| ; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt | FileCheck %s |
| |
| ; Test that the wasm-store-results pass makes users of stored values use the |
| ; result of store expressions to reduce get_local/set_local traffic. |
| |
| target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" |
| target triple = "wasm32-unknown-unknown" |
| |
| ; CHECK-LABEL: single_block: |
| ; CHECK-NOT: local |
| ; CHECK: i32.const $push{{[0-9]+}}=, 0{{$}} |
| ; CHECK: i32.store $push[[STORE:[0-9]+]]=, 0($0), $pop{{[0-9]+}}{{$}} |
| ; CHECK: return $pop[[STORE]]{{$}} |
| define i32 @single_block(i32* %p) { |
| entry: |
| store i32 0, i32* %p |
| ret i32 0 |
| } |
| |
| ; Test interesting corner cases for wasm-store-results, in which the operand of |
| ; a store ends up getting used by a phi, which needs special handling in the |
| ; dominance test, since phis use their operands on their incoming edges. |
| |
| %class.Vec3 = type { float, float, float } |
| |
| @pos = global %class.Vec3 zeroinitializer, align 4 |
| |
| ; CHECK-LABEL: foo: |
| ; CHECK: i32.store $drop=, pos($pop{{[0-9]+}}), $pop{{[0-9]+}}{{$}} |
| define void @foo() { |
| for.body.i: |
| br label %for.body5.i |
| |
| for.body5.i: |
| %i.0168.i = phi i32 [ 0, %for.body.i ], [ %inc.i, %for.body5.i ] |
| %conv6.i = sitofp i32 %i.0168.i to float |
| store volatile float 0.0, float* getelementptr inbounds (%class.Vec3, %class.Vec3* @pos, i32 0, i32 0) |
| %inc.i = add nuw nsw i32 %i.0168.i, 1 |
| %exitcond.i = icmp eq i32 %inc.i, 256 |
| br i1 %exitcond.i, label %for.cond.cleanup4.i, label %for.body5.i |
| |
| for.cond.cleanup4.i: |
| ret void |
| } |
| |
| ; CHECK-LABEL: bar: |
| ; CHECK: i32.store $drop=, pos($pop{{[0-9]+}}), $pop{{[0-9]+}}{{$}} |
| define void @bar() { |
| for.body.i: |
| br label %for.body5.i |
| |
| for.body5.i: |
| %i.0168.i = phi float [ 0.0, %for.body.i ], [ %inc.i, %for.body5.i ] |
| store volatile float 0.0, float* getelementptr inbounds (%class.Vec3, %class.Vec3* @pos, i32 0, i32 0) |
| %inc.i = fadd float %i.0168.i, 1.0 |
| %exitcond.i = fcmp oeq float %inc.i, 256.0 |
| br i1 %exitcond.i, label %for.cond.cleanup4.i, label %for.body5.i |
| |
| for.cond.cleanup4.i: |
| ret void |
| } |
| |
| ; CHECK-LABEL: fi_ret: |
| ; CHECK: i32.store $push0=, |
| ; CHECK: return $pop0{{$}} |
| define hidden i8* @fi_ret(i8** %addr) { |
| entry: |
| %buf = alloca [27 x i8], align 16 |
| %0 = getelementptr inbounds [27 x i8], [27 x i8]* %buf, i32 0, i32 0 |
| store i8* %0, i8** %addr |
| ret i8* %0 |
| } |