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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
63 lines
2.2 KiB
LLVM
63 lines
2.2 KiB
LLVM
; RUN: llc < %s -asm-verbose=false | FileCheck %s
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; Test zeroext and signext ABI keywords
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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: z2s_func:
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; CHECK-NEXT: .param i32{{$}}
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; CHECK-NEXT: .result i32{{$}}
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; CHECK-NEXT: i32.const $push[[NUM0:[0-9]+]]=, 24{{$}}
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; CHECK-NEXT: i32.shl $push[[NUM2:[0-9]+]]=, $0, $pop[[NUM0]]{{$}}
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; CHECK-NEXT: i32.const $push[[NUM1:[0-9]+]]=, 24{{$}}
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; CHECK-NEXT: i32.shr_s $push[[NUM3:[0-9]+]]=, $pop[[NUM2]], $pop[[NUM1]]{{$}}
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; CHECK-NEXT: return $pop[[NUM3]]{{$}}
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define signext i8 @z2s_func(i8 zeroext %t) {
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ret i8 %t
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}
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; CHECK-LABEL: s2z_func:
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; CHECK-NEXT: .param i32{{$}}
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; CHECK-NEXT: .result i32{{$}}
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; CHECK-NEXT: i32.const $push[[NUM0:[0-9]+]]=, 255{{$}}
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; CHECK-NEXT: i32.and $push[[NUM1:[0-9]+]]=, $0, $pop[[NUM0]]{{$}}
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; CHECK-NEXT: return $pop[[NUM1]]{{$}}
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define zeroext i8 @s2z_func(i8 signext %t) {
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ret i8 %t
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}
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; CHECK-LABEL: z2s_call:
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; CHECK-NEXT: .param i32{{$}}
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; CHECK-NEXT: .result i32{{$}}
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; CHECK-NEXT: i32.const $push[[NUM0:[0-9]+]]=, 255{{$}}
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; CHECK-NEXT: i32.and $push[[NUM1:[0-9]+]]=, $0, $pop[[NUM0]]{{$}}
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; CHECK-NEXT: call $push[[NUM2:[0-9]+]]=, z2s_func@FUNCTION, $pop[[NUM1]]{{$}}
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; CHECK-NEXT: return $pop[[NUM2]]{{$}}
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define i32 @z2s_call(i32 %t) {
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%s = trunc i32 %t to i8
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%u = call signext i8 @z2s_func(i8 zeroext %s)
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%v = sext i8 %u to i32
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ret i32 %v
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}
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; CHECK-LABEL: s2z_call:
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; CHECK-NEXT: .param i32{{$}}
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; CHECK-NEXT: .result i32{{$}}
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; CHECK-NEXT: i32.const $push[[NUM0:[0-9]+]]=, 24{{$}}
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; CHECK-NEXT: i32.shl $push[[NUM1:[0-9]+]]=, $0, $pop[[NUM0]]{{$}}
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; CHECK-NEXT: i32.const $push[[NUM6:[0-9]+]]=, 24{{$}}
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; CHECK-NEXT: i32.shr_s $push[[NUM2:[0-9]+]]=, $pop[[NUM1]], $pop[[NUM6]]{{$}}
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; CHECK-NEXT: call $push[[NUM3:[0-9]]]=, s2z_func@FUNCTION, $pop[[NUM2]]{{$}}
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; CHECK-NEXT: i32.const $push[[NUM7:[0-9]+]]=, 24{{$}}
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; CHECK-NEXT: i32.shl $push[[NUM4:[0-9]+]]=, $pop[[NUM3]], $pop[[NUM7]]{{$}}
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; CHECK-NEXT: i32.const $push[[NUM8:[0-9]+]]=, 24{{$}}
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; CHECK-NEXT: i32.shr_s $push[[NUM5:[0-9]+]]=, $pop[[NUM4]], $pop[[NUM8]]{{$}}
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; CHECK-NEXT: return $pop[[NUM5]]{{$}}
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define i32 @s2z_call(i32 %t) {
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%s = trunc i32 %t to i8
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%u = call zeroext i8 @s2z_func(i8 signext %s)
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%v = sext i8 %u to i32
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ret i32 %v
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}
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