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https://github.com/RPCS3/llvm-mirror.git
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fb437bc669
Teach the register stackifier to rematerialize constants that have multiple uses instead of leaving them in registers. In the WebAssembly encoding, it's the same code size to materialize most constants as it is to read a value from a register. llvm-svn: 258142
71 lines
2.2 KiB
LLVM
71 lines
2.2 KiB
LLVM
; RUN: llc < %s -asm-verbose=false | FileCheck %s
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; Test that i1 extending loads and truncating stores are assembled properly.
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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: load_u_i1_i32:
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; CHECK: i32.load8_u $push[[NUM0:[0-9]+]]=, 0($0){{$}}
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; CHECK-NEXT: return $pop[[NUM0]]{{$}}
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define i32 @load_u_i1_i32(i1* %p) {
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%v = load i1, i1* %p
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%e = zext i1 %v to i32
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ret i32 %e
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}
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; CHECK-LABEL: load_s_i1_i32:
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; CHECK: i32.load8_u $push[[NUM0:[0-9]+]]=, 0($0){{$}}
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; CHECK-NEXT: i32.const $push[[NUM1:[0-9]+]]=, 31{{$}}
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; CHECK-NEXT: shl $push[[NUM2:[0-9]+]]=, $pop[[NUM0]], $pop[[NUM1]]{{$}}
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; CHECK-NEXT: i32.const $push[[NUM4:[0-9]+]]=, 31{{$}}
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; CHECK-NEXT: shr_s $push[[NUM3:[0-9]+]]=, $pop[[NUM2]], $pop[[NUM4]]{{$}}
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; CHECK-NEXT: return $pop[[NUM3]]{{$}}
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define i32 @load_s_i1_i32(i1* %p) {
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%v = load i1, i1* %p
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%e = sext i1 %v to i32
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ret i32 %e
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}
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; CHECK-LABEL: load_u_i1_i64:
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; CHECK: i64.load8_u $push[[NUM0:[0-9]+]]=, 0($0){{$}}
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; CHECK-NEXT: return $pop[[NUM0]]{{$}}
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define i64 @load_u_i1_i64(i1* %p) {
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%v = load i1, i1* %p
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%e = zext i1 %v to i64
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ret i64 %e
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}
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; CHECK-LABEL: load_s_i1_i64:
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; CHECK: i64.load8_u $push[[NUM0:[0-9]+]]=, 0($0){{$}}
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; CHECK-NEXT: i64.const $push[[NUM1:[0-9]+]]=, 63{{$}}
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; CHECK-NEXT: shl $push[[NUM2:[0-9]+]]=, $pop[[NUM0]], $pop[[NUM1]]{{$}}
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; CHECK-NEXT: i64.const $push[[NUM4:[0-9]+]]=, 63{{$}}
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; CHECK-NEXT: shr_s $push[[NUM3:[0-9]+]]=, $pop[[NUM2]], $pop[[NUM4]]{{$}}
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; CHECK-NEXT: return $pop[[NUM3]]{{$}}
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define i64 @load_s_i1_i64(i1* %p) {
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%v = load i1, i1* %p
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%e = sext i1 %v to i64
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ret i64 %e
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}
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; CHECK-LABEL: store_i32_i1:
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; CHECK: i32.const $push[[NUM0:[0-9]+]]=, 1{{$}}
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; CHECK-NEXT: i32.and $push[[NUM1:[0-9]+]]=, $1, $pop[[NUM0]]{{$}}
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; CHECK-NEXT: i32.store8 $discard=, 0($0), $pop[[NUM1]]{{$}}
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define void @store_i32_i1(i1* %p, i32 %v) {
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%t = trunc i32 %v to i1
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store i1 %t, i1* %p
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ret void
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}
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; CHECK-LABEL: store_i64_i1:
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; CHECK: i64.const $push[[NUM0:[0-9]+]]=, 1{{$}}
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; CHECK-NEXT: i64.and $push[[NUM1:[0-9]+]]=, $1, $pop[[NUM0]]{{$}}
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; CHECK-NEXT: i64.store8 $discard=, 0($0), $pop[[NUM1]]{{$}}
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define void @store_i64_i1(i1* %p, i64 %v) {
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%t = trunc i64 %v to i1
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store i1 %t, i1* %p
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ret void
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}
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