blob: 3b0daad227e92d2e60f4b125cac1a404cef77b93 [file] [log] [blame]
Dan Gohmanf17a25c2007-07-18 16:29:46 +00001; All of these ands and shifts should be folded into rlwimi's
Tanya Lattner5ebaf3b2008-02-19 08:07:33 +00002; RUN: llvm-as < %s | llc -march=ppc32 -o %t -f
Dan Gohmanf17a25c2007-07-18 16:29:46 +00003; RUN: not grep mulhwu %t
4; RUN: not grep srawi %t
5; RUN: not grep add %t
Dan Gohman8c89a502007-08-15 13:36:28 +00006; RUN: grep mulhw %t | count 1
Dan Gohmanf17a25c2007-07-18 16:29:46 +00007
Tanya Lattner5ebaf3b2008-02-19 08:07:33 +00008define i32 @mulhs(i32 %a, i32 %b) {
Dan Gohmanf17a25c2007-07-18 16:29:46 +00009entry:
Tanya Lattner5ebaf3b2008-02-19 08:07:33 +000010 %tmp.1 = sext i32 %a to i64 ; <i64> [#uses=1]
11 %tmp.3 = sext i32 %b to i64 ; <i64> [#uses=1]
12 %tmp.4 = mul i64 %tmp.3, %tmp.1 ; <i64> [#uses=1]
13 %tmp.6 = lshr i64 %tmp.4, 32 ; <i64> [#uses=1]
14 %tmp.7 = trunc i64 %tmp.6 to i32 ; <i32> [#uses=1]
15 ret i32 %tmp.7
Dan Gohmanf17a25c2007-07-18 16:29:46 +000016}
Tanya Lattner5ebaf3b2008-02-19 08:07:33 +000017