1 ; This testcase was distilled from 132.ijpeg. Bsaically we cannot fold the 2 ; load into the sub instruction here as it induces a cycle in the dag, which 3 ; is invalid code (there is no correct way to order the instruction). Check 4 ; that we do not fold the load into the sub. 5 6 ; RUN: llc < %s -march=x86 | not grep sub.*GLOBAL 7 8 @GLOBAL = external global i32 ; <i32*> [#uses=1] 9 10 define i32 @test(i32* %P1, i32* %P2, i32* %P3) nounwind { 11 %L = load i32, i32* @GLOBAL ; <i32> [#uses=1] 12 store i32 12, i32* %P2 13 %Y = load i32, i32* %P3 ; <i32> [#uses=1] 14 %Z = sub i32 %Y, %L ; <i32> [#uses=1] 15 ret i32 %Z 16 } 17 18
