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[WebAssembly] Disable custom NaN payload tests

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Summary:
These tests fail on 32-bit builds because NaN payload bits in floating point
immediates are not necessarily preserved through compilation. This is because
the MC layer uses native doubles to store these values. The tests will be
reenabled once this problem has been fixed or deleted if we decide we don't care
about lowering payload bits.

Reviewers: aheejin, dschuff

Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D54353

llvm-svn: 346558
This commit is contained in:
Thomas Lively 2018-11-09 22:04:37 +00:00
parent 61f669b57b
commit 565db5808e
1 changed files with 18 additions and 14 deletions
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32
test/CodeGen/WebAssembly/immediates.ll
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@ -216,18 +216,22 @@ define double @neginf_f64() {
ret double 0xFFF0000000000000
}
; CHECK-LABEL: custom_nan_f64:
; CHECK-NEXT: .result f64{{$}}
; CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, -nan:0xabcdef0123456{{$}}
; CHECK-NEXT: return $pop[[NUM]]{{$}}
define double @custom_nan_f64() {
ret double 0xFFFABCDEF0123456
}
;; Custom NaN playloads are currently not always preserved because of the use of
;; native doubles in the MC layer. TODO: fix this problem or decide we don't
;; care about preserving NaN payloads.
; CHECK-LABEL: custom_nans_f64:
; CHECK-NEXT: .result f64{{$}}
; CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, -nan:0x2bcdef0123456{{$}}
; CHECK-NEXT: return $pop[[NUM]]{{$}}
define double @custom_nans_f64() {
ret double 0xFFF2BCDEF0123456
}
; XXX-CHECK-LABEL: custom_nan_f64:
; XXX-CHECK-NEXT: .result f64{{$}}
; XXX-CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, -nan:0xabcdef0123456{{$}}
; XXX-CHECK-NEXT: return $pop[[NUM]]{{$}}
; define double @custom_nan_f64() {
; ret double 0xFFFABCDEF0123456
; }
; XXX-CHECK-LABEL: custom_nans_f64:
; XXX-CHECK-NEXT: .result f64{{$}}
; XXX-CHECK-NEXT: f64.const $push[[NUM:[0-9]+]]=, -nan:0x2bcdef0123456{{$}}
; XXX-CHECK-NEXT: return $pop[[NUM]]{{$}}
; define double @custom_nans_f64() {
; ret double 0xFFF2BCDEF0123456
; }