1 ; RUN: llc < %s -asm-verbose=false | FileCheck %s 2 3 ; Test that the wasm-store-results pass makes users of stored values use the 4 ; result of store expressions to reduce get_local/set_local traffic. 5 6 target datalayout = "e-p:32:32-i64:64-n32:64-S128" 7 target triple = "wasm32-unknown-unknown" 8 9 ; CHECK-LABEL: single_block: 10 ; CHECK-NOT: .local 11 ; CHECK: i32.const $push{{[0-9]+}}=, 0{{$}} 12 ; CHECK: i32.store $push[[STORE:[0-9]+]]=, 0($0), $pop{{[0-9]+}}{{$}} 13 ; CHECK: return $pop[[STORE]]{{$}} 14 define i32 @single_block(i32* %p) { 15 entry: 16 store i32 0, i32* %p 17 ret i32 0 18 } 19 20 ; Test interesting corner cases for wasm-store-results, in which the operand of 21 ; a store ends up getting used by a phi, which needs special handling in the 22 ; dominance test, since phis use their operands on their incoming edges. 23 24 %class.Vec3 = type { float, float, float } 25 26 @pos = global %class.Vec3 zeroinitializer, align 4 27 28 ; CHECK-LABEL: foo: 29 ; CHECK: i32.store $discard=, pos($0), $0{{$}} 30 define void @foo() { 31 for.body.i: 32 br label %for.body5.i 33 34 for.body5.i: 35 %i.0168.i = phi i32 [ 0, %for.body.i ], [ %inc.i, %for.body5.i ] 36 %conv6.i = sitofp i32 %i.0168.i to float 37 store volatile float 0.0, float* getelementptr inbounds (%class.Vec3, %class.Vec3* @pos, i32 0, i32 0) 38 %inc.i = add nuw nsw i32 %i.0168.i, 1 39 %exitcond.i = icmp eq i32 %inc.i, 256 40 br i1 %exitcond.i, label %for.cond.cleanup4.i, label %for.body5.i 41 42 for.cond.cleanup4.i: 43 ret void 44 } 45 46 ; CHECK-LABEL: bar: 47 ; CHECK: i32.store $discard=, pos($0), $0{{$}} 48 define void @bar() { 49 for.body.i: 50 br label %for.body5.i 51 52 for.body5.i: 53 %i.0168.i = phi float [ 0.0, %for.body.i ], [ %inc.i, %for.body5.i ] 54 store volatile float 0.0, float* getelementptr inbounds (%class.Vec3, %class.Vec3* @pos, i32 0, i32 0) 55 %inc.i = fadd float %i.0168.i, 1.0 56 %exitcond.i = fcmp oeq float %inc.i, 256.0 57 br i1 %exitcond.i, label %for.cond.cleanup4.i, label %for.body5.i 58 59 for.cond.cleanup4.i: 60 ret void 61 } 62
