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 -mtriple=i686-- | FileCheck %s 7 8 @GLOBAL = external global i32 9 10 define i32 @test(i32* %P1, i32* %P2, i32* %P3) nounwind { 11 ; CHECK-LABEL: test: 12 entry: 13 %L = load i32, i32* @GLOBAL 14 store i32 12, i32* %P2 15 %Y = load i32, i32* %P3 16 %Z = sub i32 %Y, %L 17 ret i32 %Z 18 ; CHECK-NOT: {{sub.*GLOBAL}} 19 } 20 21
