1 ; RUN: llc < %s -asm-verbose=false | FileCheck %s
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.
6 target datalayout = "e-p:32:32-i64:64-n32:64-S128"
7 target triple = "wasm32-unknown-unknown"
9 ; CHECK-LABEL: single_block:
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) {
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.
24 %class.Vec3 = type { float, float, float }
26 @pos = global %class.Vec3 zeroinitializer, align 4
29 ; CHECK: i32.store $discard=, pos($0), $0{{$}}
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
47 ; CHECK: i32.store $discard=, pos($0), $0{{$}}
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