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