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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
65 lines
1.3 KiB
LLVM
65 lines
1.3 KiB
LLVM
; RUN: llc < %s -asm-verbose=false | FileCheck %s
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; Test that basic functions assemble as expected.
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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: f0:
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; CHECK: return{{$}}
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; CHECK: .endfunc{{$}}
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; CHECK: .size f0,
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define void @f0() {
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ret void
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}
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; CHECK-LABEL: f1:
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; CHECK-NEXT: .result i32{{$}}
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; CHECK-NEXT: i32.const $push[[NUM:[0-9]+]]=, 0{{$}}
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; CHECK-NEXT: return $pop[[NUM]]{{$}}
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; CHECK: .size f1,
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define i32 @f1() {
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ret i32 0
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}
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; CHECK-LABEL: f2:
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; CHECK-NEXT: .param i32, f32{{$}}
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; CHECK-NEXT: .result i32{{$}}
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; CHECK-NEXT: i32.const $push[[NUM:[0-9]+]]=, 0{{$}}
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; CHECK-NEXT: return $pop[[NUM]]{{$}}
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; CHECK: .size f2,
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define i32 @f2(i32 %p1, float %p2) {
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ret i32 0
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}
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; CHECK-LABEL: f3:
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; CHECK-NEXT: .param i32, f32{{$}}
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; CHECK-NOT: local
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; CHECK-NEXT: return{{$}}
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; CHECK: .size f3,
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define void @f3(i32 %p1, float %p2) {
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ret void
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}
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; CHECK-LABEL: f4:
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; CHECK-NEXT: .param i32{{$}}
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; CHECK-NEXT: .result i32{{$}}
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; CHECK-NOT: local
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; CHECK: .size f4,
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define i32 @f4(i32 %x) {
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entry:
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%c = trunc i32 %x to i1
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br i1 %c, label %true, label %false
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true:
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ret i32 0
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false:
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ret i32 1
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}
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; CHECK-LABEL: f5:
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; CHECK-NEXT: .result f32{{$}}
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; CHECK-NEXT: unreachable
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define float @f5() {
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unreachable
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}
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