| ; REQUIRES: asserts |
| ; RUN: llc < %s -mtriple=i686-unknown-linux -relocation-model=static -stats 2>&1 | \ |
| ; RUN: grep asm-printer | grep 14 |
| ; |
| ; It's possible to schedule this in 14 instructions by avoiding |
| ; callee-save registers, but the scheduler isn't currently that |
| ; conervative with registers. |
| @size20 = external dso_local global i32 ; <ptr> [#uses=1] |
| @in5 = external dso_local global ptr ; <ptr> [#uses=1] |
| |
| define i32 @compare(ptr %a, ptr %b) nounwind { |
| %tmp.upgrd.1 = load i32, ptr @size20 ; <i32> [#uses=1] |
| %tmp.upgrd.2 = load ptr, ptr @in5 ; <ptr> [#uses=2] |
| %tmp3 = load i32, ptr %b ; <i32> [#uses=1] |
| %gep.upgrd.3 = zext i32 %tmp3 to i64 ; <i64> [#uses=1] |
| %tmp4 = getelementptr i8, ptr %tmp.upgrd.2, i64 %gep.upgrd.3 ; <ptr> [#uses=2] |
| %tmp7 = load i32, ptr %a ; <i32> [#uses=1] |
| %gep.upgrd.4 = zext i32 %tmp7 to i64 ; <i64> [#uses=1] |
| %tmp8 = getelementptr i8, ptr %tmp.upgrd.2, i64 %gep.upgrd.4 ; <ptr> [#uses=2] |
| %tmp.upgrd.5 = tail call i32 @memcmp( ptr %tmp8, ptr %tmp4, i32 %tmp.upgrd.1 ) ; <i32> [#uses=1] |
| ret i32 %tmp.upgrd.5 |
| } |
| |
| declare i32 @memcmp(ptr, ptr, i32) |
