %b = icmp sgt i32 %a, -1 %abs = select i1 %b, i32 %a, i32 %tmp1neg ret i32 %abs -; CHECK: movs r0, r0 +; CHECK: cmp ; CHECK: rsbmi r0, r0, #0 ; CHECK: bx lr } + +; rdar://11633193 +;; 3 instructions will be generated for abs(a-b): +;; subs +;; rsbmi +;; bx +define i32 @test2(i32 %a, i32 %b) nounwind readnone ssp { +entry: +; CHECK: test2 +; CHECK: subs +; CHECK-NEXT: rsbmi +; CHECK-NEXT: bx + %sub = sub nsw i32 %a, %b + %cmp = icmp sgt i32 %sub, -1 + %sub1 = sub nsw i32 0, %sub + %cond = select i1 %cmp, i32 %sub, i32 %sub1 + ret i32 %cond +} |