| ; RUN: llc < %s -march=x86 | \ |
| ; RUN: grep shld | count 1 |
| ; |
| ; Check that the isel does not fold the shld, which already folds a load |
| ; and has two uses, into a store. |
| |
| @A = external global i32 ; <i32*> [#uses=2] |
| |
| define i32 @test5(i32 %B, i8 %C) { |
| %tmp.1 = load i32* @A ; <i32> [#uses=1] |
| %shift.upgrd.1 = zext i8 %C to i32 ; <i32> [#uses=1] |
| %tmp.2 = shl i32 %tmp.1, %shift.upgrd.1 ; <i32> [#uses=1] |
| %tmp.3 = sub i8 32, %C ; <i8> [#uses=1] |
| %shift.upgrd.2 = zext i8 %tmp.3 to i32 ; <i32> [#uses=1] |
| %tmp.4 = lshr i32 %B, %shift.upgrd.2 ; <i32> [#uses=1] |
| %tmp.5 = or i32 %tmp.4, %tmp.2 ; <i32> [#uses=2] |
| store i32 %tmp.5, i32* @A |
| ret i32 %tmp.5 |
| } |
| |
