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llvm-mirror/test/CodeGen/WebAssembly/copysign-casts.ll
Dan Gohman d6675baf7a [WebAssembly] Basic support for Wasm object file encoding.
With the "wasm32-unknown-unknown-wasm" triple, this allows writing out
simple wasm object files, and is another step in a larger series toward
migrating from ELF to general wasm object support. Note that this code
and the binary format itself is still experimental.

llvm-svn: 296190
2017-02-24 23:18:00 +00:00

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954 B
LLVM

; RUN: llc < %s -asm-verbose=false | FileCheck %s
; DAGCombiner oddly folds casts into the rhs of copysign. Test that they get
; unfolded.
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown-wasm"
declare double @copysign(double, double) nounwind readnone
declare float @copysignf(float, float) nounwind readnone
; CHECK-LABEL: fold_promote:
; CHECK: f64.promote/f32 $push0=, $pop{{[0-9]+}}{{$}}
; CHECK: f64.copysign $push1=, $pop{{[0-9]+}}, $pop0{{$}}
define double @fold_promote(double %a, float %b) {
%c = fpext float %b to double
%t = call double @copysign(double %a, double %c)
ret double %t
}
; CHECK-LABEL: fold_demote:{{$}}
; CHECK: f32.demote/f64 $push0=, $pop{{[0-9]+}}{{$}}
; CHECK: f32.copysign $push1=, $pop{{[0-9]+}}, $pop0{{$}}
define float @fold_demote(float %a, double %b) {
%c = fptrunc double %b to float
%t = call float @copysignf(float %a, float %c)
ret float %t
}