1 ; REQUIRES: asserts 2 ; RUN: llc < %s -mtriple=i686-unknown-linux -relocation-model=static -stats 2>&1 | \ 3 ; RUN: grep asm-printer | grep 14 4 ; 5 ; It's possible to schedule this in 14 instructions by avoiding 6 ; callee-save registers, but the scheduler isn't currently that 7 ; conervative with registers. 8 @size20 = external global i32 ; <i32*> [#uses=1] 9 @in5 = external global i8* ; <i8**> [#uses=1] 10 11 define i32 @compare(i8* %a, i8* %b) nounwind { 12 %tmp = bitcast i8* %a to i32* ; <i32*> [#uses=1] 13 %tmp1 = bitcast i8* %b to i32* ; <i32*> [#uses=1] 14 %tmp.upgrd.1 = load i32, i32* @size20 ; <i32> [#uses=1] 15 %tmp.upgrd.2 = load i8*, i8** @in5 ; <i8*> [#uses=2] 16 %tmp3 = load i32, i32* %tmp1 ; <i32> [#uses=1] 17 %gep.upgrd.3 = zext i32 %tmp3 to i64 ; <i64> [#uses=1] 18 %tmp4 = getelementptr i8, i8* %tmp.upgrd.2, i64 %gep.upgrd.3 ; <i8*> [#uses=2] 19 %tmp7 = load i32, i32* %tmp ; <i32> [#uses=1] 20 %gep.upgrd.4 = zext i32 %tmp7 to i64 ; <i64> [#uses=1] 21 %tmp8 = getelementptr i8, i8* %tmp.upgrd.2, i64 %gep.upgrd.4 ; <i8*> [#uses=2] 22 %tmp.upgrd.5 = tail call i32 @memcmp( i8* %tmp8, i8* %tmp4, i32 %tmp.upgrd.1 ) ; <i32> [#uses=1] 23 ret i32 %tmp.upgrd.5 24 } 25 26 declare i32 @memcmp(i8*, i8*, i32) 27
